subject:(Phenotypic Plasticity)

University of Pretoria

1. [No author]. Phenotypic plasticity of phages with diverse genome sizes .

Degree: 2008, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-07092008-141433/

► A key factor in studying evolutionary biology is an understanding of the mechanisms organisms utilise in the ongoing process of adaptation. When faced with a… (more)

▼ A key factor in studying evolutionary biology is an understanding of the mechanisms organisms utilise in the ongoing process of adaptation. When faced with a heterogeneous and unpredictable environment, we expect organisms to evolve either as specialists or generalists, yet a unifying theory as to which will evolve is still lacking due to conflicting hypotheses based on limited empirical evidence. Phenotypic plasticity allows a single genotype to express different phenotypes, and has been found as an adaptive response to changing environments in all major taxa. With the advent of genomics it has become possible to study the underlying genetics of this phenomenon. It is however becoming clear that there is no single principle governing the plastic response, but rather a complex set of interactions between what appears to be regulatory and structural genes. With empirical data only recently becoming more readily available, the modelling of plastic responses are often still founded on the theoretical predictions and assumptions for which there is little proof. To bridge the gap between theory and nature, the challenge facing scientists today is the construction of experimental systems where theoretical predictions can be scrutinised. Given that phenotypic plasticity is a widespread phenomenon, understanding the magnitude and constraints of this response is an important issue in the study of evolution. Models have predicted a correlation between genome size and phenotypic plasticity, with increased genome size (complexity) linked to higher levels of phenotypic plasticity. Experimental findings, however, increasingly point to plasticity being governed by complicated sets of interactions between various parts of the genome, the adaptive landscape, and environmental cues. In the work presented here, a study was designed to test for a correlation between genome size and the level of plasticity by, looking at the fitness response of phages exposed to varying temperature. Seven phages differing in genome size and genome composition were used. Genome sizes ranged from 5386 bp to 170 000 bp. Taking advantage of the short generation times of phages, fitness could be measured as the growth rate per hour, which was compared among the different phage groups. The growth of large populations within a constant, controlled environment minimized the complications of environmental heterogeneity, and allowed for quantitative measure of the response to different temperatures. This was used to gain insight into how genome size relates to the level of phenotypic plasticity. Limited generation numbers were allowed for, to ensure population growth could be directly related to the plasticity of the genome, since numerous generations would be required for the effects of selection to become apparent. Adsorption rates are influenced by temperature, and were therefore measured to determine if it had a significant effect on the resulting population density. Results showed a marginal interaction between genome size and phenotypic plasticity, with… Advisors/Committee Members: Prof J M Greeff (advisor), Prof S Durbach (advisor).

Subjects/Keywords: Phenotypic plasticity of phages; UCTD

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APA (6^th Edition):

author], [. (2008). Phenotypic plasticity of phages with diverse genome sizes . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-07092008-141433/

Chicago Manual of Style (16^th Edition):

author], [No. “Phenotypic plasticity of phages with diverse genome sizes .” 2008. Masters Thesis, University of Pretoria. Accessed April 11, 2021. http://upetd.up.ac.za/thesis/available/etd-07092008-141433/.

MLA Handbook (7^th Edition):

author], [No. “Phenotypic plasticity of phages with diverse genome sizes .” 2008. Web. 11 Apr 2021.

Vancouver:

author] [. Phenotypic plasticity of phages with diverse genome sizes . [Internet] [Masters thesis]. University of Pretoria; 2008. [cited 2021 Apr 11]. Available from: http://upetd.up.ac.za/thesis/available/etd-07092008-141433/.

Council of Science Editors:

author] [. Phenotypic plasticity of phages with diverse genome sizes . [Masters Thesis]. University of Pretoria; 2008. Available from: http://upetd.up.ac.za/thesis/available/etd-07092008-141433/

University of Alberta

2. Neufeld, Chris. Morphological plasticity of barnacle feeding legs and penises.

Degree: PhD, Department of Biological Sciences, 2011, University of Alberta

URL: https://era.library.ualberta.ca/files/cz30pt329

► One important source of phenotypic variation on which natural selection can act is developmental plasticity (the capacity of a single genotype to produce different environment-dependent… (more)

▼ One important source of phenotypic variation on which natural selection can act is developmental plasticity (the capacity of a single genotype to produce different environment-dependent forms). Therefore, studies of how the environment influences development can facilitate our understanding of how natural selection acts to yield phenotypic evolution. Using the Pacific barnacle (Balanus glandula Darwin), I explored how functionally independent appendages (the legs and unusually long penises of barnacles) respond to widespread spatial and temporal variation in water velocity and conspecific density. Through field surveys, reciprocal transplant experiments, and histological sectioning, I show that barnacle legs and penises appear remarkably well adapted to spatial and temporal variation in water velocity. Building on past work on leg form variation, I show that penises from exposed shores were shorter than, stouter than, and more than twice as massive for their length, as those from nearby protected bays (this effect holds true for artificially inflated penises as well). A transplant experiment confirmed that most of this variation in penis and leg form variation was due to developmental plasticity. Penises and legs of barnacles from an exposed shore also had thicker cuticle, and muscles with greater cross-sectional area (and shorter sarcomeres) compared to those from a protected shore. Form variation was consistent with numerous predictions from engineering theory suggesting that barnacles show dramatic, complex and likely adaptive variation in leg and penis form among sites that differ dramatically in water velocity. Additional experiments showed evidence for and against developmental limits to plasticity in barnacles. A transplant experiment identified an important (and asymmetrical) developmental limit to leg-length response time – likely mediated by food limitation – while a field survey showed that developmental coupling does not restrict adaptive plastic responses of legs and penises to multiple conflicting cues (conspecific density and water velocity). Finally, a two-year survey of natural populations revealed the first evidence that barnacles also change leg form seasonally. Together these results contribute valuable information on the mechanisms of phenotypic change. This research also sheds light on the circumstances that allow decoupling of developmental processes to produce novel combinations of characters on which natural selection can act.

Subjects/Keywords: Phenotypic Plasticity; Genitalia; Cirrepedia; Barnacle

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APA (6^th Edition):

Neufeld, C. (2011). Morphological plasticity of barnacle feeding legs and penises. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/cz30pt329

Chicago Manual of Style (16^th Edition):

Neufeld, Chris. “Morphological plasticity of barnacle feeding legs and penises.” 2011. Doctoral Dissertation, University of Alberta. Accessed April 11, 2021. https://era.library.ualberta.ca/files/cz30pt329.

MLA Handbook (7^th Edition):

Neufeld, Chris. “Morphological plasticity of barnacle feeding legs and penises.” 2011. Web. 11 Apr 2021.

Vancouver:

Neufeld C. Morphological plasticity of barnacle feeding legs and penises. [Internet] [Doctoral dissertation]. University of Alberta; 2011. [cited 2021 Apr 11]. Available from: https://era.library.ualberta.ca/files/cz30pt329.

Council of Science Editors:

Neufeld C. Morphological plasticity of barnacle feeding legs and penises. [Doctoral Dissertation]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/cz30pt329

Nelson Mandela Metropolitan University

3. Van de Ven, Tanja Maria Francisca Nicole. Phenotypic plasticity of metabolic rate in an afrotropical bird species (Euplectes orix) across a temperature gradient.

Degree: Faculty of Science, 2012, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/d1012659

► Avian species are known to have the capacity to respond to environmental changes through physiological adjustments. The process whereby organisms adjust their phenotype without genetic… (more)

▼ Avian species are known to have the capacity to respond to environmental changes through physiological adjustments. The process whereby organisms adjust their phenotype without genetic change is termed phenotypic plasticity and it is mostly observed to be a phenotypic improvement to ecological challenges. Metabolic rate (MR), which is the rate of energy expenditure in a species, is a highly flexible physiological parameter which results in a great diversity of avian standardised metabolic rates. Like birds from high latitudes, Afrotropical bird species are expected to have the capacity to adjust their energy expenditure to match the availability of resources. Previous studies on the flexibility of physiological parameters in birds have focused on the magnitude of change of physiological adjustments and the cues inducing these changes. Comparative research has furthermore investigated metabolic rates across aridity, altitude, latitude and temperature gradients. Recently, a clear dichotomy has become evident with elevated metabolic rates observed in high latitude birds in winter and a down-regulation of metabolic rates observed in birds exposed to low latitude mild winters. In this study, the shape of the reaction norm, the magnitude, the reversibility, the direction and the rate of change of two physiological parameters, basal metabolic rate (BMR) and summit metabolic rate (Msum), were investigated in a coastal and an inland population of Southern Red Bishops (Euplectes orix) through seasonal acclimatisation and laboratory acclimation. Summer and winter basal metabolic rates as well as body mass, were highly flexible traits in free-ranging coastal and inland Red Bishops. Birds acclimatised to a mild coastal climate in winter exhibited reduced basal and summit metabolic rates, whereas birds originating from a more variable inland climate increased basal metabolic rate in winter, but did not show increases of Msum in winter. Red Bishops responded to short term thermal acclimation under laboratory conditions by gradually changing body mass. Acclimation periods of 21 days revealed a negative relationship between body mass and acclimation air temperature. Peak responses of basal metabolic rate to ambient temperature change were observed in both coastal and inland birds between two and eight days after the change in acclimation air temperature. The influences of seasonal acclimatisation on energy expenditure differed between coastal and inland birds, however, during laboratory acclimation individuals from the two populations showed no difference in response. Within the individuals of the coastal and inland Southern Red Bishops, phenotypic flexibility is observed in body mass, basal metabolic rate and summit metabolic rate as a response to environmental changes. This flexibility is thought to increase thermoregulatory capacities of the Southern Red Bishop in different habitats and climates.

