subject:(cooperative breeding)

Cornell University

1. Niemasik, Esther Leah. Cooperative Breeding helps Brown-headed nuthatches (Sitta pusilla) face heterospecific competition.

Degree: PhD, Neurobiology and Behavior, 2019, Cornell University

URL: http://hdl.handle.net/1813/67547

► My dissertation research tests the previously untested idea that heterospecific competition functions as an important selective force on group size in cooperatively breeding birds, using… (more)

▼ My dissertation research tests the previously untested idea that heterospecific competition functions as an important selective force on group size in cooperatively breeding birds, using experimental approaches with the Brown-headed nuthatch (BHNU) (Sitta pusilla). We know from prior work that the western bluebird, which is much larger, excludes nuthatches from nesting sites (Stanback 2011). I tested the following explicit hypotheses: Hypothesis 1: Inter-specific competition selects for increased group size (more individuals helping or co-breeding) in BHNU and may even be sufficient to select for helping. Hypothesis 2: BHNU groups collectively defend against nest competitors, and collectively monitor their nest sites to chase away intruders. I studied the effect of interspecific competition on the fitness consequences of cooperative breeding using an experimental design that involved creating high and low competition sites on golf courses. Half of each course was randomly assigned to the high and low heterospecific competition treatments; high competition territories had a single nest box whereas low competition territories had a pair of identical boxes within 5 m of each other at each box location. If competition acts as a selective force, reproductive success should be lower under high competition. And this is indeed what I found. GLMMs and AICc model selection criteria helped determine the model that best fit the data. The most highly supported model included both competition pressure and group size (ΔAICc >2), strongly supporting hypothesis 1. More BHNU nests failed on high competition sites (N=156, GLMM, course as fixed factor, p=0.043). Larger groups more often fledged young regardless of competition pressure, but small groups were significantly less likely to fledge young in the high than low competition treatment and this higher failure rate was due to competition. I examined the behavior of BHNUs facing competitors using simulated territorial intrusions and nest watches. Larger groups were less likely to have intruders investigate their nest site without their knowledge and retaliation (GLMM, box as fixed factor, n=202, p=0.044). Furthermore, it took large groups less time to chase intruders from their territories. The mechanisms through which helpers increase breeder success in the face of heterospecific competition are twofold, first, they provide more noise and mobbing effort, and secondly they provide more eyes on the nest site, such that competitors are spotted more quickly. Cooperative breeding rescues BHNUs from the omnipresent pressure of competitors and provides a hitherto unconsidered benefit of breeding in groups. Advisors/Committee Members: Dickinson, Janis Lou (chair), Reeve, Hudson Kern (committee member), Seeley, Thomas Dyer (committee member), Koenig, Walter D. (committee member).

Subjects/Keywords: Cooperative breeding; competition; Behavioral sciences; nuthatch; Ecology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Niemasik, E. L. (2019). Cooperative Breeding helps Brown-headed nuthatches (Sitta pusilla) face heterospecific competition. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/67547

Chicago Manual of Style (16^th Edition):

Niemasik, Esther Leah. “Cooperative Breeding helps Brown-headed nuthatches (Sitta pusilla) face heterospecific competition.” 2019. Doctoral Dissertation, Cornell University. Accessed March 07, 2021. http://hdl.handle.net/1813/67547.

MLA Handbook (7^th Edition):

Niemasik, Esther Leah. “Cooperative Breeding helps Brown-headed nuthatches (Sitta pusilla) face heterospecific competition.” 2019. Web. 07 Mar 2021.

Vancouver:

Niemasik EL. Cooperative Breeding helps Brown-headed nuthatches (Sitta pusilla) face heterospecific competition. [Internet] [Doctoral dissertation]. Cornell University; 2019. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1813/67547.

Council of Science Editors:

Niemasik EL. Cooperative Breeding helps Brown-headed nuthatches (Sitta pusilla) face heterospecific competition. [Doctoral Dissertation]. Cornell University; 2019. Available from: http://hdl.handle.net/1813/67547

University of Exeter

2. Creasey, Matthew John Stanley. Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps.

Degree: PhD, 2018, University of Exeter

URL: http://hdl.handle.net/10871/33703

► Although group-living is widespread in animals, the degree of social complexity varies markedly within and among taxa. One important precondition for the evolution of higher… (more)

▼ Although group-living is widespread in animals, the degree of social complexity varies markedly within and among taxa. One important precondition for the evolution of higher forms of social complexity is increasing group size. However, this imposes a challenge: finding sufficient food for growing numbers of individuals. One hypothesis is that the (in)ability to avoid resource competition as group size increases, could partly explain variation in social complexity among vertebrates. Increasingly, evidence suggests that resource competition can be reduced via three forms of individual specialisation. These are foraging niche specialisation, specialisation to a role under division of labour (DoL), and as a mediator of these two, personality variation. Yet few studies have directly investigated the role of these specialisations in mediating the costs of increasing group size in social vertebrates. In this thesis, I first review the evidence to date that specialising to a foraging niche, and/or to a task under DoL, is (1) mediated via personality variation and (2) can be a means of reducing competition, generated by increasing group size, in social species (Chapter 2). Then, using the cooperative breeding chestnut-crowned babbler (Pomatostomus ruficeps) as my model system, I empirically test some of the hypotheses posed in this review, regarding foraging niche specialisation and associations with personality variation. In Chapter 3, I show that babblers do show personality variation in traits likely to facilitate niche segregation, and in Chapter 4 that variation among individuals within groups is sufficient to lead to intragroup niche specialisation. However, I find that the level of variation within groups is not associated with group size. Then in Chapter 5, I show that in a direct measure of foraging niche, there is only limited evidence for intragroup specialisation, and again that any specialisation is not associated with larger group sizes. I therefore find no evidence that niche specialisation is a means through which babblers can overcome the costs of increasing group size. I discuss the implications of these results for the rise of social complexity in this system, and social vertebrates generally.

Subjects/Keywords: 500; Personality variation; cooperative breeding; social complexity

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Creasey, M. J. S. (2018). Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/33703

Chicago Manual of Style (16^th Edition):

Creasey, Matthew John Stanley. “Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps.” 2018. Doctoral Dissertation, University of Exeter. Accessed March 07, 2021. http://hdl.handle.net/10871/33703.

MLA Handbook (7^th Edition):

Creasey, Matthew John Stanley. “Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps.” 2018. Web. 07 Mar 2021.

Vancouver:

Creasey MJS. Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps. [Internet] [Doctoral dissertation]. University of Exeter; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10871/33703.

Council of Science Editors:

Creasey MJS. Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps. [Doctoral Dissertation]. University of Exeter; 2018. Available from: http://hdl.handle.net/10871/33703

University of Cambridge

3. Vullioud, Philippe. Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis).

Degree: PhD, 2018, University of Cambridge

URL: https://doi.org/10.17863/CAM.18105 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744470

► Large individual differences in cooperative contributions are common within animal societies such as cooperative breeders, where helpers care for offspring which are not their own.… (more)

▼ Large individual differences in cooperative contributions are common within animal societies such as cooperative breeders, where helpers care for offspring which are not their own. Understanding this variation has been a major focus in behavioural ecology and while evidence has shown that individuals are capable to adaptively adjust their cooperative behaviours, the physiological mechanisms underlying such adjustments remain poorly understood. Steroid hormones are prominent candidates to regulate cooperative behaviours due to their ability to integrate internal physiological state and environmental stimuli to produce an adaptive behavioural response. In this thesis, I investigate the effects of two steroid hormones, Cortisol (CORT) and Testosterone (T), in the regulation of cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). Because these hormones are susceptible to both modulate and be modulated by cooperative contributions, I experimentally tested both sides of this relationship. I show that, despite the absence of correlation between CORT and T and cooperative contributions, experimental increases of cooperative contributions elevate CORT levels, but not T (Chapter 3). Additionally, experimental increases of CORT levels in female helpers raised their cooperative contributions by more than one half demonstrating the regulatory effect of CORT on cooperative behaviours (Chapter 4). As breeding opportunities are likely to affect cooperative contributions and because T is a likely candidate to mediate a trade-off between future reproduction and current cooperation, I tested the effects of experimental increases of T levels in female helpers. I show that such elevations have no measurable effect of aggression, dispersal tendencies (both important to attain a breeding position) or cooperative contributions (Chapter 5). Taken together, the results of this thesis demonstrate that CORT can both respond to and regulate cooperative behaviours and suggest that this hormone may play a major role in the adaptive regulation of cooperative behaviour.

Subjects/Keywords: 591.5; Hormones; Cooperation; Mole-rat; Cooperative breeding

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vullioud, P. (2018). Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.18105 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744470

Chicago Manual of Style (16^th Edition):

Vullioud, Philippe. “Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis).” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 07, 2021. https://doi.org/10.17863/CAM.18105 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744470.

MLA Handbook (7^th Edition):

Vullioud, Philippe. “Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis).” 2018. Web. 07 Mar 2021.

Vancouver:

Vullioud P. Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 07]. Available from: https://doi.org/10.17863/CAM.18105 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744470.

Council of Science Editors:

Vullioud P. Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://doi.org/10.17863/CAM.18105 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744470

McMaster University

4. Young, Courtney A. Patterns of parental care and chick recognition in a joint-nesting rail, Pūkeko (Porphyrio melanotus melanotus).

Degree: MSc, 2017, McMaster University

URL: http://hdl.handle.net/11375/22254

►

Group living is a widespread social system among animals. Within these groups, decisions on interactions between individuals can be facilitated through knowledge about individual identity… (more)

▼

Group living is a widespread social system among animals. Within these groups, decisions on interactions between individuals can be facilitated through knowledge about individual identity and kinship. Individual identity allows for the recognition of individuals from past interactions and thus, information on likelihood of reciprocity and group-membership can be gained. The benefit for cooperative interactions, specifically, increases with the level of relatedness between the helper and the recipient. Thus, knowing who is kin, is an essential ability among group-living species and remembering individual identity helps to maintain long-term relationships and inform future decisions. Kin recognition can be facilitated through temporal and spatial overlap (i.e. familiarity) or through phenotypic-templates (i.e. phenotype matching). The goal of this thesis was to explore recognition in the joint-nesting pūkeko (Porphyrio melanotus melanotus). For the first portion of this thesis (Chapter II), I tested for evidence of phenotype matching in pūkeko using a cross-fostering experiment. Comparing survival and growth between fostered and non-fostered offspring, I provide evidence that pūkeko do not use phenotype matching as their mechanism for kin recognition. In Chapter III, I show that pūkeko chick distress calls may have an individual and group signature. I found variation in the vocal parameters between individual chicks and social groups. I also tested for response of adults towards chick distress calls of their own group. Using a playback-choice experiment, I report a biased response of adult pūkeko towards the distress call of their own group's chicks rather than the call of a distressed chick from a foreign chick.

Thesis

Master of Science (MSc)

Kin recognition is an essential ability for social species. Knowing whom is kin can help inform decisions on cooperation and conflict. I explored whether the joint-nesting pūkeko use familiarity or phenotype matching to recognise cross-fostered offspring. I experimented to determine if adult pūkeko can recognise the distress vocalizations of chicks in their group. I found no evidence that pūkeko use phenotypic templates to recognise cross-fostered chicks as non-kin. However, adult pūkeko showed a bias in response towards the distress calls of their own versus unfamiliar chicks. Individual chick distress calls, while variable from day-to-day, show group-specific similarities.

Advisors/Committee Members: Quinn, James S, Biology.

Subjects/Keywords: cooperative breeding; joint nesting; pukeko; bird behaviour; animal behaviour; kin recognition

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Young, C. A. (2017). Patterns of parental care and chick recognition in a joint-nesting rail, Pūkeko (Porphyrio melanotus melanotus). (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/22254

Chicago Manual of Style (16^th Edition):

Young, Courtney A. “Patterns of parental care and chick recognition in a joint-nesting rail, Pūkeko (Porphyrio melanotus melanotus).” 2017. Masters Thesis, McMaster University. Accessed March 07, 2021. http://hdl.handle.net/11375/22254.

MLA Handbook (7^th Edition):

Young, Courtney A. “Patterns of parental care and chick recognition in a joint-nesting rail, Pūkeko (Porphyrio melanotus melanotus).” 2017. Web. 07 Mar 2021.

Vancouver:

Young CA. Patterns of parental care and chick recognition in a joint-nesting rail, Pūkeko (Porphyrio melanotus melanotus). [Internet] [Masters thesis]. McMaster University; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11375/22254.

Council of Science Editors:

Young CA. Patterns of parental care and chick recognition in a joint-nesting rail, Pūkeko (Porphyrio melanotus melanotus). [Masters Thesis]. McMaster University; 2017. Available from: http://hdl.handle.net/11375/22254

University of Toronto

5. Heslin Piper, Laura Ann. Social and Environmental Factors Influencing Reproductive Success in a Cooperatively Breeding Primate.