Subjects/Keywords: Phenotypic plasticity; Evolutionary genetics

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APA (6^th Edition):

Van de Ven, T. M. F. N. (2012). Phenotypic plasticity of metabolic rate in an afrotropical bird species (Euplectes orix) across a temperature gradient. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1012659

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):

Van de Ven, Tanja Maria Francisca Nicole. “Phenotypic plasticity of metabolic rate in an afrotropical bird species (Euplectes orix) across a temperature gradient.” 2012. Thesis, Nelson Mandela Metropolitan University. Accessed April 11, 2021. http://hdl.handle.net/10948/d1012659.

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

MLA Handbook (7^th Edition):

Van de Ven, Tanja Maria Francisca Nicole. “Phenotypic plasticity of metabolic rate in an afrotropical bird species (Euplectes orix) across a temperature gradient.” 2012. Web. 11 Apr 2021.

Vancouver:

Van de Ven TMFN. Phenotypic plasticity of metabolic rate in an afrotropical bird species (Euplectes orix) across a temperature gradient. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2012. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10948/d1012659.

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

Council of Science Editors:

Van de Ven TMFN. Phenotypic plasticity of metabolic rate in an afrotropical bird species (Euplectes orix) across a temperature gradient. [Thesis]. Nelson Mandela Metropolitan University; 2012. Available from: http://hdl.handle.net/10948/d1012659

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

University of Oregon

4. Valley, Jenna. Phenotyptic Plasticity in Larval and Juvenile Marine Invertebrates: Effects of Predators, Food, Gravity, and Sunlight.

Degree: PhD, Department of Biology, 2016, University of Oregon

URL: http://hdl.handle.net/1794/20714

► Phenotypic plasticity, the ability of a single genotype to be expressed as a range of phenotypes in response to environmental variation, is a widespread phenomenon.… (more)

▼ Phenotypic plasticity, the ability of a single genotype to be expressed as a range of phenotypes in response to environmental variation, is a widespread phenomenon. Documented increasingly among the larval stages of marine organisms, phenotypic plasticity in the veliger larvae of the marine snail Littorina scutulata was investigated in response to predatory, nutritional, and gravitational stimuli. Veligers developed rounder shells, smaller apertures, and reinforced aperture margins in response to water-borne cues from predatory crab larvae. The nature and degree of the induced-morphologies depended on cue composition and conferred decreased vulnerability to predation. Food-limited veligers developed larger feeding and swimming structures (vela) with longer cilia relative to shell size compared to larvae raised with high food. This inducible offense corresponded with a decrease in vertical swimming speed, an unexpected result possibly reflecting behavioral manipulation of individual velar components. A cell proliferation assay indicated that growth of the larger structure was achieved partially by a steady rate of cell division over a longer period of time; an initially higher level of cell proliferation in veligers raised on high food dropped off sharply. Velar lobe asymmetry, where one lobe is larger than the other, may exist to offset an asymmetry in weight distribution due to how the larval shell is carried. The larger velar lobe overlies the protruding spire of the larval shell. Bi- and multi-lobed vela get bigger with shell size but follow different rules with regards to the relationship between velar asymmetry and shell asymmetry. Experimental alternations of mass distribution of the larval shell caused changes in the ratio of area between each side of the velum and total velar growth for larvae of L. scutulata. Following settlement and metamorphosis, juveniles of intertidal marine invertebrates are subject to additional stressors that can manifest as phenotypic variation. Color differences between juvenile and adult Strongylocentrotus purpuratus were shown to be caused by variation in light exposure. Green juveniles raised in sunlight turned purple (due to more pigment) and showed decreased susceptibility to artificial UVR than urchins kept in the dark, which remained green (due to less pigment). This dissertation includes previously unpublished co-authored material. Advisors/Committee Members: Roy, Barbara (advisor).

Subjects/Keywords: Phenotypic plasticity; Urchin; Veliger larvae

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APA (6^th Edition):

Valley, J. (2016). Phenotyptic Plasticity in Larval and Juvenile Marine Invertebrates: Effects of Predators, Food, Gravity, and Sunlight. (Doctoral Dissertation). University of Oregon. Retrieved from http://hdl.handle.net/1794/20714

Chicago Manual of Style (16^th Edition):

Valley, Jenna. “Phenotyptic Plasticity in Larval and Juvenile Marine Invertebrates: Effects of Predators, Food, Gravity, and Sunlight.” 2016. Doctoral Dissertation, University of Oregon. Accessed April 11, 2021. http://hdl.handle.net/1794/20714.

MLA Handbook (7^th Edition):

Valley, Jenna. “Phenotyptic Plasticity in Larval and Juvenile Marine Invertebrates: Effects of Predators, Food, Gravity, and Sunlight.” 2016. Web. 11 Apr 2021.

Vancouver:

Valley J. Phenotyptic Plasticity in Larval and Juvenile Marine Invertebrates: Effects of Predators, Food, Gravity, and Sunlight. [Internet] [Doctoral dissertation]. University of Oregon; 2016. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1794/20714.

Council of Science Editors:

Valley J. Phenotyptic Plasticity in Larval and Juvenile Marine Invertebrates: Effects of Predators, Food, Gravity, and Sunlight. [Doctoral Dissertation]. University of Oregon; 2016. Available from: http://hdl.handle.net/1794/20714

Queens University

5. Turko, Patrick. Ecological Differentiation in a Hybridizing Cryptic Species Complex .

Degree: Biology, 2012, Queens University

URL: http://hdl.handle.net/1974/6936

► The hybridizing Daphnia mendotae and D. dentifera (Crustacea: Cladocera) are sympatric throughout much of North America, and are considered a cryptic species complex due to… (more)

▼ The hybridizing Daphnia mendotae and D. dentifera (Crustacea: Cladocera) are sympatric throughout much of North America, and are considered a cryptic species complex due to their lack of phylogenetically informative morphological characters. They appear to have no biological mating barriers: hybrids may dominate or coexist with either or both parental species, and are sexually competent, forming both F2 hybrids and back-crosses. Nevertheless, the two species remain distinct. There is observational evidence that separation may be enforced by adaptation to different predation regimes: D. mendotae, with its greater anti-predator morphological plasticity, may out-compete D. dentifera under intense invertebrate predation, while the smaller D. dentifera may be better adapted to avoid predation by visually feeding fish. We tested this idea by examining whether D. mendotae and D. dentifera differ in ecologically relevant life history and morphological traits. We performed a replicated life history experiment involving 6 replicates of 6 clones within each species, and measured time until first reproduction, fecundity, and juvenile and population growth rates. In parallel, we examined whether these species differed in morphological traits predicted to arise from adaptation to different predator types, and tested the ecological relevance of these traits by exposing Daphnia to predation by the invasive cladoceran Bythotrephes longimanus. Finally, we examined the plasticity of life history, morphology, and susceptibility to predation by rearing Daphnia under exposure to Bythotrephes chemical cues for two generations. D. mendotae and D. dentifera differed across almost all measured life history and morphological traits in directions that accord with our hypotheses, strongly suggesting that their species boundaries are maintained by adaptation to different predation regimes. Plastic reaction to Bythotrephes, however, was weak and inconsistent, suggesting that these species either do not detect or respond to this recent invader, or that their responses are manifested in other ways.

Subjects/Keywords: Phenotypic Plasticity ; Ecological Speciation

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APA (6^th Edition):

Turko, P. (2012). Ecological Differentiation in a Hybridizing Cryptic Species Complex . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/6936

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):

Turko, Patrick. “Ecological Differentiation in a Hybridizing Cryptic Species Complex .” 2012. Thesis, Queens University. Accessed April 11, 2021. http://hdl.handle.net/1974/6936.