Degree: 2015, University of Toronto

URL: http://hdl.handle.net/1807/97796

►

Cooperative breeding is a system where non-breeding individuals care for another individual's offspring. In primates, cooperative breeding is only found in the family Callitrichidae. Leontopithecus… (more)

Subjects/Keywords: Cooperative breeding; Habitat use; Infant success; Primate; Reproduction; Social behaviour; 0602

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Heslin Piper, L. A. (2015). Social and Environmental Factors Influencing Reproductive Success in a Cooperatively Breeding Primate. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/97796

Chicago Manual of Style (16^th Edition):

Heslin Piper, Laura Ann. “Social and Environmental Factors Influencing Reproductive Success in a Cooperatively Breeding Primate.” 2015. Masters Thesis, University of Toronto. Accessed March 07, 2021. http://hdl.handle.net/1807/97796.

MLA Handbook (7^th Edition):

Heslin Piper, Laura Ann. “Social and Environmental Factors Influencing Reproductive Success in a Cooperatively Breeding Primate.” 2015. Web. 07 Mar 2021.

Vancouver:

Heslin Piper LA. Social and Environmental Factors Influencing Reproductive Success in a Cooperatively Breeding Primate. [Internet] [Masters thesis]. University of Toronto; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1807/97796.

Council of Science Editors:

Heslin Piper LA. Social and Environmental Factors Influencing Reproductive Success in a Cooperatively Breeding Primate. [Masters Thesis]. University of Toronto; 2015. Available from: http://hdl.handle.net/1807/97796

University of Cambridge

6. English, Sinéad. Individual variation in cooperative behaviour in meerkats.

Degree: PhD, 2010, University of Cambridge

URL: http://www.dspace.cam.ac.uk/handle/1810/225183https://www.repository.cam.ac.uk/bitstream/1810/225183/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/5/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/3/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/6/Sinead%20English%20Final%20Thesis.pdf.jpg

► Individual variation in cooperation is a striking yet poorly understood feature of many animal societies, particularly in cooperative breeders where individuals assist in the care… (more)

▼ Individual variation in cooperation is a striking yet poorly understood feature of many animal societies, particularly in cooperative breeders where individuals assist in the care of young that are not their own. While previous research on these systems has emphasised the plasticity of helping and how it varies with current environmental and social conditions, in this dissertation I examine how individual variation is constrained and influenced by trade-offs with other behaviours and experiences in early life. I demonstrate that variation in cooperative pup care (babysitting and provisioning) is consistent within individuals over time (Chapter 3). Provisioning is more consistent than babysitting, although the two behaviours are highly correlated within individuals. I then focus on the variation in helping that remains once current factors, such as condition, group size and food availability, are taken into account. In Chapter 4, I explore the possibility that variation in helping can be explained by personality, or consistency in behavioural traits such as exploration or risk-taking. I find little evidence for consistent individual differences in field measures of personality traits, however, with such behaviours instead being group-specific. Early social experiences are known to have important and lasting effects on later fitness and behaviour: in Chapter 5, I demonstrate that, in female meerkats only, growing up in a group with more helpers is correlated with reduced cooperation later in life. This result suggests the importance of future fitness in influencing current cooperative behaviour, as females raised in larger groups are more likely to attain dominance. Finally, I examine the extent to which vocal communication between carers and young is influenced by variation in contributions to cooperation. Females are more sensitive to increased begging rate (Chapter 6), which reflects general sex differences in cooperative behaviour. Carers modify their vocalizations but not their foraging behaviour in the presence of pups, and the way in which they vocalize during provisioning events suggests these calls serve to increase efficiency of prey transfer (Chapter 7).

Subjects/Keywords: Cooperative breeding; Individual variation; Meerkats; Personality; Communication; Parental care

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

English, S. (2010). Individual variation in cooperative behaviour in meerkats. (Doctoral Dissertation). University of Cambridge. Retrieved from http://www.dspace.cam.ac.uk/handle/1810/225183https://www.repository.cam.ac.uk/bitstream/1810/225183/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/5/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/3/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/6/Sinead%20English%20Final%20Thesis.pdf.jpg

Chicago Manual of Style (16^th Edition):

English, Sinéad. “Individual variation in cooperative behaviour in meerkats.” 2010. Doctoral Dissertation, University of Cambridge. Accessed March 07, 2021. http://www.dspace.cam.ac.uk/handle/1810/225183https://www.repository.cam.ac.uk/bitstream/1810/225183/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/5/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/3/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/6/Sinead%20English%20Final%20Thesis.pdf.jpg.

MLA Handbook (7^th Edition):

English, Sinéad. “Individual variation in cooperative behaviour in meerkats.” 2010. Web. 07 Mar 2021.

Vancouver:

English S. Individual variation in cooperative behaviour in meerkats. [Internet] [Doctoral dissertation]. University of Cambridge; 2010. [cited 2021 Mar 07]. Available from: http://www.dspace.cam.ac.uk/handle/1810/225183https://www.repository.cam.ac.uk/bitstream/1810/225183/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/5/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/3/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/6/Sinead%20English%20Final%20Thesis.pdf.jpg.

Council of Science Editors:

English S. Individual variation in cooperative behaviour in meerkats. [Doctoral Dissertation]. University of Cambridge; 2010. Available from: http://www.dspace.cam.ac.uk/handle/1810/225183https://www.repository.cam.ac.uk/bitstream/1810/225183/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/5/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/3/Sinead%20English%20Final%20Thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/225183/6/Sinead%20English%20Final%20Thesis.pdf.jpg

University of Exeter

7. Wood, Emma Mary. Causes and fitness consequences of telomere dynamics in a wild social bird.

Degree: PhD, 2017, University of Exeter

URL: http://hdl.handle.net/10871/29777

► Telomeres are increasingly used as biomarkers of somatic maintenance and could conceivably play a causal role in life history trade-offs. In this thesis, I use… (more)

▼ Telomeres are increasingly used as biomarkers of somatic maintenance and could conceivably play a causal role in life history trade-offs. In this thesis, I use longitudinal telomere measures from a wild population of cooperatively breeding white-browed sparrow weavers (Plocepasser mahali) to further our understanding of the causes and fitness consequences of individual variation in somatic maintenance, with particular focus on hitherto unexplored effects of the social environment. In Chapter 2, I start by investigating the key prediction of life-history theory that shortfalls in somatic maintenance in early life entail later-life costs, and find supporting evidence. Nestlings with higher within-individual rates of telomere attrition show reduced survival to the following season, even after controlling for the effects of variation in body mass. In Chapter 3, I then investigate the effects of the social and abiotic environment on nestling telomere length and attrition rates and find the first support, to my knowledge, for the key prediction that helpers in cooperatively breeding societies alleviate telomere attrition rates in growing offspring (consistent with the expectation that helper contributions to nestling feeding relax resource allocation trade-offs in offspring). In addition, I find that rainfall prior to egg-laying has a positive effect on hatchling telomere length; an effect that most likely arises via egg- or incubation-mediated maternal effects. In Chapter 4, I investigate the causes of variation in telomere attrition rates in adults, and while there are no overall differences in telomere length or long-term within-individual telomere dynamics between dominant and subordinate birds, my findings are suggestive of dominance-related differences in the short-term regulation of telomere length. In addition, and in concordance with predictions of life-history theory regarding trade-offs between somatic maintenance and reproduction, I find that annual rainfall (a proxy for reproduction-related activity during the breeding season) negatively predicts the within-individual rate of change in telomere length in adults specifically over the breeding season; there was no such relationship in the non-breeding season. Finally, in Chapter 5, I investigate the extent to which natural variation in oxidative state predicts variation in within-individual rates of change in telomere length over time. This chapter provides evidence suggestive of associations between oxidative state and telomere dynamics in a natural population, and highlights complexity in the nature of these relationships. Together my findings provide novel support for key predictions of life-history theory regarding the causes and consequences of variation in somatic maintenance, and lend strength to the view that longitudinal field studies of telomere dynamics can offer useful insights in this regard. Furthermore, my findings highlight the potential for diverse effects of the social environment on patterns of somatic maintenance, and specifically hitherto…

Subjects/Keywords: 500; telomere; life history; cooperative breeding; social environment; aging; oxidative stress

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wood, E. M. (2017). Causes and fitness consequences of telomere dynamics in a wild social bird. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/29777

Chicago Manual of Style (16^th Edition):

Wood, Emma Mary. “Causes and fitness consequences of telomere dynamics in a wild social bird.” 2017. Doctoral Dissertation, University of Exeter. Accessed March 07, 2021. http://hdl.handle.net/10871/29777.

MLA Handbook (7^th Edition):

Wood, Emma Mary. “Causes and fitness consequences of telomere dynamics in a wild social bird.” 2017. Web. 07 Mar 2021.

Vancouver:

Wood EM. Causes and fitness consequences of telomere dynamics in a wild social bird. [Internet] [Doctoral dissertation]. University of Exeter; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10871/29777.

Council of Science Editors:

Wood EM. Causes and fitness consequences of telomere dynamics in a wild social bird. [Doctoral Dissertation]. University of Exeter; 2017. Available from: http://hdl.handle.net/10871/29777

University of Exeter

8. Cram, Dominic Laurence. Causes and consequences of oxidative stress in a cooperatively breeding bird.

Degree: PhD, 2013, University of Exeter

URL: http://hdl.handle.net/10871/13683

► Oxidative stress has recently been highlighted as a potential physiological mechanism underpinning life-history trade-offs in animals. While the role of oxidative stress in mediating such… (more)

▼ Oxidative stress has recently been highlighted as a potential physiological mechanism underpinning life-history trade-offs in animals. While the role of oxidative stress in mediating such trade-offs is receiving increasing attention, its importance in wild populations remains poorly understood. In this thesis, I use a wild population of cooperatively breeding white-browed sparrow weavers (Plocepasser mahali) to investigate the role that oxidative stress plays in mediating the costs of reproduction and immune defence. Cooperative animal societies offer a unique opportunity to investigate the costs of reproduction, because dominants frequently monopolise breeding opportunities (exhibiting higher reproductive effort than subordinates), and subordinate cooperative contributions frequently lighten reproductive workloads. My findings reveal, first, that dominants’ reproductive monopolies do not arise because they exhibit superior oxidative balance, as no such rank-related differences in oxidative state exist prior to breeding (Chapter 2). However, the higher reproductive effort of dominant females may underpin their differential declines in antioxidant protection after the breeding season (Chapter 2). Second, experimental manipulation of reproductive effort reveals marked oxidative damage and body mass costs incurred during reproduction. However, these costs are entirely mitigated in large social groups, suggesting that the cooperative contributions of helpers may offset the costs of reproduction for all group members (Chapter 3). While this represents rare evidence of an oxidative stress cost of reproduction in the wild, longitudinal data suggests that these costs do not endure after the breeding season (Chapter 4), highlighting that circulating markers of oxidative balance are unlikely to mediate long-term costs of reproduction. Finally, an immune activation experiment reveals that, while mounting an immune response causes no net change in oxidative balance, the scale of the response can be adjusted according to baseline antioxidant protection in an oxidative-condition-dependent manner (Chapter 5). Together my results provide support for the role of oxidative stress in shaping life histories in the wild. Furthermore, evidence of rank-related disparities in oxidative balance and the avoidance of reproductive costs in large social groups may have important implications for our understanding of both the evolution of cooperative breeding and the patterns of health and ageing in societies.

Subjects/Keywords: 598.17; Oxidative stress; Cooperative breeding; Life-history; Trade-offs; Plocepasser mahali

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cram, D. L. (2013). Causes and consequences of oxidative stress in a cooperatively breeding bird. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/13683

Chicago Manual of Style (16^th Edition):

Cram, Dominic Laurence. “Causes and consequences of oxidative stress in a cooperatively breeding bird.” 2013. Doctoral Dissertation, University of Exeter. Accessed March 07, 2021. http://hdl.handle.net/10871/13683.

MLA Handbook (7^th Edition):

Cram, Dominic Laurence. “Causes and consequences of oxidative stress in a cooperatively breeding bird.” 2013. Web. 07 Mar 2021.

Vancouver:

Cram DL. Causes and consequences of oxidative stress in a cooperatively breeding bird. [Internet] [Doctoral dissertation]. University of Exeter; 2013. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10871/13683.

Council of Science Editors:

Cram DL. Causes and consequences of oxidative stress in a cooperatively breeding bird. [Doctoral Dissertation]. University of Exeter; 2013. Available from: http://hdl.handle.net/10871/13683

Texas State University – San Marcos

9. Rylander, Rebekah J. Mister Parid's Neighborhood - dispersal behavior and flocking dynamics of the social Black-crested Titmouse (Baeolophus atricristatus).

Degree: MS, Wildlife Ecology, 2015, Texas State University – San Marcos

URL: https://digital.library.txstate.edu/handle/10877/5904

► The black-crested titmouse (Baeolophus atricristatus, hereafter BCTI) is a small, non-migratory passerine that has a tendency to form family flocking groups due to delayed juvenile… (more)

▼ The black-crested titmouse (Baeolophus atricristatus, hereafter BCTI) is a small, non-migratory passerine that has a tendency to form family flocking groups due to delayed juvenile dispersal each summer. A recently elevated species, separated from its sister-taxon, the tufted titmouse (Baeolophus bicolor), the BCTI is an ideal model species for studying family-flocking dynamics. The three goals of my project were to: (1) determine whether intrinsic factors, such as weight or sex, or extrinsic factors, such as territory size or habitat composition, affect the natal dispersal of the BCTI; (2) determine whether BCTI flock or territory size varied across seasons; and (3) examine the social dynamics of familial related BCTI individuals. Between 2013-2015, 263 individual BCTI were captured and color-banded at the Freeman Center in San Marcos, Texas across a study area comprising approximately 1,400 ha where family flocks were resighted and monitored. Over 800 hours of focal observations were recorded. Using a generalized linear mixed effects model and Fisher’s exact test, the intrinsic factors weight (p < 0.01) and sex (p < 0.01) of juvenile BCTI appeared to influence which individuals in a brood would delay their dispersal. Through another generalized linear mixed effects model, the predictor Julian date was found to be a significant predictor for annual flock size (p < 0.001), with territory size increasing an average 3.4 ha (p < 0.01) between the breeding season (March-July) and the non- breeding season (August – February). Juvenile BCTI that delayed their dispersal often establish territories adjacent to their parents the following year, thus creating kin- structured neighborhoods. Social interactions between related individuals on neighboring territories were almost always passive as opposed to aggressive (p < 0.05), potentially leading to an increase in inclusive fitness for both individuals involved. Family flocking dynamics of the BCTI are more complicated than previously thought, and future research may yield insight into how this species evolved its current social structure. With the ever-growing threat of habitat fragmentation, the importance of the family unit and social dynamics to the survival of the BCTI may be key for management of this species. Advisors/Committee Members: Green, Michael C. (advisor), Huffman, David G. (committee member), Aspbury, Andrea S. (committee member).

Subjects/Keywords: Dispersal; Titmouse; Cooperative breeding; Black-crested titmouse – Ecology – Texas – San Marcos

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rylander, R. J. (2015). Mister Parid's Neighborhood - dispersal behavior and flocking dynamics of the social Black-crested Titmouse (Baeolophus atricristatus). (Masters Thesis). Texas State University – San Marcos. Retrieved from https://digital.library.txstate.edu/handle/10877/5904

Chicago Manual of Style (16^th Edition):

Rylander, Rebekah J. “Mister Parid's Neighborhood - dispersal behavior and flocking dynamics of the social Black-crested Titmouse (Baeolophus atricristatus).” 2015. Masters Thesis, Texas State University – San Marcos. Accessed March 07, 2021. https://digital.library.txstate.edu/handle/10877/5904.

MLA Handbook (7^th Edition):

Rylander, Rebekah J. “Mister Parid's Neighborhood - dispersal behavior and flocking dynamics of the social Black-crested Titmouse (Baeolophus atricristatus).” 2015. Web. 07 Mar 2021.

Vancouver:

Rylander RJ. Mister Parid's Neighborhood - dispersal behavior and flocking dynamics of the social Black-crested Titmouse (Baeolophus atricristatus). [Internet] [Masters thesis]. Texas State University – San Marcos; 2015. [cited 2021 Mar 07]. Available from: https://digital.library.txstate.edu/handle/10877/5904.

Council of Science Editors:

Rylander RJ. Mister Parid's Neighborhood - dispersal behavior and flocking dynamics of the social Black-crested Titmouse (Baeolophus atricristatus). [Masters Thesis]. Texas State University – San Marcos; 2015. Available from: https://digital.library.txstate.edu/handle/10877/5904

Universidade do Rio Grande do Norte

10. Cutrim, Fernanda Helena Ribeiro. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens .

Degree: 2007, Universidade do Rio Grande do Norte

URL: http://repositorio.ufrn.br/handle/123456789/17383

► The Callitrichidae family presents cooperative breeding, where breeders and non breeders take care of the offspring. The aspects of care analyzed in this study were… (more)

▼ The Callitrichidae family presents cooperative breeding, where breeders and non breeders take care of the offspring. The aspects of care analyzed in this study were infant carrying, supervision, proximity and food transfer. Three sets of infants from two wild groups of Callithrix jacchus were studied in the environments of Caatinga (Assu group) and Atlantic Forest (Jundiaí group). The methods used in the study were instantaneous focal sampling (infant carrying, supervision and proximity) and continuous focal sampling (food transfer). In the two sets observed in Assu group, the father carried and transferred food to infants more than the rest of the group. The biggest contribution in supervision was from the father and from another adult male. The members that remained in proximity to the infants in both groups were the younger in the groups (juveniles and sub-adults). In the Jundiaí group, the father and the adult male helper of the group were the main caregivers; one of the sub-adult females was responsible for supervision of the infants. With the disappearance of the reproductive male and one of the sub-adults females in 3º month of infants life, the care was redistributed and the only adult male left in the group was the animal that contributed more in provisioning of the infant. In the Assu group, there were adult females in its composition which were involved in agonistic interactions with breeders and adult males, and seemed to influence their low participation in care. Food transfer initiates early in the development of the infants, as a way to encourage nutritional independence. Different types of food transfer (active food transfer, food steal, food steal attempt, passive food transfer and food handling) were observed in the study and frequency of each one varied with developmental phase and tolerance by the members. One relevant data of the study was the presence of active food transfer in Assu group, since in literature there are very few registers of this type of transfer for this species. It is important that groups from distinct environments and composition be studied for a better understanding of the dynamics of infants development Advisors/Committee Members: Miranda, Maria de Fátima Arruda de (advisor), CPF:09453997404 (advisor), http://lattes.cnpq.br/4654421846443562 (advisor).

Subjects/Keywords: Callithrix jacchus; Cuidado cooperativo; Infante; Desenvolvimento; Callithrix jacchus; Cooperative breeding; Infant; Development

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cutrim, F. H. R. (2007). Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens . (Thesis). Universidade do Rio Grande do Norte. Retrieved from http://repositorio.ufrn.br/handle/123456789/17383

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cutrim, Fernanda Helena Ribeiro. “Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens .” 2007. Thesis, Universidade do Rio Grande do Norte. Accessed March 07, 2021. http://repositorio.ufrn.br/handle/123456789/17383.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cutrim, Fernanda Helena Ribeiro. “Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens .” 2007. Web. 07 Mar 2021.

Vancouver:

Cutrim FHR. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens . [Internet] [Thesis]. Universidade do Rio Grande do Norte; 2007. [cited 2021 Mar 07]. Available from: http://repositorio.ufrn.br/handle/123456789/17383.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cutrim FHR. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens . [Thesis]. Universidade do Rio Grande do Norte; 2007. Available from: http://repositorio.ufrn.br/handle/123456789/17383

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Fernanda Helena Ribeiro Cutrim. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens.

Degree: 2007, Universidade Federal do Rio Grande do Norte

URL: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1254

►

A família Callitrichidae apresenta um sistema de cuidado cooperativo, onde os reprodutores e não reprodutores cuidam da prole. Os aspectos do cuidado à prole analisados… (more)

▼

A família Callitrichidae apresenta um sistema de cuidado cooperativo, onde os reprodutores e não reprodutores cuidam da prole. Os aspectos do cuidado à prole analisados neste estudo foram o transporte dos infantes, a supervisão, a proximidade e as transferências de alimento. Foram estudados dois grupos de Callithrix jacchus silvestres em ambientes de Caatinga (Grupo de Assu) e de Floresta Atlântica (Grupo de Jundiaí). Os métodos utilizados foram animal focal (transporte do infante, supervisão e proximidade) e o focal contínuo (transferência de alimento). Nas duas proles observadas no grupo de Assu, o indivíduo que mais contribuiu no transporte dos filhotes e no provisionamento dos infantes foi o pai. A maior contribuição na supervisão de uma prole foi do pai e na outra de um macho adulto. Os membros mais próximos dos infantes nos dois grupos foram os animais de faixas etárias mais próximas (juvenis e sub-adultos). Na única prole do grupo de Jundiaí observada, o pai e o único ajudante macho adulto do grupo foram os principais carregadores dos filhotes e uma das fêmeas sub-adultas, a principal responsável pela supervisão dos infantes. Com o desaparecimento do macho reprodutor e uma das fêmeas sub-adultas no 3 mês de vida dos infantes, o cuidado foi redistribuído e o único macho adulto foi o que mais contribuiu no provisionamento do infante. O grupo de Assu apresentava fêmeas adultas em sua composição e nele ocorreram mais interações agonísticas entre estas fêmeas adultas com os reprodutores e machos adultos, o que refletiu a baixa freqüência de ajuda deste sexo-idade. A transferência de alimento inicia cedo no desenvolvimento dos filhotes como maneira de encorajar a independência nutricional. Diversos tipos de transferência de alimento (transferência ativa, roubo, tentativa de roubo, transferência passiva e manipulação do alimento) foram observados no estudo e a freqüência de cada um variou de acordo com o estágio de desenvolvimento do infante e com a tolerância dos membros do grupo. Um dado relevante do estudo foi a presença de transferência ativa de alimento no grupo de Assu, já que na literatura existem poucos registros deste tipo de transferência para esta espécie. É interessante que grupos de ambientes e composição distintos sejam estudados para uma melhor compreensão da dinâmica das transferências de alimento na natureza

The Callitrichidae family presents cooperative breeding, where breeders and non breeders take care of the offspring. The aspects of care analyzed in this study were infant carrying, supervision, proximity and food transfer. Three sets of infants from two wild groups of Callithrix jacchus were studied in the environments of Caatinga (Assu group) and Atlantic Forest (Jundiaí group). The methods used in the study were instantaneous focal sampling (infant carrying, supervision and proximity) and continuous focal sampling (food transfer). In the two sets observed in Assu group, the father carried and transferred food to infants more than the rest of the group. The biggest contribution in…

Advisors/Committee Members: Carmen Alonso Samiguel, Arrilton Araújo de Souza, Maria de Fátima Arruda de Miranda.

Subjects/Keywords: Callithrix jacchus; Cuidado cooperativo; Infante; Desenvolvimento; BIOLOGIA GERAL; Callithrix jacchus; Cooperative breeding; Infant; Development

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cutrim, F. H. R. (2007). Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens. (Thesis). Universidade Federal do Rio Grande do Norte. Retrieved from http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cutrim, Fernanda Helena Ribeiro. “Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens.” 2007. Thesis, Universidade Federal do Rio Grande do Norte. Accessed March 07, 2021. http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cutrim, Fernanda Helena Ribeiro. “Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens.” 2007. Web. 07 Mar 2021.

Vancouver:

Cutrim FHR. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens. [Internet] [Thesis]. Universidade Federal do Rio Grande do Norte; 2007. [cited 2021 Mar 07]. Available from: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cutrim FHR. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens. [Thesis]. Universidade Federal do Rio Grande do Norte; 2007. Available from: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Florida

12. Han, Kin-Lan. Mating System and Genetic Structure of Brown-Headed Nuthatches (Sitta Pusilla) and Their Sister, Pygmy Nuthatches (Sitta Pygmaea).

Degree: PhD, Zoology - Biology, 2016, University of Florida

URL: https://ufdc.ufl.edu/UFE0049848

Subjects/Keywords: breeding; cooperative; fragmentation; habitat; nuthatch; paternity

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Han, K. (2016). Mating System and Genetic Structure of Brown-Headed Nuthatches (Sitta Pusilla) and Their Sister, Pygmy Nuthatches (Sitta Pygmaea). (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049848

Chicago Manual of Style (16^th Edition):

Han, Kin-Lan. “Mating System and Genetic Structure of Brown-Headed Nuthatches (Sitta Pusilla) and Their Sister, Pygmy Nuthatches (Sitta Pygmaea).” 2016. Doctoral Dissertation, University of Florida. Accessed March 07, 2021. https://ufdc.ufl.edu/UFE0049848.

MLA Handbook (7^th Edition):

Han, Kin-Lan. “Mating System and Genetic Structure of Brown-Headed Nuthatches (Sitta Pusilla) and Their Sister, Pygmy Nuthatches (Sitta Pygmaea).” 2016. Web. 07 Mar 2021.