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

MLA Handbook (7^th Edition):

Turko, Patrick. “Ecological Differentiation in a Hybridizing Cryptic Species Complex .” 2012. Web. 11 Apr 2021.

Vancouver:

Turko P. Ecological Differentiation in a Hybridizing Cryptic Species Complex . [Internet] [Thesis]. Queens University; 2012. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1974/6936.

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

Council of Science Editors:

Turko P. Ecological Differentiation in a Hybridizing Cryptic Species Complex . [Thesis]. Queens University; 2012. Available from: http://hdl.handle.net/1974/6936

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

University of New South Wales

6. Fazlioglu, Fatih. The role and pattern of phenotypic plasticity in ecological specialization of plants.

Degree: Biological, Earth & Environmental Sciences, 2016, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/55963 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39726/SOURCE02?view=true

► Phenotypic plasticity and ecological specialization play vital roles in plant adaptations across habitats. These two fundamental strategies appear to be opposing due to the assumption… (more)

▼ Phenotypic plasticity and ecological specialization play vital roles in plant adaptations across habitats. These two fundamental strategies appear to be opposing due to the assumption that specialization reduces the ability (i.e. plasticity) to respond environmental changes. Despite extensive research on phenotypic plasticity, our understanding of this complex property is still limited. This thesis examines the interplay between plasticity and specialization together with reproductive and competitive strategies of plants. Firstly, I conducted a data-synthesis for the first time in literature to test specialization hypothesis and the role of reproductive strategies in habitat specialization. I found that non-clonal plants expressed greater plasticity than clonal plants. Moreover, specialization to relatively benign habitats did not result in greater performance plasticity; contrary to the specialization hypothesis predictions. Secondly, I examined plasticity and consequences of specialization in an altitudinal gradient following a population expansion from relatively good to more stressful habitats. I tested if specialization is linked with a general loss of plasticity. Specialization to a higher abiotic stress was associated with adaptive plasticity loss in functional traits. Therefore, specialization may limit plant responses to future environmental changes. Thirdly, I studied how simulated competition affects plant life histories and growth forms, and the role of shade avoidance plasticity. I found that all of our species invested more to reproduction under simulated competition. Interestingly, I also found that shade avoidance plasticity can increase reproductive efficiency. Therefore, shade avoidance can be regarded as a strategy to increase reproduction and not only a competitive strategy as has been predicted. Lastly, I tested specialization hypothesis along an environmental stress gradient by comparing plastic responses of a high stress mine site and low stress adjacent area populations. There was no performance difference between populations across pH treatments. The overall result did not support the specialization hypothesis and suggested that the species have invaded mine sites are either extreme generalists or retain stress tolerant genotypes. In conclusion, although the evolution of specialization is common in nature, plasticity expression in my experiments did not follow the patterns predicted by the specialization hypothesis. Advisors/Committee Members: Bonser, Stephen, Biological, Earth & Environmental Sciences, Faculty of Science, UNSW, Moles, Angela, Biological, Earth & Environmental Sciences, Faculty of Science, UNSW.

Subjects/Keywords: Plants; Phenotypic plasticity; Ecological specialization

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APA (6^th Edition):

Fazlioglu, F. (2016). The role and pattern of phenotypic plasticity in ecological specialization of plants. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/55963 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39726/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Fazlioglu, Fatih. “The role and pattern of phenotypic plasticity in ecological specialization of plants.” 2016. Doctoral Dissertation, University of New South Wales. Accessed April 11, 2021. http://handle.unsw.edu.au/1959.4/55963 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39726/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Fazlioglu, Fatih. “The role and pattern of phenotypic plasticity in ecological specialization of plants.” 2016. Web. 11 Apr 2021.

Vancouver:

Fazlioglu F. The role and pattern of phenotypic plasticity in ecological specialization of plants. [Internet] [Doctoral dissertation]. University of New South Wales; 2016. [cited 2021 Apr 11]. Available from: http://handle.unsw.edu.au/1959.4/55963 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39726/SOURCE02?view=true.

Council of Science Editors:

Fazlioglu F. The role and pattern of phenotypic plasticity in ecological specialization of plants. [Doctoral Dissertation]. University of New South Wales; 2016. Available from: http://handle.unsw.edu.au/1959.4/55963 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:39726/SOURCE02?view=true

7. Herrera, Freddy O. The role of phenotypic plasticity in the colonization of novel environments.

Degree: 2013, NC Docks

URL: http://libres.uncg.edu/ir/uncg/f/Herrera_uncg_0154M_11253.pdf

► Biological invasions have been argued to be facilitated by phenotypic plasticity. Although experiments have shown plasticity can be adaptive, our current understanding is limited to… (more)

Subjects/Keywords: Phenotypic plasticity; Plantago $x Genetics

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APA (6^th Edition):

Herrera, F. O. (2013). The role of phenotypic plasticity in the colonization of novel environments. (Thesis). NC Docks. Retrieved from http://libres.uncg.edu/ir/uncg/f/Herrera_uncg_0154M_11253.pdf

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):

Herrera, Freddy O. “The role of phenotypic plasticity in the colonization of novel environments.” 2013. Thesis, NC Docks. Accessed April 11, 2021. http://libres.uncg.edu/ir/uncg/f/Herrera_uncg_0154M_11253.pdf.

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

MLA Handbook (7^th Edition):

Herrera, Freddy O. “The role of phenotypic plasticity in the colonization of novel environments.” 2013. Web. 11 Apr 2021.

Vancouver:

Herrera FO. The role of phenotypic plasticity in the colonization of novel environments. [Internet] [Thesis]. NC Docks; 2013. [cited 2021 Apr 11]. Available from: http://libres.uncg.edu/ir/uncg/f/Herrera_uncg_0154M_11253.pdf.

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

Council of Science Editors:

Herrera FO. The role of phenotypic plasticity in the colonization of novel environments. [Thesis]. NC Docks; 2013. Available from: http://libres.uncg.edu/ir/uncg/f/Herrera_uncg_0154M_11253.pdf

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

Cornell University

8. Cortez, Michael. Understanding The Effects Of Rapid Adaptation On Predator-Prey Interactions Using The Theory Of Fast-Slow Dynamical Systems.

Degree: PhD, Applied Mathematics, 2011, Cornell University

URL: http://hdl.handle.net/1813/33579

► Interspecific interactions depend not only on the population densities of the interacting species, but on their phenotypes as well. Variation in ecologically important species traits… (more)

▼ Interspecific interactions depend not only on the population densities of the interacting species, but on their phenotypes as well. Variation in ecologically important species traits can be heritable or plastic in nature and both yield phenotypic change that occurs at rates comparable to or faster than those of ecological dynamics. This thesis explores how the effects of heritable and plastic phenotypic variation on community dynamics can be captured under one unifying theory using the theory of fast-slow dynamical systems. The analysis presented here focuses on the limit where phenotypic change occurs faster than changes in species' abundances in predator-prey systems. This approach reduces model dimension and yields analytical results and graphical methods with predictive power about when new and unique dynamics will arise in ecological systems with rapid phenotypic change. In addition, while explicitly assuming a separation of time scales, the analysis of the fast adaptation limit yields insight into the consequences of adaptive change when the rates of the adaptive and ecological processes are comparable. The results presented here show that evolution and phenotypic plasticity have different effects on the community dynamics of predator-prey systems. Rapid evolution has the potential to stabilize or destabilize population oscillations while phenotypic plasticity only stabilizes population oscillations. Evo- lution can also yield population oscillations where the predator and prey are completely out-of-phase or one species oscillates while the other remains essentially constant. These two behaviors are not possible in phenotypically plastic or phenotypically fixed predator-prey systems. This thesis also presents an analysis of the dynamics that arise in the vicinity of a transversal intersection of the critical manifold in multiple time scale biological systems. Such intersections are generic in fast-slow eco-evolutionary models and the results presented here show that complex dynamics arise near the transversal intersections of the critical manifold. These dynamics arise in regions of parameter space where periodic orbits exist and in phase space where the fast-slow structure of the system is no longer present. Advisors/Committee Members: Ellner, Stephen Paul (chair), Hairston Jr, Nelson George (committee member), Guckenheimer, John Mark (committee member).

Subjects/Keywords: phenotypic plasticity; rapid evolution; fast-slow systems

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APA (6^th Edition):

Cortez, M. (2011). Understanding The Effects Of Rapid Adaptation On Predator-Prey Interactions Using The Theory Of Fast-Slow Dynamical Systems. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/33579

Chicago Manual of Style (16^th Edition):

Cortez, Michael. “Understanding The Effects Of Rapid Adaptation On Predator-Prey Interactions Using The Theory Of Fast-Slow Dynamical Systems.” 2011. Doctoral Dissertation, Cornell University. Accessed April 11, 2021. http://hdl.handle.net/1813/33579.