Vancouver:

Han K. Mating System and Genetic Structure of Brown-Headed Nuthatches (Sitta Pusilla) and Their Sister, Pygmy Nuthatches (Sitta Pygmaea). [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2021 Mar 07]. Available from: https://ufdc.ufl.edu/UFE0049848.

Council of Science Editors:

Han K. Mating System and Genetic Structure of Brown-Headed Nuthatches (Sitta Pusilla) and Their Sister, Pygmy Nuthatches (Sitta Pygmaea). [Doctoral Dissertation]. University of Florida; 2016. Available from: https://ufdc.ufl.edu/UFE0049848

Clemson University

13. Slack, Carly. SOCIAL LEARNING AND THE DEVELOPMENT OF SOCIAL FORAGING BEHAVIOR IN GOLDEN LION TAMARINS (LEONTOPITHECUS ROSALIA).

Degree: MS, Wildlife and Fisheries Biology, 2014, Clemson University

URL: https://tigerprints.clemson.edu/all_theses/1956

► Golden lion tamarins are highly social, group-living primates and are cooperative breeders. As such they are an ideal species in which to study social… (more)

▼ Golden lion tamarins are highly social, group-living primates and are cooperative breeders. As such they are an ideal species in which to study social learning. Observations of six groups of wild golden lion tamarins were used to examine the development of social foraging and related behaviors in juveniles. Rates at which juveniles approached adults that were foraging for plant foods tended to decline with age (F=3.34, p=.0531), and the rates at which they begged (F=4.71, p=.0193), and foraged at the same site (i.e., co-foraged; F=3.44, p=.0495) decreased significantly. For prey foraging, rates at which adults vacated a site to allow a juvenile access (F=7.11, p=.0039), at which juveniles begged (F=5.41, p=.0119), and co-foraged (F=5.09, p=.0148) declined significantly with age. Interest in different types of prey foraging substrates and interest in co-foraging also were compared across juvenile age categories. By the time juveniles were in the oldest age category (about one year of age), co-foraging behaviors were still occurring at significantly higher rates than for adults. I investigated two hypotheses concerning the function of co-foraging: the nutrition hypothesis and the information hypothesis. The results most strongly supported the information hypothesis, which predicts that co-foraging provides young tamarins the opportunity to acquire knowledge about food and/or foraging. Behavioral experiments involving vocalization playbacks were carried out with one group of golden lion tamarins at Zoo Atlanta in order to investigate how a specific vocalization, the food-offering call, may influence the development of foraging behavior. The playback experiments contribute to the literature on interactions involving the food-offering call by testing the hypothesis that the call serves to focus young tamarins on productive foraging sites and thereby facilitates learning about feeding or foraging. Results of this study were inconclusive with respect to whether tamarins are preferentially attracted to foraging sites associated with the food-offering vocalization. However, analysis of tamarin foraging activity during experimentation allowed me to make recommendations for future exploration of tamarin response to the food-offering call. Advisors/Committee Members: Rapaport, Lisa G, Yarrow , Greg, Tonkyn , David.

Subjects/Keywords: co-feeding; co-foraging; cooperative breeding; lion tamarin; parental care; teaching; Animal Sciences

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Slack, C. (2014). SOCIAL LEARNING AND THE DEVELOPMENT OF SOCIAL FORAGING BEHAVIOR IN GOLDEN LION TAMARINS (LEONTOPITHECUS ROSALIA). (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/1956

Chicago Manual of Style (16^th Edition):

Slack, Carly. “SOCIAL LEARNING AND THE DEVELOPMENT OF SOCIAL FORAGING BEHAVIOR IN GOLDEN LION TAMARINS (LEONTOPITHECUS ROSALIA).” 2014. Masters Thesis, Clemson University. Accessed March 07, 2021. https://tigerprints.clemson.edu/all_theses/1956.

MLA Handbook (7^th Edition):

Slack, Carly. “SOCIAL LEARNING AND THE DEVELOPMENT OF SOCIAL FORAGING BEHAVIOR IN GOLDEN LION TAMARINS (LEONTOPITHECUS ROSALIA).” 2014. Web. 07 Mar 2021.

Vancouver:

Slack C. SOCIAL LEARNING AND THE DEVELOPMENT OF SOCIAL FORAGING BEHAVIOR IN GOLDEN LION TAMARINS (LEONTOPITHECUS ROSALIA). [Internet] [Masters thesis]. Clemson University; 2014. [cited 2021 Mar 07]. Available from: https://tigerprints.clemson.edu/all_theses/1956.

Council of Science Editors:

Slack C. SOCIAL LEARNING AND THE DEVELOPMENT OF SOCIAL FORAGING BEHAVIOR IN GOLDEN LION TAMARINS (LEONTOPITHECUS ROSALIA). [Masters Thesis]. Clemson University; 2014. Available from: https://tigerprints.clemson.edu/all_theses/1956

Virginia Tech

14. Cooper, Caren Beth. The Behavioral Ecology and Conservation of an Australian Passerine, the Brown Treecreeper (Climacteris picumnus).

Degree: PhD, Biology, 2000, Virginia Tech

URL: http://hdl.handle.net/10919/29588

► This study addressed two aspects of ecological theory developed primarily in North America and examined these theories using an Australian passerine as a model species.… (more)

▼ This study addressed two aspects of ecological theory developed primarily in North America and examined these theories using an Australian passerine as a model species. The first theory concerns the mechanisms by which habitat fragmentation affects avian populations. I investigated the mechanisms causing the decline of the Brown Treecreeper (Climacteris picumnus) in fragmented habitat, and specifically considered the effects of isolation and habitat degradation, which are potentially important in Australian woodlands, and edge (patch size), which are important in North America. Brown Treecreeper groups were as productive in isolated patches as in connected patches of habitat regardless of patch size, yet unpaired males were common in isolated fragments of habitat. I conducted a field experiment that confirmed that female dispersal was disrupted among isolated fragments. Thus, my results suggested Brown Treecreepers were declining due to disruption of dispersal by habitat fragmentation rather than degradation or edge effects. I compared the results of an individual-based, spatially explicit simulation model to field observations and concluded that territory spatial arrangement and matrix composition altered dispersal success, recruitment, and subsequent population growth. With the aid of a geographic information system, I determined that both landscape factors (fragmentation patterns within 4.5-km) and habitat characteristics (cavity density) explained Brown Treecreeper presence and absence from random locations in woodland habitat. The birds appear to be absent from suitable habitat in unsuitable landscapes. The second theory I addressed concerns the maintenance of avian cooperative breeding. The most widely accepted models to explain cooperative breeding suggest that individuals that delay dispersal obtain a payoff under conditions in which the quality of breeding positions varies greatly. These models arose chiefly from a few long-term studies in North American. This is an unfortunate bias because the occurrence of cooperative breeding among birds of Gondwanan origin is 22%, whereas the worldwide incidence is only 3%. I used demographic and habitat data to examine the influence of habitat and cooperative breeding on Brown Treecreeper fitness. Group size affected one component of fitness and habitat variables affected another. High cavity density may be favorable due to intense inter-specific competition for suitable cavities, which Brown Treecreepers require for roosting and nesting. Low tree density may be advantageous by favoring ground foraging, in which Brown Treecreepers frequently engage. Experimental manipulations of important habitat variables are needed to determine whether variability in these ecological factors is critical in maintaining group formation in this species. Advisors/Committee Members: Walters, Jeffrey R. (committeechair), Jones, Robert H. (committee member), Haas, Carola A. (committee member), Cranford, Jack A. (committee member), Webster, Jackson R. (committee member).

Subjects/Keywords: cooperative breeding; fragmentation; degradation; isolation; edge

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cooper, C. B. (2000). The Behavioral Ecology and Conservation of an Australian Passerine, the Brown Treecreeper (Climacteris picumnus). (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/29588

Chicago Manual of Style (16^th Edition):

Cooper, Caren Beth. “The Behavioral Ecology and Conservation of an Australian Passerine, the Brown Treecreeper (Climacteris picumnus).” 2000. Doctoral Dissertation, Virginia Tech. Accessed March 07, 2021. http://hdl.handle.net/10919/29588.

MLA Handbook (7^th Edition):

Cooper, Caren Beth. “The Behavioral Ecology and Conservation of an Australian Passerine, the Brown Treecreeper (Climacteris picumnus).” 2000. Web. 07 Mar 2021.

Vancouver:

Cooper CB. The Behavioral Ecology and Conservation of an Australian Passerine, the Brown Treecreeper (Climacteris picumnus). [Internet] [Doctoral dissertation]. Virginia Tech; 2000. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10919/29588.

Council of Science Editors:

Cooper CB. The Behavioral Ecology and Conservation of an Australian Passerine, the Brown Treecreeper (Climacteris picumnus). [Doctoral Dissertation]. Virginia Tech; 2000. Available from: http://hdl.handle.net/10919/29588

University of Michigan

15. Curry, Robert Lawrence. Evolution And Ecology Of Cooperative Breeding In Galapagos Mockingbirds (nesomimus Spp.).

Degree: PhD, Ecology, 1987, University of Michigan

URL: http://hdl.handle.net/2027.42/128001

► Studies of avian cooperative breeding have emphasized the roles of environmental stability in territorial species and environ- mental uncertainty in colonial cooperative breeders. Galapagos mockingbirds… (more)

▼ Studies of avian cooperative breeding have emphasized the roles of environmental stability in territorial species and environ- mental uncertainty in colonial cooperative breeders. Galapagos mockingbirds (Nesomimus spp.) are territorial but they inhabit a climatically variable environment. To address evolutionary and ecological questions about cooperative breeding in this endemic genus, I combined intensive long-term research on N. parvulus with comparative study of its three allopatric congeners. Annual rainfall in the Galapagos varies, as does mockingbird breeding. Nevertheless, a population of N. parvulus on Isla Genovesa is characterized by demographic stability that promotes cooperative breeding. High adult survival favoring males and an apparent limit on breeding density produce an excess of non- breeding males. Social groups are maintained because dispersal by these birds is constrained by habitat saturation. Most helpers are non-breeding males in their natal groups. Climatic extremes cause temporary shifts in population structure, and relaxed constraints on dispersal and breeding cause changes in social organization. Group structure and interactions are unusually complex in N. parvulus. Groups contain 2-24 birds and up to three nesting pairs. Reproductive success is correlated with dominance because dominants interfere with nesting by subordinates. Conflict within groups also involves extra-pair copulations by dominant males. Groups with multiple pairs (plural breeding) may result from variable climatic conditions that favor opportunistic breeding by young mockingbirds. Helping by N. parvulus is flexible and kin-directed. The probability that a bird helps increases with its genetic relatedness to nestlings. Because most helpers improve the reproductive success of relatives, helping confers small indirect fitness benefits. Few receive large direct benefits, and helping is not a prerequisite for becoming a breeder. Comparative results further suggest that cooperative breeding is promoted by habitat limitation. N. trifasciatus and N. macdonaldi on two islands live in large cooperatively breeding territorial groups filling all habitat, but on San Cristobal, predation and habitat diversity are correlated with small group size in N. melanotis. Complexity of Galapagos mockingbird society in terms of group structure, conflict, and flexible helping behavior is attributable to the combined influences of habitat constraints and climatic variability.

Subjects/Keywords: Breeding; Cooperative; Ecology; Evolution; Galapagos; Mockingbirds; Nesomimus; Spp

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Curry, R. L. (1987). Evolution And Ecology Of Cooperative Breeding In Galapagos Mockingbirds (nesomimus Spp.). (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/128001

Chicago Manual of Style (16^th Edition):

Curry, Robert Lawrence. “Evolution And Ecology Of Cooperative Breeding In Galapagos Mockingbirds (nesomimus Spp.).” 1987. Doctoral Dissertation, University of Michigan. Accessed March 07, 2021. http://hdl.handle.net/2027.42/128001.

MLA Handbook (7^th Edition):

Curry, Robert Lawrence. “Evolution And Ecology Of Cooperative Breeding In Galapagos Mockingbirds (nesomimus Spp.).” 1987. Web. 07 Mar 2021.

Vancouver:

Curry RL. Evolution And Ecology Of Cooperative Breeding In Galapagos Mockingbirds (nesomimus Spp.). [Internet] [Doctoral dissertation]. University of Michigan; 1987. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2027.42/128001.

Council of Science Editors:

Curry RL. Evolution And Ecology Of Cooperative Breeding In Galapagos Mockingbirds (nesomimus Spp.). [Doctoral Dissertation]. University of Michigan; 1987. Available from: http://hdl.handle.net/2027.42/128001

Universidade de Brasília

16. Eduardo da Silva Alves dos Santos. Biologia reprodutiva de Vanellus chilensis (Aves: Charadriidae) : por que reproduzir em grupo?.

Degree: 2009, Universidade de Brasília

URL: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5033

►

Recentemente, foi demonstrado que fêmeas reprodutoras reduzem o investimento nutricional nos ovos sem que os filhotes sejam prejudicados. Isso ocorre porque ajudantes de ninho compensam… (more)

▼

Recentemente, foi demonstrado que fêmeas reprodutoras reduzem o investimento nutricional nos ovos sem que os filhotes sejam prejudicados. Isso ocorre porque ajudantes de ninho compensam a redução de nutrientes dos ovos trazendo alimento extra para os filhotes. Usando o quero-quero (Vanellus chilensis) como objeto de estudo, esta dissertação testou o efeito da presença de indivíduos extra no investimento maternal de fêmeas reprodutoras. Para isso, este trabalho avaliou 4 hipóteses: (1) o tamanho da ninhada é maior em ninhos de grupos, (2) o período de incubação é reduzido em grupos que contém indivíduos extra, (3) a qualidade dos ovos é reduzida na presença de indivíduos extra, e (4) os filhotes de ovos de fêmeas com ajudantes possuem menor índice de massa corporal (IMC). A meta-análise flexível foi adaptada para gerar uma estimativa de tamanho de efeito médio para a relação entre tamanho do grupo e o investimento maternal. Os resultados da metaanálise indicam uma associação negativa entre a duração da incubação e o tamanho do grupo. Uma associação negativa entre o volume dos ovos e o tamanho do grupo também foi observada. Uma pequena associação negativa entre as variáveis de investimentos nutricional (massa da gema, proteínas e lipídios) nos ovos e a presença de ajudantes foi observada, porém não foi significativa. Não houve associação entre o tamanho da ninhada, o IMC dos filhotes e o tamanho do grupo. O resultado da metaanálise indica, de forma geral, uma associação entre a presença de indivíduos extra e a redução de investimentos maternais, sem que a prole seja afetada. Assim, este estudo suporta a hipótese da redução de investimento maternal em espécies cooperativas.

It has been recently demonstrated that females can reduce their egg investment without incurring costs onto the developing embryos. This happens when females breed in the presence of helpers-at-the-nest that compensate for the egg nutrient reduction by bringing more food for the chicks. Using the southern lapwing (Vanellus chilensis) as the study subject, this dissertation tested the effects of the presence of extra individuals on maternal investment. Hence, to achieve this objective the study evaluated 4 hypotheses: (1) clutch size is larger in nests of groups than in nests of pairs, (2) the incubation period is reduced in group with extra individuals, (3) egg quality is reduced by the presence of helpers in the breeding unit, and (4) chicks of mothers with helpers have lower body mass index (BMI). The flexible meta-analysis was adapted to estimate the average effect size for the association between group size and maternal investment. The results of the meta-analysis indicate a negative association between the duration of the incubation period and group size. A negative association between egg volume and group size was also observed. A small negative association between egg nutritional investment variables (yolk, protein and lipid mass) and group size was observed, however these were not significant. There was no association between clutch size,…

Advisors/Committee Members: Regina Helena Ferraz Macedo, Miguel Angelo Marini, Glauco Machado, Maria Alice dos Santos Alves.

Subjects/Keywords: investimento maternal; cuidado parental; reprodução cooperativa; parental care; maternal investment; nutrients; nutrientes; ovos; ECOLOGIA; cooperative breeding; eggs

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Santos, E. d. S. A. d. (2009). Biologia reprodutiva de Vanellus chilensis (Aves: Charadriidae) : por que reproduzir em grupo?. (Thesis). Universidade de Brasília. Retrieved from http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5033

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Santos, Eduardo da Silva Alves dos. “Biologia reprodutiva de Vanellus chilensis (Aves: Charadriidae) : por que reproduzir em grupo?.” 2009. Thesis, Universidade de Brasília. Accessed March 07, 2021. http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5033.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Santos, Eduardo da Silva Alves dos. “Biologia reprodutiva de Vanellus chilensis (Aves: Charadriidae) : por que reproduzir em grupo?.” 2009. Web. 07 Mar 2021.

Vancouver:

Santos EdSAd. Biologia reprodutiva de Vanellus chilensis (Aves: Charadriidae) : por que reproduzir em grupo?. [Internet] [Thesis]. Universidade de Brasília; 2009. [cited 2021 Mar 07]. Available from: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5033.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Santos EdSAd. Biologia reprodutiva de Vanellus chilensis (Aves: Charadriidae) : por que reproduzir em grupo?. [Thesis]. Universidade de Brasília; 2009. Available from: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5033

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

McMaster University

17. Grieves, Leanne A. ACOUSTIC COMMUNICATION IN THE JOINT-NESTING SMOOTH-BILLED ANI, CROTOPHAGA ANI.

Degree: MSc, 2014, McMaster University

URL: http://hdl.handle.net/11375/14099

►

I studied acoustic and visual communication in the Smooth-billed Ani, a joint-nesting, cooperatively breeding cuckoo. I describe vocal repertoire of this species using both… (more)

Subjects/Keywords: aggressive signals; alarm signals; communication; cooperative breeding; Crotophaga ani; repertoire; Behavior and Ethology; Behavior and Ethology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Grieves, L. A. (2014). ACOUSTIC COMMUNICATION IN THE JOINT-NESTING SMOOTH-BILLED ANI, CROTOPHAGA ANI. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/14099

Chicago Manual of Style (16^th Edition):

Grieves, Leanne A. “ACOUSTIC COMMUNICATION IN THE JOINT-NESTING SMOOTH-BILLED ANI, CROTOPHAGA ANI.” 2014. Masters Thesis, McMaster University. Accessed March 07, 2021. http://hdl.handle.net/11375/14099.

MLA Handbook (7^th Edition):

Grieves, Leanne A. “ACOUSTIC COMMUNICATION IN THE JOINT-NESTING SMOOTH-BILLED ANI, CROTOPHAGA ANI.” 2014. Web. 07 Mar 2021.

Vancouver:

Grieves LA. ACOUSTIC COMMUNICATION IN THE JOINT-NESTING SMOOTH-BILLED ANI, CROTOPHAGA ANI. [Internet] [Masters thesis]. McMaster University; 2014. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11375/14099.

Council of Science Editors:

Grieves LA. ACOUSTIC COMMUNICATION IN THE JOINT-NESTING SMOOTH-BILLED ANI, CROTOPHAGA ANI. [Masters Thesis]. McMaster University; 2014. Available from: http://hdl.handle.net/11375/14099

Université Montpellier II

18. Paquet, Matthieu. Effet maternels et compromis évolutifs chez une espèce à reproduction coopérative, le Républicain social (Philetairus socius) : Maternal investment and life history trade-offs in a cooperative breeding bird, the Sociable weaver, Philetairus socius.

Degree: Docteur es, Evolution, écologie, ressources génétiques, paléontologie, 2013, Université Montpellier II

URL: http://www.theses.fr/2013MON20259

►

Maximiser le nombre de copies de gènes transmises aux générations suivantes implique une série de compromis. Chez les espèces à reproduction coopérative, des individus ne… (more)

▼

Maximiser le nombre de copies de gènes transmises aux générations suivantes implique une série de compromis. Chez les espèces à reproduction coopérative, des individus ne se reproduisent pas mais participent aux soins des jeunes d'autres individus reproducteurs. Ces assistants sont particulièrement intéressants dans le contexte des traits d'histoire de vie car ils forment un environnement prédictible favorable pour la reproduction, et leur présence peut aussi influencer les compromis évolutifs chez les reproducteurs. Un compromis évolutif majeur mais sous-étudié dans le cadre de la reproduction coopérative est l'allocation maternelle notamment via des effets maternels qui sont des modifications épigénétiques du phénotype de la descendance. Nous avons étudié l'existence d'effets maternels associés à la présence d'assistants et leurs possibles conséquences sur les femelles et leurs descendants chez un oiseau colonial et coopératif du sud de l'Afrique, le Républicain social Philetairus socius. Nos résultats montrent que les femelles pondent des œufs plus légers en présence d'assistants et que ces œufs sont moins concentrés en corticostérone et testostérone. Nos résultats montent aussi une plus grande probabilité de survie pour les femelles se reproduisant en groupe pouvant être en partie due à leur plus faible investissement dans les œufs. De plus, l'étude de la température dans les nids en fonction de la taille des groupes a permis de suggérer d'autres bénéfices pour les parents et assistants, en particulier via une réduction des coûts de thermorégulation qui pourrait aussi permettre de garder de l'énergie pour la survie. Pour comprendre les conséquences de la présence d'assistants et de l'allocation différentielle pour les poussins, une expérience d'adoption croisée a été réalisée. Elle a révélé que les œufs pondus par les femelles avec plus d'assistants produisent des poussins qui quémandent moins, montrant que des effets maternels pourraient influencer le comportement des poussins. Enfin nous avons étudié la survie des poussins après l'envol à l'aide d'analyses de captures recaptures et avons trouvé de manière surprenante que les poussins à l'envol ont une probabilité de survie plus faible lorsqu'ils sont élevés présence d'assistants. Ces résultats dans leur ensemble démontrent l'importance d'étudier les effets maternels chez les espèces coopératives et ouvrent de nombreuses perspectives de recherche sur les conflits familiaux et de compromis évolutifs associés à la présence d'assistants.

Maximizing of the number copies of genes that are transmitted to the next generations involves a series of tradeoffs. In cooperatively breeding species some sexually mature individuals do not breed but instead help other individuals to raise their offspring. These helpers are particularly interesting in a life history context as they create a predictably favorable breeding environment and their presence can thus influence evolutionary trade-offs. A major evolutionary trade-off that is often neglected in studies on cooperative…

Advisors/Committee Members: Doutrelant, Claire (thesis director), Covas, Rita (thesis director).

Subjects/Keywords: Reproduction coopérative; Compromis évolutifs; Effet maternels; Hormones; Oiseaux; Cooperative breeding; Life history trade-offs; Maternal effect; Hormones; Birds

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Paquet, M. (2013). Effet maternels et compromis évolutifs chez une espèce à reproduction coopérative, le Républicain social (Philetairus socius) : Maternal investment and life history trade-offs in a cooperative breeding bird, the Sociable weaver, Philetairus socius. (Doctoral Dissertation). Université Montpellier II. Retrieved from http://www.theses.fr/2013MON20259

Chicago Manual of Style (16^th Edition):

Paquet, Matthieu. “Effet maternels et compromis évolutifs chez une espèce à reproduction coopérative, le Républicain social (Philetairus socius) : Maternal investment and life history trade-offs in a cooperative breeding bird, the Sociable weaver, Philetairus socius.” 2013. Doctoral Dissertation, Université Montpellier II. Accessed March 07, 2021. http://www.theses.fr/2013MON20259.

MLA Handbook (7^th Edition):

Paquet, Matthieu. “Effet maternels et compromis évolutifs chez une espèce à reproduction coopérative, le Républicain social (Philetairus socius) : Maternal investment and life history trade-offs in a cooperative breeding bird, the Sociable weaver, Philetairus socius.” 2013. Web. 07 Mar 2021.

Vancouver:

Paquet M. Effet maternels et compromis évolutifs chez une espèce à reproduction coopérative, le Républicain social (Philetairus socius) : Maternal investment and life history trade-offs in a cooperative breeding bird, the Sociable weaver, Philetairus socius. [Internet] [Doctoral dissertation]. Université Montpellier II; 2013. [cited 2021 Mar 07]. Available from: http://www.theses.fr/2013MON20259.

Council of Science Editors:

Paquet M. Effet maternels et compromis évolutifs chez une espèce à reproduction coopérative, le Républicain social (Philetairus socius) : Maternal investment and life history trade-offs in a cooperative breeding bird, the Sociable weaver, Philetairus socius. [Doctoral Dissertation]. Université Montpellier II; 2013. Available from: http://www.theses.fr/2013MON20259

19. Vullioud, Philippe. Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis).

Degree: PhD, 2018, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/271131

► Large individual differences in cooperative contributions are common within animal societies such as cooperative breeders, where helpers care for offspring which are not their own.… (more)

▼ Large individual differences in cooperative contributions are common within animal societies such as cooperative breeders, where helpers care for offspring which are not their own. Understanding this variation has been a major focus in behavioural ecology and while evidence has shown that individuals are capable to adaptively adjust their cooperative behaviours, the physiological mechanisms underlying such adjustments remain poorly understood. Steroid hormones are prominent candidates to regulate cooperative behaviours due to their ability to integrate internal physiological state and environmental stimuli to produce an adaptive behavioural response. In this thesis, I investigate the effects of two steroid hormones, Cortisol (CORT) and Testosterone (T), in the regulation of cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). Because these hormones are susceptible to both modulate and be modulated by cooperative contributions, I experimentally tested both sides of this relationship. I show that, despite the absence of correlation between CORT and T and cooperative contributions, experimental increases of cooperative contributions elevate CORT levels, but not T (Chapter 3). Additionally, experimental increases of CORT levels in female helpers raised their cooperative contributions by more than one half demonstrating the regulatory effect of CORT on cooperative behaviours (Chapter 4). As breeding opportunities are likely to affect cooperative contributions and because T is a likely candidate to mediate a trade-off between future reproduction and current cooperation, I tested the effects of experimental increases of T levels in female helpers. I show that such elevations have no measurable effect of aggression, dispersal tendencies (both important to attain a breeding position) or cooperative contributions (Chapter 5). Taken together, the results of this thesis demonstrate that CORT can both respond to and regulate cooperative behaviours and suggest that this hormone may play a major role in the adaptive regulation of cooperative behaviour.