MLA Handbook (7^th Edition):

Cortez, Michael. “Understanding The Effects Of Rapid Adaptation On Predator-Prey Interactions Using The Theory Of Fast-Slow Dynamical Systems.” 2011. Web. 11 Apr 2021.

Vancouver:

Cortez M. Understanding The Effects Of Rapid Adaptation On Predator-Prey Interactions Using The Theory Of Fast-Slow Dynamical Systems. [Internet] [Doctoral dissertation]. Cornell University; 2011. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1813/33579.

Council of Science Editors:

Cortez M. Understanding The Effects Of Rapid Adaptation On Predator-Prey Interactions Using The Theory Of Fast-Slow Dynamical Systems. [Doctoral Dissertation]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/33579

Texas A&M University

9. Owings, Charity Grace 1987-. Developmental Plasticity of Cochliomyia macellaria Fabricius (Diptera: Calliphoridae) from Three Distinct Ecoregions in Texas.

Degree: MS, Entomology, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/148208

► Forensic entomology is a well-established science linking arthropod biology and ecology to legal investigations. Specifically, immature development on a decomposing corpse may give insight into… (more)

▼ Forensic entomology is a well-established science linking arthropod biology and ecology to legal investigations. Specifically, immature development on a decomposing corpse may give insight into the minimum time elapsed since death. Until recently, biological variation within a single species has been overlooked when estimating colonization events. Variation in the form of phenotypic plasticity, or the ability of a single genotype to produce multiple phenotypes under alternative stresses, has been documented in genetic and ecological literature and spans across all phyla. Taking this into account, different subpopulations of forensically pertinent insect species should also possess the ability to adapt to changing environments as geographic distribution increases. Thus, plastic responses of a species to alternative stresses may be measured in biological parameters, such as development time. In this research, three geographically distinct strains of the blow fly Cochliomyia macellaria Fabricius (Diptera Calliphoridae) were reared in two distinct environments in order to measure development time, as well as pupal and adult masses. Strains exhibited genetic variance when compared to each other, and each strain exhibited variable responses across environments (phenotypic plasticity). Plasticity in the form of genotype by environment (GxE) interactions was also exhibited by C. macellaria, although consistent adherence to any single rule explaining ontogenetic trends was not apparent. This research supports the existence of intraspecific variation in a common blow fly of forensic importance. Results of this study will impact the forensic entomology community by encouraging the generation of either strain;specific developmental datasets or statistical models to minimize variation caused by genetic, environment, or GxE effects in order to compare developmental data across strains. Advisors/Committee Members: Tomberlin, Jeffery K (advisor), Tarone, Aaron M (committee member), Lacher, Thomas E (committee member).

Subjects/Keywords: forensic entomology; Texas; blow fly; Phenotypic plasticity

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APA (6^th Edition):

Owings, C. G. 1. (2012). Developmental Plasticity of Cochliomyia macellaria Fabricius (Diptera: Calliphoridae) from Three Distinct Ecoregions in Texas. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/148208

Chicago Manual of Style (16^th Edition):

Owings, Charity Grace 1987-. “Developmental Plasticity of Cochliomyia macellaria Fabricius (Diptera: Calliphoridae) from Three Distinct Ecoregions in Texas.” 2012. Masters Thesis, Texas A&M University. Accessed April 11, 2021. http://hdl.handle.net/1969.1/148208.

MLA Handbook (7^th Edition):

Owings, Charity Grace 1987-. “Developmental Plasticity of Cochliomyia macellaria Fabricius (Diptera: Calliphoridae) from Three Distinct Ecoregions in Texas.” 2012. Web. 11 Apr 2021.

Vancouver:

Owings CG1. Developmental Plasticity of Cochliomyia macellaria Fabricius (Diptera: Calliphoridae) from Three Distinct Ecoregions in Texas. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1969.1/148208.

Council of Science Editors:

Owings CG1. Developmental Plasticity of Cochliomyia macellaria Fabricius (Diptera: Calliphoridae) from Three Distinct Ecoregions in Texas. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/148208

McMaster University

10. Ivy, Catherine. HIGH-ALTITUDE ADAPTATION AND CONTROL OF BREATHING IN DEER MICE (PEROMYSCUS MANICULATUS).

Degree: PhD, 2020, McMaster University

URL: http://hdl.handle.net/11375/25533

►

For animals at high altitude, low oxygen (hypoxia) is an unremitting stressor that has the potential to impair metabolism and performance. The hypoxic chemoreflex senses… (more)

▼

For animals at high altitude, low oxygen (hypoxia) is an unremitting stressor that has the potential to impair metabolism and performance. The hypoxic chemoreflex senses reductions in the partial pressure of O2 in the arterial blood and thus elicits many of the physiological responses to hypoxia, including increases in breathing and activation of the sympathetic nervous system. The hypoxic chemoreflex is vital to surviving acute exposure to severe hypoxia, but the advantage of this reflex during chronic hypoxia is less clear. The goals of my thesis were to examine how control of breathing by the hypoxic chemoreflex has evolved in high-altitude natives to maintain O2 transport in chronic hypoxia, and to elucidate the potential genetic mechanisms that were involved. This was accomplished using deer mice (Peromyscus maniculatus) native to high- and low-altitudes, in addition to a strictly low-altitude species (P. leucopus). I found that high-altitude deer mice breathe with higher total ventilation using preferentially deeper breaths, contributing to higher O2 saturation of arterial blood, but in contrast to lowland mice highlanders do not exhibit ventilatory plasticity in response to chronic hypoxia. These phenotypes appeared to be uniquely evolved in the highland population and arise during the onset of endothermy in early post-natal development. I then used second-generation inter-population hybrids to evaluate the effects of genetic variation (specifically, in the hypoxia-inducible factor 2a gene Epas1 and in haemoglobin genes) on an admixed genomic background. The high-altitude variant of α-globin could completely explain the deep breathing pattern of highland mice, whereas the high-altitude variant of Epas1 and possibly β-globin contributed to their apparent lack of ventilatory plasticity in response to chronic hypoxia. Together, the physiological changes elicited by these mutations contribute to maintaining O2 uptake and metabolism in the cold and hypoxic environment at high altitude.

Thesis

Doctor of Philosophy (PhD)

High-altitude environments are amongst the harshest on earth, with extremely low levels of oxygen, but some animals not only survive but thrive in these conditions. How these animals do so was previously not well understood. My thesis has uncovered how the evolution of respiratory physiology contributes to high-altitude adaptation in the deer mouse, the species with the broadest altitudinal distribution of any North American mammal, and has elucidated the genetic mechanisms involved. My work contributes to understanding nature’s solutions to oxygen deprivation – an all too common problem in many human and animal diseases.

Advisors/Committee Members: Scott, Graham, Biology.

Subjects/Keywords: Hypoxia; Genetic adaptation; Phenotypic plasticity; Carotid body

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APA (6^th Edition):

Ivy, C. (2020). HIGH-ALTITUDE ADAPTATION AND CONTROL OF BREATHING IN DEER MICE (PEROMYSCUS MANICULATUS). (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/25533

Chicago Manual of Style (16^th Edition):

Ivy, Catherine. “HIGH-ALTITUDE ADAPTATION AND CONTROL OF BREATHING IN DEER MICE (PEROMYSCUS MANICULATUS).” 2020. Doctoral Dissertation, McMaster University. Accessed April 11, 2021. http://hdl.handle.net/11375/25533.

MLA Handbook (7^th Edition):

Ivy, Catherine. “HIGH-ALTITUDE ADAPTATION AND CONTROL OF BREATHING IN DEER MICE (PEROMYSCUS MANICULATUS).” 2020. Web. 11 Apr 2021.

Vancouver:

Ivy C. HIGH-ALTITUDE ADAPTATION AND CONTROL OF BREATHING IN DEER MICE (PEROMYSCUS MANICULATUS). [Internet] [Doctoral dissertation]. McMaster University; 2020. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/11375/25533.

Council of Science Editors:

Ivy C. HIGH-ALTITUDE ADAPTATION AND CONTROL OF BREATHING IN DEER MICE (PEROMYSCUS MANICULATUS). [Doctoral Dissertation]. McMaster University; 2020. Available from: http://hdl.handle.net/11375/25533

University of Houston

11. Russey, William Andrew 1986-. THE ROLE OF TEMPERATURE AND ADAPTIVE PHENOTYPIC PLASTICITY IN THE EVOLUTION OF DROSOPHILA MELANOGASTER MORPHOLOGICAL CLINES.