Subjects/Keywords: Hormones; Cooperation; Mole-rat; Cooperative breeding

…particularly striking in the context of cooperative breeding (Clutton-Brock et al., 2001a; Hodge… …future breeding, by decreasing investments into costly cooperative activities and by favouring… …investments into traits susceptible to facilitate future breeding. In cooperative breeders… …1 1.1 Individual differences in cooperative behaviours: evolutionary explanations… …2 1.2 Individual differences in cooperative behaviours: physiological explanations…

10 more images…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vullioud, P. (2018). Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/271131

Chicago Manual of Style (16^th Edition):

Vullioud, Philippe. “Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis).” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 07, 2021. https://www.repository.cam.ac.uk/handle/1810/271131.

MLA Handbook (7^th Edition):

Vullioud, Philippe. “Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis).” 2018. Web. 07 Mar 2021.

Vancouver:

Vullioud P. Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 07]. Available from: https://www.repository.cam.ac.uk/handle/1810/271131.

Council of Science Editors:

Vullioud P. Hormones and cooperative behaviours in the Damaraland mole-rat (Fukomys damarensis). [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://www.repository.cam.ac.uk/handle/1810/271131

University of Melbourne

20. van Asten, Timon. Coping style and group dynamics in a cooperative breeder, the superb fairy-wren (Malurus cyaneus).

Degree: 2016, University of Melbourne

URL: http://hdl.handle.net/11343/112434

► Group dynamics – the movements and interactions of individuals within and between groups – are known to play an important role in influencing key life… (more)

▼ Group dynamics – the movements and interactions of individuals within and between groups – are known to play an important role in influencing key life history events such as dispersal and reproduction. Nevertheless, there is considerable variation in conspecific interactions and life history strategies that remains poorly understood. Over recent years, a growing number of studies have shown that individual animals consistently differ in their behaviour over time and across contexts. This phenomenon is typically referred to as ‘animal personality’ or ‘temperament’ and evidence is accumulating that these behavioural differences can help to explain the form and expression of life-history traits. However, currently most evidence for a relationship between personality and life-history traits comes from theoretical or captive studies. There is a need to verify these ideas under natural circumstances, to assess the true impact of personality on individual life-histories and fitness. In this thesis I investigated whether and how individual coping style (a narrow-sense proxy of personality) is related to the performance of different tasks during breeding and to individual natal dispersal strategies in a wild population of cooperatively breeding superb fairy-wrens (Malurus cyaneus). In this species, males can disperse at any point in their life and help their parents raise successive broods while still at home, while most females disperse in their first year. By conducting behavioural assays, of fairy-wren behaviours (boldness, exploration, aggression) under controlled conditions, I first established that individual fairy-wrens in my population indeed show distinct coping styles. I then tested whether individual differences in coping style where related to contributions to key tasks within social groups, specifically alloparental care (nestling feeding behaviour), territory defence (responses to simulated conspecific territorial intrusions) and nest defence (responses to a novel object at active nests). To test for relationships between coping style and dispersal outcomes, I experimentally created temporary breeding vacancies by removing male breeders from territories without helpers to prompt dispersal by a male helper from one of the neighbouring territories into the vacant breeding position. Finally, I used data on natural cases of male and female dispersal, collected over six consecutive years of population monitoring to test whether individual dispersal strategies were related to coping style. My findings suggest that coping style has much less influence on group dynamics than suggested by theoretical and captive studies. First, cooperative division of tasks such as offspring provisioning and nest defence did not occur during breeding, nor did individuals consistently differ in the amount of help provided. Coping style did not affect feeding rate or response to a simulated conspecific intruder, and only played a role during inspection of a novel object near the nest when more than one bird was present: birds with…

Subjects/Keywords: behaviour; cooperative breeding; coping style; animal personality; dispersal; sociality; philopatry; population dynamics; fairy-wrens; Malurus cyaneus; exploration

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

van Asten, T. (2016). Coping style and group dynamics in a cooperative breeder, the superb fairy-wren (Malurus cyaneus). (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/112434

Chicago Manual of Style (16^th Edition):

van Asten, Timon. “Coping style and group dynamics in a cooperative breeder, the superb fairy-wren (Malurus cyaneus).” 2016. Doctoral Dissertation, University of Melbourne. Accessed March 07, 2021. http://hdl.handle.net/11343/112434.

MLA Handbook (7^th Edition):

van Asten, Timon. “Coping style and group dynamics in a cooperative breeder, the superb fairy-wren (Malurus cyaneus).” 2016. Web. 07 Mar 2021.

Vancouver:

van Asten T. Coping style and group dynamics in a cooperative breeder, the superb fairy-wren (Malurus cyaneus). [Internet] [Doctoral dissertation]. University of Melbourne; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11343/112434.

Council of Science Editors:

van Asten T. Coping style and group dynamics in a cooperative breeder, the superb fairy-wren (Malurus cyaneus). [Doctoral Dissertation]. University of Melbourne; 2016. Available from: http://hdl.handle.net/11343/112434

University of Maryland

21. Henry, MaLinda Dawn. Proximate mechanisms and ultimate causes of female reproductive skew in cooperatively breeding golden lion tamarins, Leontopithecus rosalia.

Degree: Behavior, Ecology, Evolution and Systematics, 2011, University of Maryland

URL: http://hdl.handle.net/1903/11654

► Many cooperatively breeding species exhibit high reproductive skew. Delayed dispersal and cooperative breeding may have evolved as a consequence of the limits ecological constraints place… (more)

▼ Many cooperatively breeding species exhibit high reproductive skew. Delayed dispersal and cooperative breeding may have evolved as a consequence of the limits ecological constraints place on independent breeding. When simultaneous breeding by multiple females reduces the survival of the dominant's offspring, selection should favor dominants able to control subordinate reproduction. Monopolization of reproduction by dominant group members by means of suppression of subordinate reproduction has been documented in several taxa of cooperative breeders. In this dissertation I examine the proximate mechanisms and ultimate causes of reproductive skew in cooperatively breeding golden lion tamarins (Leontopithecus rosalia). In chapter one I combine data from phenological transects with hormonal evaluation of reproductive status to test whether caloric availability limits reproduction by female tamarins. Caloric availability was sufficient to support not only pregnancy polygyny in 83% of tamarin groups, but also the additional group members resulting from multiple litters. The super abundance of calories and the timing of births suggested that competition for allocare rather than for food resources may be the selective force limiting reproduction by subordinate females. In my second chapter I combine hormonal and demographic data to explain reproductive skew in terms of the costs and benefits to subordinate fitness under existing social circumstances. Subordinate females older than 18 months of age ovulated while residing within their natal group, but conceptions were delayed one to two years following reproductive maturity. The likelihood of successful reproduction by a subordinate female doubled with each year of age of the dominant female. Conceptions under incestuous mating conditions were rare (7 of 37 pregnancies). My results provide support for the hypothesis that subordinate adult females under three years old exercise reproductive self-restraint. I speculate that the threat of being evicted from the group and inbreeding avoidance are sufficient to delay attempts at reproduction by young subordinates without the need for costly fighting with the dominant female. In my third chapter I test whether reproduction by subordinate adult female tamarins is limited by dominant females who have incomplete control (incomplete control model, ICM) or complete control (optimal skew model, OSM) over subordinate reproduction. I combine hormonal data with group demography and caloric availability to determine variables useful in predicting a successful pregnancy to a subordinate female. Whereas subordinate females younger than 2.5 years of age ovulated but did not conceive, all females older than 3.9 years of age became pregnant. Reproduction in subordinate adult females was not limited by hormonal suppression of ovulation or conception, but by the failure of 7 of 11 pregnancies to produce live offspring. The likelihood of reproductive success increased 1.7 times with each additional group member. My results suggest… Advisors/Committee Members: Dietz, James M (advisor).

Subjects/Keywords: Endocrinology; Ecology; Behavioral Sciences; cooperative breeding; ecological constraints; incomplete dominant control; polygyny; reproductive skew; subordinate restraint

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Henry, M. D. (2011). Proximate mechanisms and ultimate causes of female reproductive skew in cooperatively breeding golden lion tamarins, Leontopithecus rosalia. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/11654

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Henry, MaLinda Dawn. “Proximate mechanisms and ultimate causes of female reproductive skew in cooperatively breeding golden lion tamarins, Leontopithecus rosalia.” 2011. Thesis, University of Maryland. Accessed March 07, 2021. http://hdl.handle.net/1903/11654.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Henry, MaLinda Dawn. “Proximate mechanisms and ultimate causes of female reproductive skew in cooperatively breeding golden lion tamarins, Leontopithecus rosalia.” 2011. Web. 07 Mar 2021.

Vancouver:

Henry MD. Proximate mechanisms and ultimate causes of female reproductive skew in cooperatively breeding golden lion tamarins, Leontopithecus rosalia. [Internet] [Thesis]. University of Maryland; 2011. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1903/11654.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Henry MD. Proximate mechanisms and ultimate causes of female reproductive skew in cooperatively breeding golden lion tamarins, Leontopithecus rosalia. [Thesis]. University of Maryland; 2011. Available from: http://hdl.handle.net/1903/11654

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

22. Malueg, Amanda Leah. Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities.

Degree: MS, Biology, 2007, Virginia Tech

URL: http://hdl.handle.net/10919/35091

► The measurement of stress hormone levels in wild free-living animals is becoming an increasingly effective method for examining proximate mechanisms of animal behavior and the… (more)

Subjects/Keywords: stress; corticosterone; cooperative breeding; human disturbance; Picoides borealis

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Malueg, A. L. (2007). Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/35091

Chicago Manual of Style (16^th Edition):

Malueg, Amanda Leah. “Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities.” 2007. Masters Thesis, Virginia Tech. Accessed March 07, 2021. http://hdl.handle.net/10919/35091.

MLA Handbook (7^th Edition):

Malueg, Amanda Leah. “Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities.” 2007. Web. 07 Mar 2021.

Vancouver:

Malueg AL. Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities. [Internet] [Masters thesis]. Virginia Tech; 2007. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10919/35091.

Council of Science Editors:

Malueg AL. Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities. [Masters Thesis]. Virginia Tech; 2007. Available from: http://hdl.handle.net/10919/35091

Virginia Tech

23. Perkins, Jennifer L. Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior – AND – New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker.

Degree: MS, Biological Sciences, 2006, Virginia Tech

URL: http://hdl.handle.net/10919/35054

► The red-cockaded woodpecker (Picoides borealis) is a federally endangered species. As such, populations need to be increased in order to achieve recovery goals outlined by… (more)

Subjects/Keywords: pioneering; territory creation; human impacts; cooperative breeding; budding

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Perkins, J. L. (2006). Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior – AND – New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/35054

Chicago Manual of Style (16^th Edition):

Perkins, Jennifer L. “Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior – AND – New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker.” 2006. Masters Thesis, Virginia Tech. Accessed March 07, 2021. http://hdl.handle.net/10919/35054.

MLA Handbook (7^th Edition):

Perkins, Jennifer L. “Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior – AND – New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker.” 2006. Web. 07 Mar 2021.

Vancouver:

Perkins JL. Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior – AND – New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker. [Internet] [Masters thesis]. Virginia Tech; 2006. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10919/35054.