Degree: PhD, Biology, 2014, University of Houston

URL: http://hdl.handle.net/10657/1463

► Variation in morphology results in variation in ecologically relevant performances, which ultimately results in variation in fitness allowing for adaptive evolution. Task performances, such as… (more)

▼ Variation in morphology results in variation in ecologically relevant performances, which ultimately results in variation in fitness allowing for adaptive evolution. Task performances, such as flight ability, result from the proper scaling of and functional integration of numerous component traits. Morphological variation underlying ecologically relevant task performances can experience strong environmental effects in their expression, or phenotypic plasticity. Historically, the role phenotypic plasticity in adaptive evolution has been controversial, although it has garnered increased support in recent decades. Drosophila spp. are globally distributed and exhibit convergent morphological clines in flight morphology, and importantly, they also exhibit patterns of phenotypic plasticity consistent with these geographic patterns. In the work presented here, I examine if existing patterns of D. melanogaster flight morphology are adaptive regarding flight performance and fitness under the prediction of phenotype-environment matching, wherein the phenotype expressed in an environment enhances fitness in the predicted environment. In the work presented here, I demonstrate (i) phenotypic plasticity in D. melanogaster exhibits a pattern of adaptive phenotype-environment matching in which an induced phenotype is best-suited for flight at the temperature of development, (ii) the pattern of thermally-induced phenotypic plasticity facilitates the evolution of upwind flight performance at Cool and Warm flight temperatures, (iii) adaptive evolution by genetic accommodation is a dynamic process and the contribution of traits responding to selection vary and change over time, and finally, (iv) the adaptive pattern of phenotype-environment matching regarding flight performance is only partially realized as an increase to fitness, measured as survival in presence of predators. My dissertation work importantly demonstrates existing patterns of phenotype-environment matching in D. melanogaster, and demonstrates how this pattern facilitates adaptive evolution by genetic accommodation in a complex phenotype that exhibits natural, continuous variation. Advisors/Committee Members: Frankino, W. Anthony (advisor), Azevedo, Ricardo B. R. (committee member), Cole, Blaine J. (committee member), Roman, Gregg (committee member), Roberts, Stephen P. (committee member).

Subjects/Keywords: Phenotypic plasticity; Temperature; Drosophila; Flight; Genetic accommodation

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APA (6^th Edition):

Russey, W. A. 1. (2014). THE ROLE OF TEMPERATURE AND ADAPTIVE PHENOTYPIC PLASTICITY IN THE EVOLUTION OF DROSOPHILA MELANOGASTER MORPHOLOGICAL CLINES. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1463

Chicago Manual of Style (16^th Edition):

Russey, William Andrew 1986-. “THE ROLE OF TEMPERATURE AND ADAPTIVE PHENOTYPIC PLASTICITY IN THE EVOLUTION OF DROSOPHILA MELANOGASTER MORPHOLOGICAL CLINES.” 2014. Doctoral Dissertation, University of Houston. Accessed April 11, 2021. http://hdl.handle.net/10657/1463.

MLA Handbook (7^th Edition):

Russey, William Andrew 1986-. “THE ROLE OF TEMPERATURE AND ADAPTIVE PHENOTYPIC PLASTICITY IN THE EVOLUTION OF DROSOPHILA MELANOGASTER MORPHOLOGICAL CLINES.” 2014. Web. 11 Apr 2021.

Vancouver:

Russey WA1. THE ROLE OF TEMPERATURE AND ADAPTIVE PHENOTYPIC PLASTICITY IN THE EVOLUTION OF DROSOPHILA MELANOGASTER MORPHOLOGICAL CLINES. [Internet] [Doctoral dissertation]. University of Houston; 2014. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10657/1463.

Council of Science Editors:

Russey WA1. THE ROLE OF TEMPERATURE AND ADAPTIVE PHENOTYPIC PLASTICITY IN THE EVOLUTION OF DROSOPHILA MELANOGASTER MORPHOLOGICAL CLINES. [Doctoral Dissertation]. University of Houston; 2014. Available from: http://hdl.handle.net/10657/1463

University of Pennsylvania

12. O'Brien, Katherine Rogan. The Genetic Basis of Phenotypic Plasticity in Natural Populations of Drosophila.

Degree: 2014, University of Pennsylvania

URL: https://repository.upenn.edu/edissertations/1391

► Environment-dependent phenotypic expression, also known as phenotypic plasticity is exhibited to some degree by all organisms. Natural selection can act on the ability to respond… (more)

▼ Environment-dependent phenotypic expression, also known as phenotypic plasticity is exhibited to some degree by all organisms. Natural selection can act on the ability to respond to the environment allowing individuals to maintain fitness across heterogeneous environments. However, phenotypic plasticity can also potentially slow the rate of adaptive evolution within a population or result in maladaptive phenotypes. Despite the widespread occurrence and consequence for adaptive evolution, the genetic architecture and specific molecular variants that underlie phenotypic plasticity remain largely unknown. To evaluate patterns of plasticity and the genes that mediate the plastic response this work utilizes Drosophila melanogaster and its close sister specie Drosophila simulans. Individual lines collected from natural populations of D. melanogaster and D. simulans have previously been shown to exhibit phenotypic plasticity for several traits in response to changes in temperature and nutrition. However, these studies do not address patterns of plasticity across heterogeneous environments. To establish that the strength of the plastic response varies within and among natural populations isofemale lines of D. melanogaster and D. simulans were collected from three locations along the east coast and exposed to various larval rearing environment. The geographic pattern in the strength of the plastic response is only present in some traits and absent in others, which highlights the modular nature of phenotypic plasticity. To identify a gene that is able to modulate plasticity across several life history traits this work takes advantage of a candidate gene approach. A previously identified genetic polymorphism in the couch potato (cpo) gene in D. melanogaster mediates the propensity to diapause is shown in this work to affect the individual's ability to respond plastically across several life history traits. The patterns observed in the investigation of cpo parallel the patterns of plasticity observed in natural populations. Thus, polymorphism in cpo gene may play an important role in the meditation of plasticity in natural populations. These findings provide insight into plasticity within natural populations and the genes that underlie the strength of the plastic response.

Subjects/Keywords: Cline; Evolution; Genetics; Phenotypic Plasticity; Biology

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APA (6^th Edition):

O'Brien, K. R. (2014). The Genetic Basis of Phenotypic Plasticity in Natural Populations of Drosophila. (Thesis). University of Pennsylvania. Retrieved from https://repository.upenn.edu/edissertations/1391

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):

O'Brien, Katherine Rogan. “The Genetic Basis of Phenotypic Plasticity in Natural Populations of Drosophila.” 2014. Thesis, University of Pennsylvania. Accessed April 11, 2021. https://repository.upenn.edu/edissertations/1391.

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

MLA Handbook (7^th Edition):

O'Brien, Katherine Rogan. “The Genetic Basis of Phenotypic Plasticity in Natural Populations of Drosophila.” 2014. Web. 11 Apr 2021.

Vancouver:

O'Brien KR. The Genetic Basis of Phenotypic Plasticity in Natural Populations of Drosophila. [Internet] [Thesis]. University of Pennsylvania; 2014. [cited 2021 Apr 11]. Available from: https://repository.upenn.edu/edissertations/1391.

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

Council of Science Editors:

O'Brien KR. The Genetic Basis of Phenotypic Plasticity in Natural Populations of Drosophila. [Thesis]. University of Pennsylvania; 2014. Available from: https://repository.upenn.edu/edissertations/1391

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

Georgia Tech

13. Dell, Claire Louise Alice. Acclimating across healthy and degraded reefs.

Degree: PhD, Biology, 2016, Georgia Tech

URL: http://hdl.handle.net/1853/58580

► As a result of human activities, many environments are becoming fragmented into areas with different community compositions and selective regimes. The coral reefs of Fiji… (more)

Subjects/Keywords: Coral reef; Marine protected area; Phenotypic plasticity

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APA (6^th Edition):

Dell, C. L. A. (2016). Acclimating across healthy and degraded reefs. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/58580

Chicago Manual of Style (16^th Edition):

Dell, Claire Louise Alice. “Acclimating across healthy and degraded reefs.” 2016. Doctoral Dissertation, Georgia Tech. Accessed April 11, 2021. http://hdl.handle.net/1853/58580.

MLA Handbook (7^th Edition):

Dell, Claire Louise Alice. “Acclimating across healthy and degraded reefs.” 2016. Web. 11 Apr 2021.

Vancouver:

Dell CLA. Acclimating across healthy and degraded reefs. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1853/58580.