Council of Science Editors:

Perkins JL. Effects of Military Training Activity on Red-cockaded Woodpecker Demography and Behavior – AND – New Territory Formation in the Cooperatively Breeding Red-cockaded Woodpecker. [Masters Thesis]. Virginia Tech; 2006. Available from: http://hdl.handle.net/10919/35054

University of Cambridge

24. Thorley, Jack. The life history of Damaraland mole-rats, Fukomys damarensis : growth, ageing and behaviour.

Degree: PhD, 2018, University of Cambridge

URL: https://doi.org/10.17863/CAM.32289 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763635

► The social mole-rats have often been typecast as extreme examples of mammalian sociality. With their pronounced reproductive skew, status-related contrasts in lifespan and morphology, and… (more)

▼ The social mole-rats have often been typecast as extreme examples of mammalian sociality. With their pronounced reproductive skew, status-related contrasts in lifespan and morphology, and the suggestion of a division of labour amongst helpers, mole-rat societies have repeatedly been likened to the structurally complex societies of some eusocial insects. However, because few studies of mole-rats have quantified individual variation in growth and behaviour across long periods of development, it has remained unclear the extent to which mole-rat societies, and the features of individuals within them, should be considered unique amongst social vertebrates. In this thesis, I examine life history variation in Damaraland mole-rats Fukomys damarensis from three perspectives- growth, behaviour, and ageing- to explore how individual developmental trajectories contribute to, and are influenced by, the structure of mole-rat societies. First, I use a large longitudinal dataset to test for the presence of behavioural specialisation in non-breeding mole-rat helpers. I find no indication of individual specialisation in cooperative activities. Instead, individual differences in helping behaviour are largely the result of age-related changes in the extent to which individuals commit to all forms of helping (Chapter 3); refuting the notion of helper castes. I then focus on the variation in growth across non-breeders, developing a novel biphasic model to accurately quantify sex differences in growth and explore the influence of social effects on growth trajectories (Chapter 4). Despite the proposition of intense intrasexual competition in mole-rat societies, there was no clear signature of sex-specific competition on helper growth trajectories. A more conspicuous form of socially-mediated growth in mole-rats is the secondary growth spurt displayed by females that have acquired the dominant breeding position, causing them to become larger and more elongated. By experimentally controlling reproduction in age-matched siblings, I show that rather than being stimulated by the removal from reproductive suppression, this adaptive morphological divergence is achieved through a lengthening of the lumbar vertebrae when breeding is commenced (Chapter 5). With contrasts in size and shape following the acquisition of the breeding role, this status-related growth pattern shares similarities with growth in naked mole-rats and other social vertebrates. Breeders also show a twofold greater lifespan than non-breeders in Fukomys mole-rats, prompting the suggestion that the transition to dominance also sets individuals onto a slower ageing trajectory. To date, there is little evidence to support a physiological basis to lifespan extension in breeders. This assertion is bolstered by the absence of longer telomeres or slower rates of telomere attrition in breeding females compared to non-breeding females residing in groups (Chapter 6), each of which might be expected if breeders age more slowly. I argue that previous studies exploring status-related ageing in…

Subjects/Keywords: 599.35; Cooperative breeding; ageing; mole-rats; Sociality; Eusociality; telomere; growth; biphasic growth; rodents; subterranean; Morphological divergence; mammal

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Thorley, J. (2018). The life history of Damaraland mole-rats, Fukomys damarensis : growth, ageing and behaviour. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.32289 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763635

Chicago Manual of Style (16^th Edition):

Thorley, Jack. “The life history of Damaraland mole-rats, Fukomys damarensis : growth, ageing and behaviour.” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 07, 2021. https://doi.org/10.17863/CAM.32289 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763635.

MLA Handbook (7^th Edition):

Thorley, Jack. “The life history of Damaraland mole-rats, Fukomys damarensis : growth, ageing and behaviour.” 2018. Web. 07 Mar 2021.

Vancouver:

Thorley J. The life history of Damaraland mole-rats, Fukomys damarensis : growth, ageing and behaviour. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 07]. Available from: https://doi.org/10.17863/CAM.32289 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763635.

Council of Science Editors:

Thorley J. The life history of Damaraland mole-rats, Fukomys damarensis : growth, ageing and behaviour. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://doi.org/10.17863/CAM.32289 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763635

Universidade do Rio Grande do Norte

25. Cutrim, Fernanda Helena Ribeiro. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens .

Degree: 2007, Universidade do Rio Grande do Norte

URL: http://repositorio.ufrn.br/handle/123456789/17383

► The Callitrichidae family presents cooperative breeding, where breeders and non breeders take care of the offspring. The aspects of care analyzed in this study were… (more)

▼ The Callitrichidae family presents cooperative breeding, where breeders and non breeders take care of the offspring. The aspects of care analyzed in this study were infant carrying, supervision, proximity and food transfer. Three sets of infants from two wild groups of Callithrix jacchus were studied in the environments of Caatinga (Assu group) and Atlantic Forest (Jundiaí group). The methods used in the study were instantaneous focal sampling (infant carrying, supervision and proximity) and continuous focal sampling (food transfer). In the two sets observed in Assu group, the father carried and transferred food to infants more than the rest of the group. The biggest contribution in supervision was from the father and from another adult male. The members that remained in proximity to the infants in both groups were the younger in the groups (juveniles and sub-adults). In the Jundiaí group, the father and the adult male helper of the group were the main caregivers; one of the sub-adult females was responsible for supervision of the infants. With the disappearance of the reproductive male and one of the sub-adults females in 3º month of infants life, the care was redistributed and the only adult male left in the group was the animal that contributed more in provisioning of the infant. In the Assu group, there were adult females in its composition which were involved in agonistic interactions with breeders and adult males, and seemed to influence their low participation in care. Food transfer initiates early in the development of the infants, as a way to encourage nutritional independence. Different types of food transfer (active food transfer, food steal, food steal attempt, passive food transfer and food handling) were observed in the study and frequency of each one varied with developmental phase and tolerance by the members. One relevant data of the study was the presence of active food transfer in Assu group, since in literature there are very few registers of this type of transfer for this species. It is important that groups from distinct environments and composition be studied for a better understanding of the dynamics of infants development Advisors/Committee Members: Miranda, Maria de Fátima Arruda de (advisor), CPF:09453997404 (advisor), http://lattes.cnpq.br/4654421846443562 (advisor).

Subjects/Keywords: Callithrix jacchus; Cuidado cooperativo; Infante; Desenvolvimento; Callithrix jacchus; Cooperative breeding; Infant; Development

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cutrim, F. H. R. (2007). Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens . (Masters Thesis). Universidade do Rio Grande do Norte. Retrieved from http://repositorio.ufrn.br/handle/123456789/17383

Chicago Manual of Style (16^th Edition):

Cutrim, Fernanda Helena Ribeiro. “Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens .” 2007. Masters Thesis, Universidade do Rio Grande do Norte. Accessed March 07, 2021. http://repositorio.ufrn.br/handle/123456789/17383.

MLA Handbook (7^th Edition):

Cutrim, Fernanda Helena Ribeiro. “Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens .” 2007. Web. 07 Mar 2021.

Vancouver:

Cutrim FHR. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens . [Internet] [Masters thesis]. Universidade do Rio Grande do Norte; 2007. [cited 2021 Mar 07]. Available from: http://repositorio.ufrn.br/handle/123456789/17383.

Council of Science Editors:

Cutrim FHR. Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens . [Masters Thesis]. Universidade do Rio Grande do Norte; 2007. Available from: http://repositorio.ufrn.br/handle/123456789/17383

26. Bluher, Sarah. Demographic History and Population Structure of Polistes fuscatus Paper Wasps.

Degree: M.S., Neurobiology and Behavior, Neurobiology and Behavior, 2018, Cornell University

URL: http://hdl.handle.net/1813/59545

► Limited dispersal and cooperation are predicted to coevolve in cooperatively breeding systems. In Polistes paper wasps, mark-recapture studies and genetic analyses have shown that both… (more)

Subjects/Keywords: Cooperative breeding; Dispersal; Population structure; Social insects; Genetics; Ecology; Bioinformatics

…cooperative breeding, dispersal and population structure may be expected to differ between… …cooperative breeding is linked to fine-scale population structure. However, the methods employed in… …structure is unrelated to the presence or degree of cooperative breeding. Future analyses will… …species of Polistes exhibiting varying degrees of cooperative breeding behavior. Sex-biased… …x5B;22] Ben J Hatchwell. The evolution of cooperative breeding in birds: kinship…

1 more image…

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bluher, S. (2018). Demographic History and Population Structure of Polistes fuscatus Paper Wasps. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/59545

Chicago Manual of Style (16^th Edition):

Bluher, Sarah. “Demographic History and Population Structure of Polistes fuscatus Paper Wasps.” 2018. Masters Thesis, Cornell University. Accessed March 07, 2021. http://hdl.handle.net/1813/59545.

MLA Handbook (7^th Edition):

Bluher, Sarah. “Demographic History and Population Structure of Polistes fuscatus Paper Wasps.” 2018. Web. 07 Mar 2021.

Vancouver:

Bluher S. Demographic History and Population Structure of Polistes fuscatus Paper Wasps. [Internet] [Masters thesis]. Cornell University; 2018. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1813/59545.

Council of Science Editors:

Bluher S. Demographic History and Population Structure of Polistes fuscatus Paper Wasps. [Masters Thesis]. Cornell University; 2018. Available from: http://hdl.handle.net/1813/59545

Universidade de Brasília

27. Sheila Silva Rodrigues. Biologia e sucesso reprodutivo de mimus saturninus (aves: mimidae) no cerrado.

Degree: 2009, Universidade de Brasília

URL: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5415

►

O Sabiá-do-campo, Mimus saturninus (Mimidae) é bastante comum em cerrados, campos, pastos com árvores e arbustos esparsos, além de ser freqüentemente observado em ambientes urbanos.… (more)

▼

O Sabiá-do-campo, Mimus saturninus (Mimidae) é bastante comum em cerrados, campos, pastos com árvores e arbustos esparsos, além de ser freqüentemente observado em ambientes urbanos. O presente trabalho teve o objetivo de estudar aspectos da sua biologia e sucesso reprodutivo em uma área natural de cerrado. A coleta de dados ocorreu na Estação Ecológica de Águas Emendadas (ESECAE) entre os anos de 2003 e 2008. Localizamos 64 ninhos da espécie para os quais, foi possível determinar o destino de 55 deles. Foram utilizados 45 ninhos para análise do sucesso reprodutivo e sobrevivência dos ninhos. A maioria dos ninhos foi encontrada em Cerrado ralo (50%). A incubação é assincrônica e a reprodução ocorre de agosto a dezembro. O ninho é em formato de tigela, constituído de gravetos, confeccionado principalmente em arbustos de Davilla elliptica (Dilleniaceae). A altura média do ninho em relação ao solo foi de 1,3 0,6 m. O tamanho da ninhada variou de um a seis ovos, com predominância de ninhadas de três ovos. Tanto o período médio de incubação como o de permanência dos ninhegos no ninho foram estimados em 14 0,27 dias. Encontramos apenas um ninho parasitado por Chopim, Molothrus bonariensis. O sucesso reprodutivo aparente, o sucesso de eclosão dos ovos e o sucesso estimado pelo método de Mayfield foram de 54,5; 40,5 e 54,6 %, respectivamente. A predação foi atribuída como a principal causa do fracasso reprodutivo (88%). Dentre os ninhos predados, 86,4% foram perdidos na fase de ninhego e 13,6% na de incubação. A infestação dos ninhegos por larvas de dípteras foi freqüente, porém nenhuma perda foi atribuída a esse fator. A probabilidade de sobrevivência dos ninhos, modelada pelo método de exposição logística, mostra que a sobrevivência pode variar de acordo com a idade do ninho e o tamanho da ninhada. Ninhadas maiores apresentam sobrevivência diária relativamente maior do que ninhadas pequenas. Ninhos no fim da fase de incubação sofrem um decréscimo na sobrevivência diária e as menores probabilidades de sobrevivência foram encontradas nos primeiros dias da fase de ninhego seguidas por um aumento no fim do mesmo período. A sobrevivência diária dos ninhos não foi afetada pelas fitofisionomias escolhidas para a nidificação e ao longo da estação reprodutiva.

The Chalk-browed Mockingbird, Mimus saturninus (Mimidae) is a very common bird in cerrados, grasslands, and pasturelands with scattered trees or shrubs, also occurring in urban environments. Here I studied aspects of its breeding biology and success in a natural cerrado. Data was collected at Estação Ecológica de Águas Emendadas (ESECAE) from 2003 to 2008. I monitored 64 nests of which 55 had a known fate. I used 45 nests for the reproductive success and nest survival analyses. Most nests (50%) were found at open cerrado. Incubation was asynchronic and nesting lasted from August to December. Nests were an open-cup built with twigs usually on a Davilla elliptica (Dilleniaceae) shrub. Mean nest height above the ground was 1.3 0.6 m. Clutch size was invariably of three, but…

Advisors/Committee Members: Miguel Angelo Marini, Mauro Pichorim, Ludmilla Moura de Souza Aguiar.