Council of Science Editors:

Dell CLA. Acclimating across healthy and degraded reefs. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/58580

Georgia Tech

14. Glastad, Karl M. Epigenetics in social insects.

Degree: PhD, Biology, 2016, Georgia Tech

URL: http://hdl.handle.net/1853/54926

► Virtually all multicellular organisms are capable of developing differently in response to environmental variation. At the molecular level, such developmental plasticity requires interpretation and perpetuation… (more)

Subjects/Keywords: Epigenetics; DNA methylation; Social insects; Phenotypic plasticity

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APA (6^th Edition):

Glastad, K. M. (2016). Epigenetics in social insects. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54926

Chicago Manual of Style (16^th Edition):

Glastad, Karl M. “Epigenetics in social insects.” 2016. Doctoral Dissertation, Georgia Tech. Accessed April 11, 2021. http://hdl.handle.net/1853/54926.

MLA Handbook (7^th Edition):

Glastad, Karl M. “Epigenetics in social insects.” 2016. Web. 11 Apr 2021.

Vancouver:

Glastad KM. Epigenetics in social insects. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1853/54926.

Council of Science Editors:

Glastad KM. Epigenetics in social insects. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/54926

University of Guelph

15. Cochrane, Paige. Developmental plasticity and phenotypic flexibility in the oxygen sensing system of the amphibious fish Kryptolebias marmoratus.

Degree: MS, Department of Integrative Biology, 2020, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/23666

► Proper development of the O2 sensing system is essential for survival, particularly in amphibious fishes that may encounter a wide range of environmental O2 levels.… (more)

Subjects/Keywords: neuroepithelial cells; early development; phenotypic plasticity; oxygen

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APA (6^th Edition):

Cochrane, P. (2020). Developmental plasticity and phenotypic flexibility in the oxygen sensing system of the amphibious fish Kryptolebias marmoratus. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/23666

Chicago Manual of Style (16^th Edition):

Cochrane, Paige. “Developmental plasticity and phenotypic flexibility in the oxygen sensing system of the amphibious fish Kryptolebias marmoratus.” 2020. Masters Thesis, University of Guelph. Accessed April 11, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/23666.

MLA Handbook (7^th Edition):

Cochrane, Paige. “Developmental plasticity and phenotypic flexibility in the oxygen sensing system of the amphibious fish Kryptolebias marmoratus.” 2020. Web. 11 Apr 2021.

Vancouver:

Cochrane P. Developmental plasticity and phenotypic flexibility in the oxygen sensing system of the amphibious fish Kryptolebias marmoratus. [Internet] [Masters thesis]. University of Guelph; 2020. [cited 2021 Apr 11]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/23666.

Council of Science Editors:

Cochrane P. Developmental plasticity and phenotypic flexibility in the oxygen sensing system of the amphibious fish Kryptolebias marmoratus. [Masters Thesis]. University of Guelph; 2020. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/23666

University of Sydney

16. Fernandes, Kenya Euphemia. Phenotypic plasticity in Cryptococcus: clinical outcome & alternative antifungal therapy .

Degree: 2020, University of Sydney

URL: http://hdl.handle.net/2123/23129

► Cryptococcosis, caused by pathogenic yeasts of the Cryptococcus neoformans/ gattii complex, is a fungal disease associated with high mortality rates due in part to an… (more)

▼ Cryptococcosis, caused by pathogenic yeasts of the Cryptococcus neoformans/ gattii complex, is a fungal disease associated with high mortality rates due in part to an incomplete knowledge of host-pathogen interactions, and a lack of effective antifungals. The aims of this thesis were therefore firstly to investigate the ability of Cryptococcus for phenotypic variation and determine how this affects pathogenicity and clinical outcome, and secondly, to evaluate and develop the antimicrobial compound lactoferrin (LF) as an antifungal for use in future treatments against Cryptococcus. In the first part of this study, virulence-associated phenotypes were found to differ in a species-specific manner in the C. gattii complex. In C. neoformans, an association between the capacity to make different cell types and clinical outcome was found, indicating that strains capable of greater variation may be more able to sustain infection and resist the host response. Together, these results illustrate the importance of cellular plasticity to host-pathogen interactions. In the second part of this study, LF was found to be active across yeast species primarily due to iron chelation, however synergy with antifungal drug amphotericin B (AMB) was independent of iron. In combination, LF+AMB disrupted biofilms, reduced Cryptococcus cell and capsule size and successfully treated infection in an in vivo wax moth model. Enzymatic digestion of LF produced a hydrolysate with substantially improved synergy and a novel 30-residue peptide dubbed lactofungin (LFG) was identified and synthesised. Antifungal susceptibility testing revealed LFG to be a successful synergent with AMB, outperforming whole LF and requiring lower AMB dosages. Overall, this thesis has provided insight into the relationship between phenotypic variation and virulence with potential significance to clinical outcome and has identified a novel drug lead with the potential to be developed for use in future antifungal therapies.

Subjects/Keywords: phenotypic plasticity; cell size; antifungals; cryptococcus; lactoferrin

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APA (6^th Edition):

Fernandes, K. E. (2020). Phenotypic plasticity in Cryptococcus: clinical outcome & alternative antifungal therapy . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/23129

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):

Fernandes, Kenya Euphemia. “Phenotypic plasticity in Cryptococcus: clinical outcome & alternative antifungal therapy .” 2020. Thesis, University of Sydney. Accessed April 11, 2021. http://hdl.handle.net/2123/23129.

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

MLA Handbook (7^th Edition):

Fernandes, Kenya Euphemia. “Phenotypic plasticity in Cryptococcus: clinical outcome & alternative antifungal therapy .” 2020. Web. 11 Apr 2021.

Vancouver:

Fernandes KE. Phenotypic plasticity in Cryptococcus: clinical outcome & alternative antifungal therapy . [Internet] [Thesis]. University of Sydney; 2020. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/2123/23129.

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

Council of Science Editors:

Fernandes KE. Phenotypic plasticity in Cryptococcus: clinical outcome & alternative antifungal therapy . [Thesis]. University of Sydney; 2020. Available from: http://hdl.handle.net/2123/23129

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

17. Marshall, Matthew M. The genetics of thermal plasticity in Plantago lanceolata.

Degree: 2017, NC Docks

URL: http://libres.uncg.edu/ir/uncg/f/Marshall_uncg_0154D_12304.pdf

► Phenotypic plasticity, an individual’s phenotypic response to environmental change, is a fundamental characteristic of all life on earth that plays a central role in adaptation,… (more)

Subjects/Keywords: Phenotypic plasticity; Natural selection; Plant genetics

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APA (6^th Edition):

Marshall, M. M. (2017). The genetics of thermal plasticity in Plantago lanceolata. (Thesis). NC Docks. Retrieved from http://libres.uncg.edu/ir/uncg/f/Marshall_uncg_0154D_12304.pdf

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):

Marshall, Matthew M. “The genetics of thermal plasticity in Plantago lanceolata.” 2017. Thesis, NC Docks. Accessed April 11, 2021. http://libres.uncg.edu/ir/uncg/f/Marshall_uncg_0154D_12304.pdf.

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

MLA Handbook (7^th Edition):

Marshall, Matthew M. “The genetics of thermal plasticity in Plantago lanceolata.” 2017. Web. 11 Apr 2021.

Vancouver:

Marshall MM. The genetics of thermal plasticity in Plantago lanceolata. [Internet] [Thesis]. NC Docks; 2017. [cited 2021 Apr 11]. Available from: http://libres.uncg.edu/ir/uncg/f/Marshall_uncg_0154D_12304.pdf.

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

Council of Science Editors:

Marshall MM. The genetics of thermal plasticity in Plantago lanceolata. [Thesis]. NC Docks; 2017. Available from: http://libres.uncg.edu/ir/uncg/f/Marshall_uncg_0154D_12304.pdf

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

18. Shipley, Jeremy Ryan. ENVIRONMENTAL EFFECTS ON DEVELOPING BIRDS: SHORT-TERM ADJUSTMENTS WITH LIFE-LONG IMPACTS.

Degree: PhD, Ecology and Evolutionary Biology, 2018, Cornell University

URL: http://hdl.handle.net/1813/59660

► Our understanding of the linkages between developmental environment and emergent phenotypes in non-avian reptiles has grown immensely since the discovery of temperature-based sex determination half… (more)

Subjects/Keywords: Evolution & development; developmental plasticity; phenotype; phenotypic mismatch; phenotypic plasticity; thermogenic capacity; thermoregulation

12 more images…

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APA (6^th Edition):

Shipley, J. R. (2018). ENVIRONMENTAL EFFECTS ON DEVELOPING BIRDS: SHORT-TERM ADJUSTMENTS WITH LIFE-LONG IMPACTS. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/59660

Chicago Manual of Style (16^th Edition):

Shipley, Jeremy Ryan. “ENVIRONMENTAL EFFECTS ON DEVELOPING BIRDS: SHORT-TERM ADJUSTMENTS WITH LIFE-LONG IMPACTS.” 2018. Doctoral Dissertation, Cornell University. Accessed April 11, 2021. http://hdl.handle.net/1813/59660.

MLA Handbook (7^th Edition):

Shipley, Jeremy Ryan. “ENVIRONMENTAL EFFECTS ON DEVELOPING BIRDS: SHORT-TERM ADJUSTMENTS WITH LIFE-LONG IMPACTS.” 2018. Web. 11 Apr 2021.

Vancouver:

Shipley JR. ENVIRONMENTAL EFFECTS ON DEVELOPING BIRDS: SHORT-TERM ADJUSTMENTS WITH LIFE-LONG IMPACTS. [Internet] [Doctoral dissertation]. Cornell University; 2018. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1813/59660.

Council of Science Editors:

Shipley JR. ENVIRONMENTAL EFFECTS ON DEVELOPING BIRDS: SHORT-TERM ADJUSTMENTS WITH LIFE-LONG IMPACTS. [Doctoral Dissertation]. Cornell University; 2018. Available from: http://hdl.handle.net/1813/59660

Wesleyan University

19. Herman, Jacob Joel. Epigenetics of Adaptive Plasticity: An Investigation of Plant Responses to Environmental Stress Within and Across Generations.

Degree: Biology, 2016, Wesleyan University

URL: https://wesscholar.wesleyan.edu/etd_diss/70

► Environments experienced by parent individuals can profoundly affect offspring phenotypes. These inherited environmental effects can include specific developmental adjustments that improve offspring growth under… (more)

▼ Environments experienced by parent individuals can profoundly affect offspring phenotypes. These inherited environmental effects can include specific developmental adjustments that improve offspring growth under the conditions that induced them. Such adaptive transgenerational plasticity has garnered much research interest, yet it remains unclear over how many generations these effects persist, if they influence fitness, and how they are inherited. Similarly, the molecular basis of adaptive within-generation plasticity is unclear in most cases. Recent epigenetics research suggests that DNA methylation can mediate adaptive plasticity, both within and across generations. This dissertation combines phenotypic plasticity experiments and DNA methylation analysis in order to address these outstanding questions. Chapter One reviews examples of adaptive transgenerational plasticity in plants, the potential mechanistic bases of these inherited effects, and their ecological and evolutionary implications. Chapter Two demonstrates that adaptive transgenerational effects of drought stress persist over two generations in the annual plant Polygonum persicaria. These inherited effects enhanced the growth and survival of grandoffspring grown under severe drought stress. Chapter Three shows, through experimental demethylation, that DNA methylation mediates the inherited effects of drought stress in P. persicaria. Furthermore, these methylation-mediated effects of parental drought were genotype-specific. A central conclusion of this study is that genotype, epigenotype, and parental soil-moisture environment interact to adaptively influence functional traits in P. persicaria. Chapter Four examines the relationship between DNA methylation and adaptive within-generation plasticity. Drought stress, low-nutrient stress, and shade each induced DNA methylation changes, as measured by methylation-sensitive AFLP. However, stress-induced methylation changes were not detected in response to each stress in each genetic line. Because genetic lines expressed similar degrees of adaptive plasticity, there was not a consistent association between stress-induced changes in phenotypes and methylation patterns. While this subject requires further study, these results suggest that genotypespecific DNA methylation changes may contribute to the expression of adaptive plasticity. Such genotypic differences underscore the importance of incorporating genetic variation into ecological epigenetics studies. Together, these studies indicate that interactions between genotype, epigenotype, and environmental signals – including those in previous generations – are a meaningful source of phenotypic variation. Further investigating these interactions represents a promising new direction in evolutionary biology. Advisors/Committee Members: Sonia E. Sultan.

Subjects/Keywords: epigenetics; DNA methylation; transgenerational plasticity; phenotypic plasticity; evolutionary ecology; evolution

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

APA (6^th Edition):

Herman, J. J. (2016). Epigenetics of Adaptive Plasticity: An Investigation of Plant Responses to Environmental Stress Within and Across Generations. (Doctoral Dissertation). Wesleyan University. Retrieved from https://wesscholar.wesleyan.edu/etd_diss/70

Chicago Manual of Style (16^th Edition):

Herman, Jacob Joel. “Epigenetics of Adaptive Plasticity: An Investigation of Plant Responses to Environmental Stress Within and Across Generations.” 2016. Doctoral Dissertation, Wesleyan University. Accessed April 11, 2021. https://wesscholar.wesleyan.edu/etd_diss/70.

MLA Handbook (7^th Edition):

Herman, Jacob Joel. “Epigenetics of Adaptive Plasticity: An Investigation of Plant Responses to Environmental Stress Within and Across Generations.” 2016. Web. 11 Apr 2021.

Vancouver:

Herman JJ. Epigenetics of Adaptive Plasticity: An Investigation of Plant Responses to Environmental Stress Within and Across Generations. [Internet] [Doctoral dissertation]. Wesleyan University; 2016. [cited 2021 Apr 11]. Available from: https://wesscholar.wesleyan.edu/etd_diss/70.

Council of Science Editors:

Herman JJ. Epigenetics of Adaptive Plasticity: An Investigation of Plant Responses to Environmental Stress Within and Across Generations. [Doctoral Dissertation]. Wesleyan University; 2016. Available from: https://wesscholar.wesleyan.edu/etd_diss/70

Duke University

20. Lea, Amanda Jeanne. Evolution and Mechanisms of Plasticity in Wild Baboons (Papio cynocephalus) .

Degree: 2017, Duke University

URL: http://hdl.handle.net/10161/14542

► In many species, early life experiences have striking effects on health, reproduction, and survival in adulthood. Thus, early life conditions shape a range of… (more)

Subjects/Keywords: Biology; Genetics; Ecology; baboon; developmental plasticity; DNA methylation; gene regulation; phenotypic plasticity

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APA (6^th Edition):

Lea, A. J. (2017). Evolution and Mechanisms of Plasticity in Wild Baboons (Papio cynocephalus) . (Thesis). Duke University. Retrieved from http://hdl.handle.net/10161/14542

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):

Lea, Amanda Jeanne. “Evolution and Mechanisms of Plasticity in Wild Baboons (Papio cynocephalus) .” 2017. Thesis, Duke University. Accessed April 11, 2021. http://hdl.handle.net/10161/14542.

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

MLA Handbook (7^th Edition):

Lea, Amanda Jeanne. “Evolution and Mechanisms of Plasticity in Wild Baboons (Papio cynocephalus) .” 2017. Web. 11 Apr 2021.

Vancouver:

Lea AJ. Evolution and Mechanisms of Plasticity in Wild Baboons (Papio cynocephalus) . [Internet] [Thesis]. Duke University; 2017. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/10161/14542.

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

Council of Science Editors:

Lea AJ. Evolution and Mechanisms of Plasticity in Wild Baboons (Papio cynocephalus) . [Thesis]. Duke University; 2017. Available from: http://hdl.handle.net/10161/14542

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

Ryerson University

21. Karsou, Abdel Rahman. Characterization of ASF1 and GCN5 in the ciliated protozoan tetrahymena thermophila.

Degree: 2011, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1707

► One method of regulating accessibility of DNA is chromatin remodelling via histone post-translational modifications (PTM). Adding an acetyl group to the lysine residues (K) on… (more)

Subjects/Keywords: Histones; Tetrahymena; Molecular genetics; Phenotypic plasticity; Ciliata – Genetics; Nucleotide sequence

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APA (6^th Edition):

Karsou, A. R. (2011). Characterization of ASF1 and GCN5 in the ciliated protozoan tetrahymena thermophila. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1707

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):

Karsou, Abdel Rahman. “Characterization of ASF1 and GCN5 in the ciliated protozoan tetrahymena thermophila.” 2011. Thesis, Ryerson University. Accessed April 11, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A1707.

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

MLA Handbook (7^th Edition):

Karsou, Abdel Rahman. “Characterization of ASF1 and GCN5 in the ciliated protozoan tetrahymena thermophila.” 2011. Web. 11 Apr 2021.

Vancouver:

Karsou AR. Characterization of ASF1 and GCN5 in the ciliated protozoan tetrahymena thermophila. [Internet] [Thesis]. Ryerson University; 2011. [cited 2021 Apr 11]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1707.

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

Council of Science Editors:

Karsou AR. Characterization of ASF1 and GCN5 in the ciliated protozoan tetrahymena thermophila. [Thesis]. Ryerson University; 2011. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1707

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

University of Rochester

22. Grantham, Mary Elizabeth; Brisson, Jennifer; Tagu, Denis; Le Trionnaire, Gael; Antonio, Chris J.; O'Neil, Brian R.; Zhan, Yi Xiang. The Evolutionary and molecular basis of the Pea Aphid wing polyphenism.