Subjects/Keywords: nest survival; reprodução cooperativa; cooperative breeding; Program MARK; história de vida; CIENCIAS BIOLOGICAS; chalk-browed mockingbird; life history; sabiá-do-campo; Programa MARK; sobrevivência de ninhos

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rodrigues, S. S. (2009). Biologia e sucesso reprodutivo de mimus saturninus (aves: mimidae) no cerrado. (Thesis). Universidade de Brasília. Retrieved from http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5415

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rodrigues, Sheila Silva. “Biologia e sucesso reprodutivo de mimus saturninus (aves: mimidae) no cerrado.” 2009. Thesis, Universidade de Brasília. Accessed March 07, 2021. http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5415.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rodrigues, Sheila Silva. “Biologia e sucesso reprodutivo de mimus saturninus (aves: mimidae) no cerrado.” 2009. Web. 07 Mar 2021.

Vancouver:

Rodrigues SS. Biologia e sucesso reprodutivo de mimus saturninus (aves: mimidae) no cerrado. [Internet] [Thesis]. Universidade de Brasília; 2009. [cited 2021 Mar 07]. Available from: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5415.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rodrigues SS. Biologia e sucesso reprodutivo de mimus saturninus (aves: mimidae) no cerrado. [Thesis]. Universidade de Brasília; 2009. Available from: http://bdtd.bce.unb.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=5415

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Berger, Vérane. Senescence and sociality : the example of the alpine marmot (Marmota marmota) : Sénescence et socialité : l'exemple de la marmotte alpine (Marmota marmota).

Degree: Docteur es, Écologie évolutive, 2015, Université Claude Bernard – Lyon I

URL: http://www.theses.fr/2015LYO10257

►

Quels sont les facteurs qui peuvent retarder ou accélérer la sénescence? Les chercheurs tentent d'y apporter des réponses à différents niveaux moléculaires, cellulaires et également… (more)

▼

Quels sont les facteurs qui peuvent retarder ou accélérer la sénescence? Les chercheurs tentent d'y apporter des réponses à différents niveaux moléculaires, cellulaires et également au niveau des traits d'histoire de vie. Tl est établi que différents facteurs ont un impact significatif sur les patrons de sénescence tels que le continuum lent-rapide, la sélection sexuelle, ou encore la disponibilité en ressources. De façon surprenante, peu d'intérêt a été porté sur l'influence de la socialité sur les patrons de sénescence. L'objet de cette thèse est de combler cette lacune et d'étudier l'influence de la socialité sur la sénescence grâce à un suivi exceptionnel d'une population de marmottes alpines (Marmota Marmota), mammifère hautement social et longévif. En effet, cette espèce est organisée en groupes familiaux, composés d'un couple dominant reproducteur socialement monogame despotique, et de subordonnés des deux sexes. La marmotte alpine pratique l'élevage coopératif. En effet, les subordonnés mâles participent à l'élevage des jeunes, ils sont aussi appelés helpers. Nous avons mis en évidence une sénescence de la taille de portée à partir de 10 ans et du succès reproducteur vers 8 ans chez les femelles dominantes et une sénescence de survie à partir de 6 ans chez les dominants mâles et femelles. Nous avons montré que le nombre de helpers durant l'année de naissance et durant la vie adulte étaient indépendants et augmentaient additivement le succès reproducteur sur toute la vie et la longévité des femelles dominantes. Nous avons apporté la preuve que les helpers présents l'année de naissance avaient une influence sexe-spécifique sur les patrons de sénescence de survie des dominants. En effet, les mâles nés avec des helpers vieillissaient plus vite et plus tôt que ceux nés sans helpers. Les femelles ayant bénéficié de helpers l'année de naissance présentaient une sénescence tardive et moins intense que celles sans helpers. Également, les helpers présents durant la vie adulte retardait la sénescence des dominants des deux sexes et diminuaient son intensité. Les coûts et bénéfices liés à l'élevage coopératif expliquent en partie la variabilité de la sénescence de survie chez la marmotte alpine. Pour finir, nous nous sommes placés à l'échelle interspécifique et nous avons montré que la socialité chez les mammifères retardait l'âge de début de sénescence

What are factors that can delay or accelerate senescence? Researchers are seeking these factors at molecular, cellular and life history traits level. Recent studies have firmly showed that the slow-fast continuum, sexual selection and food availability are factors shaping variability in senescence patterns. Surprisingly, the influence of sociality on senescence has been less investigated. The aim of this thesis is to fill this gap and to study the influence of sociality on senescence thanks to an extensive dataset spanning 25 years of study on free-ranging Alpine marmots (Marmota Marmota), a long-lived and highly social mammal. Alpine marmots live in family groups…

Advisors/Committee Members: Allainé, Dominique (thesis director), Gaillard, Jean-Michel (thesis director).

Subjects/Keywords: Vieillissement; Trait d'histoire de vie; Socialité; Marmota marmota; Élevage coopératif; Helpers; Ageing; Life history trait; Sociality; Marmota marmota; Cooperative breeding; Helpers; 577

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Berger, V. (2015). Senescence and sociality : the example of the alpine marmot (Marmota marmota) : Sénescence et socialité : l'exemple de la marmotte alpine (Marmota marmota). (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2015LYO10257

Chicago Manual of Style (16^th Edition):

Berger, Vérane. “Senescence and sociality : the example of the alpine marmot (Marmota marmota) : Sénescence et socialité : l'exemple de la marmotte alpine (Marmota marmota).” 2015. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed March 07, 2021. http://www.theses.fr/2015LYO10257.

MLA Handbook (7^th Edition):

Berger, Vérane. “Senescence and sociality : the example of the alpine marmot (Marmota marmota) : Sénescence et socialité : l'exemple de la marmotte alpine (Marmota marmota).” 2015. Web. 07 Mar 2021.

Vancouver:

Berger V. Senescence and sociality : the example of the alpine marmot (Marmota marmota) : Sénescence et socialité : l'exemple de la marmotte alpine (Marmota marmota). [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2015. [cited 2021 Mar 07]. Available from: http://www.theses.fr/2015LYO10257.

Council of Science Editors:

Berger V. Senescence and sociality : the example of the alpine marmot (Marmota marmota) : Sénescence et socialité : l'exemple de la marmotte alpine (Marmota marmota). [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2015. Available from: http://www.theses.fr/2015LYO10257

Macquarie University

29. Keynan, Oded. Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian babbler (Turdoides squamiceps).

Degree: 2015, Macquarie University

URL: http://hdl.handle.net/1959.14/1055938

►

Thesis by publication.

"A dissertation submitted to Macquarie University in application for the degree of Doctor of Philosophy November 2014".

1. Introduction – 2. General… (more)

▼

Thesis by publication.

"A dissertation submitted to Macquarie University in application for the degree of Doctor of Philosophy November 2014".

1. Introduction – 2. General methods – 3. Social foraging strategies and acquisition of novel foraging skills in cooperatively-breeding Arabian babblers – 4. Task-dependent differences in innovation abilities by subordinate and dominant wild Arabian babblers – 5. Causes of variation in dominance acquisition, tenure, and lifetime reproductive success in a cooperatively breeding bird – 6. Long-term analysis of social and environmental influences on group dynamics in a cooperative breeder – 7. Long-term population analysis reveals the presence of group and demographic Allee effects on a cooperatively breeding bird species – 8. General discussion – References – Appendices.

Cooperative breeding is a social system in which individuals help care for young that are not their own. Considerable research has found that cooperation can result in a number of benefits for group members, including enhanced reproductive success and greater longevity. These benefits lead to the possibility that the social structure of the group an individual comes from may have important long-term fitness consequences. However, little is known about the relative importance of social and environmental factors on individual fitness traits and group dynamics in the long-term in cooperatively breeding species. Thus, long-term studies on how social and environmental factors influence the costs and benefits of cooperative behaviour are of extreme importance. In this thesis I explore how social and environmental factors influences the individual, the group and the population in cooperatively breeding Arabian babblers (Turdoides squamiceps). I did that by (a) experimentally investigating the factors influencing individual foraging strategies and innovative behaviour, (b) analysing a long-term database to study the effect of social and environmental factors on individual fitness traits and group dynamics, and (c) determining whether inverse density dependence (Allee effects) occurs at both the group and population level. I found that dominant and subordinate individuals differ in both foraging and cognitive strategies, and that novel foraging skills may be socially transmitted, outlining an important benefit of group-living. I also found that group size and reproductive competition significantly affected reproductive success and group dynamics, suggesting that social factors are important influences on both individual fitness and group demography. Finally, I found the existence of both group and demographic Allee effects in the study population, which represents an important consideration for the management and protection of cooperatively breeding species. These findings provides novel approaches that may benefit further studies on individual fitness and group dynamics in cooperative breeders.

1 online resource (215 pages) colour illustrations, colour map

Advisors/Committee Members: Macquarie University. Department of Biological Sciences.

Subjects/Keywords: Timaliidae – Reproduction; Timaliidae – Behavior; Turdoides – Reproduction; Turdoides – Behavior; Timaliidae – Ecology; Turdoides – Ecology; Turdoides squamiceps; Arabian babbler; Cooperative breeding; innovation; social learning; long term data; life history; Allee effect; group dynamics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Keynan, O. (2015). Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian babbler (Turdoides squamiceps). (Doctoral Dissertation). Macquarie University. Retrieved from http://hdl.handle.net/1959.14/1055938

Chicago Manual of Style (16^th Edition):

Keynan, Oded. “Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian babbler (Turdoides squamiceps).” 2015. Doctoral Dissertation, Macquarie University. Accessed March 07, 2021. http://hdl.handle.net/1959.14/1055938.

MLA Handbook (7^th Edition):

Keynan, Oded. “Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian babbler (Turdoides squamiceps).” 2015. Web. 07 Mar 2021.

Vancouver:

Keynan O. Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian babbler (Turdoides squamiceps). [Internet] [Doctoral dissertation]. Macquarie University; 2015. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1959.14/1055938.

Council of Science Editors:

Keynan O. Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian babbler (Turdoides squamiceps). [Doctoral Dissertation]. Macquarie University; 2015. Available from: http://hdl.handle.net/1959.14/1055938

University of Cambridge

30. English, Sinéad. Individual variation in cooperative behaviour in meerkats.

Degree: PhD, 2010, University of Cambridge

URL: https://doi.org/10.17863/CAM.16392 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541737

► Individual variation in cooperation is a striking yet poorly understood feature of many animal societies, particularly in cooperative breeders where individuals assist in the care… (more)

▼ Individual variation in cooperation is a striking yet poorly understood feature of many animal societies, particularly in cooperative breeders where individuals assist in the care of young that are not their own. While previous research on these systems has emphasised the plasticity of helping and how it varies with current environmental and social conditions, in this dissertation I examine how individual variation is constrained and influenced by trade-offs with other behaviours and experiences in early life. I demonstrate that variation in cooperative pup care (babysitting and provisioning) is consistent within individuals over time (Chapter 3). Provisioning is more consistent than babysitting, although the two behaviours are highly correlated within individuals. I then focus on the variation in helping that remains once current factors, such as condition, group size and food availability, are taken into account. In Chapter 4, I explore the possibility that variation in helping can be explained by personality, or consistency in behavioural traits such as exploration or risk-taking. I find little evidence for consistent individual differences in field measures of personality traits, however, with such behaviours instead being group-specific. Early social experiences are known to have important and lasting effects on later fitness and behaviour: in Chapter 5, I demonstrate that, in female meerkats only, growing up in a group with more helpers is correlated with reduced cooperation later in life. This result suggests the importance of future fitness in influencing current cooperative behaviour, as females raised in larger groups are more likely to attain dominance. Finally, I examine the extent to which vocal communication between carers and young is influenced by variation in contributions to cooperation. Females are more sensitive to increased begging rate (Chapter 6), which reflects general sex differences in cooperative behaviour. Carers modify their vocalizations but not their foraging behaviour in the presence of pups, and the way in which they vocalize during provisioning events suggests these calls serve to increase efficiency of prey transfer (Chapter 7).

Subjects/Keywords: 591.5; Cooperative breeding; Individual variation; Meerkats; Personality; Communication; l care

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

English, S. (2010). Individual variation in cooperative behaviour in meerkats. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.16392 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541737

Chicago Manual of Style (16^th Edition):

English, Sinéad. “Individual variation in cooperative behaviour in meerkats.” 2010. Doctoral Dissertation, University of Cambridge. Accessed March 07, 2021. https://doi.org/10.17863/CAM.16392 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541737.

MLA Handbook (7^th Edition):

English, Sinéad. “Individual variation in cooperative behaviour in meerkats.” 2010. Web. 07 Mar 2021.

Vancouver:

English S. Individual variation in cooperative behaviour in meerkats. [Internet] [Doctoral dissertation]. University of Cambridge; 2010. [cited 2021 Mar 07]. Available from: https://doi.org/10.17863/CAM.16392 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541737.

Council of Science Editors:

English S. Individual variation in cooperative behaviour in meerkats. [Doctoral Dissertation]. University of Cambridge; 2010. Available from: https://doi.org/10.17863/CAM.16392 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541737

Open Access Theses and Dissertations