Degree: PhD, 2018, University of Rochester

URL: http://hdl.handle.net/1802/33507

► Phenotypic plasticity is a life-history strategy that allows organisms to match their phenotype to their environmental conditions. Developmental plasticity is a form of phenotypic plasticity… (more)

▼ Phenotypic plasticity is a life-history strategy that allows organisms to match their phenotype to their environmental conditions. Developmental plasticity is a form of phenotypic plasticity where the alternative phenotype is determined during development by environmental cues, but the matched phenotype is not realized until adulthood. The ecological aspects of plasticity of have studied for decades, but the molecular mechanisms underlying plasticity are less well understood. The goal of this dissertation was discover candidate molecular mechanisms controlling plastic alternative morph development. Here we used the pea aphid wing polyphenism (plasticity with discrete morphs) to study transcriptional differences during the development of environmentally-determined morphs. In the pea aphid, the adult female receives the environmental signal and transmits the signal to her developing offspring. The developing embryos then incorporate the maternal signal in to their development and will mature into winged or wingless morphs. Using the pea aphid we can separate reception of the environmental cues (received maternally) from integration of the environmental cue into the embryo’s developmental program. In the first chapter we review pea aphid biology and what is known about the molecular mechanisms underlying alternative morph development in pea aphids. Chapter 2 is an in-depth study of the variation in winged offspring production between pea aphid genotypes and individual females where we discovered evidence of bet-hedging strategies and developed a method for collecting embryos with known phenotypes. We used transcriptomic studies to identify alternative splice variants (Chapter 3) and transcript expression differences (Chapter 4) between winged and wingless destined embryos. We found extensive differential splicing between adult morphs, but few differentially spliced genes between winged and wingless destined embryos (Chapter 3). Studying transcript expression levels, we found an enrichment of FoxO signaling and a number of insulin related genes suggesting a role for insulin/FoxO in the development of alternative morphs in pea aphid embryos (Chapter 4). In addition, the enrichment of FoxO genes and Imp-L2 indicate a direct link between maternal ecdysone and embryonic insulin signaling pathways.

Subjects/Keywords: Pea aphid; Phenotypic plasticity; Polyphenism; Insulin signaling; Alternative splicing; Bet-hedging

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

APA (6^th Edition):

Grantham, Mary Elizabeth; Brisson, Jennifer; Tagu, Denis; Le Trionnaire, Gael; Antonio, Chris J.; O'Neil, Brian R.; Zhan, Y. X. (2018). The Evolutionary and molecular basis of the Pea Aphid wing polyphenism. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/33507

Chicago Manual of Style (16^th Edition):

Grantham, Mary Elizabeth; Brisson, Jennifer; Tagu, Denis; Le Trionnaire, Gael; Antonio, Chris J.; O'Neil, Brian R.; Zhan, Yi Xiang. “The Evolutionary and molecular basis of the Pea Aphid wing polyphenism.” 2018. Doctoral Dissertation, University of Rochester. Accessed April 11, 2021. http://hdl.handle.net/1802/33507.

MLA Handbook (7^th Edition):

Grantham, Mary Elizabeth; Brisson, Jennifer; Tagu, Denis; Le Trionnaire, Gael; Antonio, Chris J.; O'Neil, Brian R.; Zhan, Yi Xiang. “The Evolutionary and molecular basis of the Pea Aphid wing polyphenism.” 2018. Web. 11 Apr 2021.

Vancouver:

Grantham, Mary Elizabeth; Brisson, Jennifer; Tagu, Denis; Le Trionnaire, Gael; Antonio, Chris J.; O'Neil, Brian R.; Zhan YX. The Evolutionary and molecular basis of the Pea Aphid wing polyphenism. [Internet] [Doctoral dissertation]. University of Rochester; 2018. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/1802/33507.

Council of Science Editors:

Grantham, Mary Elizabeth; Brisson, Jennifer; Tagu, Denis; Le Trionnaire, Gael; Antonio, Chris J.; O'Neil, Brian R.; Zhan YX. The Evolutionary and molecular basis of the Pea Aphid wing polyphenism. [Doctoral Dissertation]. University of Rochester; 2018. Available from: http://hdl.handle.net/1802/33507

Universidade do Rio Grande do Norte

23. Dantas, Sebastião Gilton. Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico .

Degree: 2014, Universidade do Rio Grande do Norte

URL: http://repositorio.ufrn.br/handle/123456789/13517

► The Caatinga is the predominant vegetation type in semi-arid region of Brazil, where many inhabitants depend on hunting and gathering for survival, obtaining resources for:… (more)

▼ The Caatinga is the predominant vegetation type in semi-arid region of Brazil, where many inhabitants depend on hunting and gathering for survival, obtaining resources for: food and feed, folk medicine, timber production, etc. It‟s the dry ecosystem with highest population density in the world. The early stages of development are the most critical during the life cycle of a flowering plant and they‟re primordial to its establishment in environments exposed to water stress. Information about adjustments to the growth of the species, correlated with their studies of distribution in Seridó oriental potiguar, are an important ecological and economic standpoint, because they provide subsidies for the development of cultivation techniques, to programs of sustainable use and recovery of degraded areas. This thesis aimed to study the initial growth and foliar morphology in plants like Enterolobium contortisiliquum (Vell.) Morong. (tamboril) and Erythrina velutina Mart. ex Benth (mulungu), species of occurrence in the Caatinga, under water stress. After sowing and emergency, the seedlings were exposed to three water regimes: 450 (control), 225 (moderate stress) and 112.5 (severe stress) mm of water slide for 40 days. Seeding occurred in bags of 5 kg and after the establishment of seedlings thinning was carried out leaving a plantlet per bag. At the beginning the waterings occurred daily with distilled water, passing to be on alternate days after thinning. Twenty and forty days after the thinning seedlings collections were held to be done analysis of growth and biomass partition. When compared to the control group, the treatments with water stress showed reduction in the growth of the aerial part, growth of the greater root, number of leaves and leaflets, dry leaf area and total phytomass in both species, but in general, this effect was most marked for E. velutina. Regarding the partition of biomass, there were few changes throughout the experiment. Morphological changes in the leaves as a function of stress were not significant, however, there was a trend, in both species, to produce narrower leaves, that facilitate heat loss to the environment. It has not been possible to establish a positive relationship between inhibition of growth and distribution of species, whereas E. velutina is a species of most common occurrence in Seridó oriental potiguar. In this way, other aspects should be taken into account when studying the adaptation of species the dry environments, such as salinity, presence of heavy metals, wind speed, etc Advisors/Committee Members: Praxedes, Sidney Carlos (advisor), CPF:02106448422 (advisor), http://lattes.cnpq.br/6609231229691480 (advisor).

Subjects/Keywords: Caatinga. Plasticidade fenotípica. Mulungu. Tamboril; Caatinga. Phenotypic plasticity. Mulungu. Tamboril

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

APA (6^th Edition):

Dantas, S. G. (2014). Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico . (Thesis). Universidade do Rio Grande do Norte. Retrieved from http://repositorio.ufrn.br/handle/123456789/13517

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):

Dantas, Sebastião Gilton. “Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico .” 2014. Thesis, Universidade do Rio Grande do Norte. Accessed April 11, 2021. http://repositorio.ufrn.br/handle/123456789/13517.

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

MLA Handbook (7^th Edition):

Dantas, Sebastião Gilton. “Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico .” 2014. Web. 11 Apr 2021.

Vancouver:

Dantas SG. Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico . [Internet] [Thesis]. Universidade do Rio Grande do Norte; 2014. [cited 2021 Apr 11]. Available from: http://repositorio.ufrn.br/handle/123456789/13517.

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

Council of Science Editors:

Dantas SG. Crescimento inicial e morfologia foliar em plantas de Enterolobium contortisiliquum (Vell.) Morong. E Erythrina velutina Mart. ex Benth, sob estresse hídrico . [Thesis]. Universidade do Rio Grande do Norte; 2014. Available from: http://repositorio.ufrn.br/handle/123456789/13517

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

24. Marcela Carlos da Silva. Variação morfológica e assimetria flutuante de abelhas euglossinas (Hymenoptera, Apidae) em diferentes áreas e estações distintas em uma reserva de floresta estacional semidecidual.

Degree: 2007, Federal University of Uberlândia

URL: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=2272

►

A sobrevivência dos organismos em ambientes heterogêneos e instáveis requer algumas vezes ajustes fisiológicos e morfológicos, envolvendo complexos mecanismos reguladores. Por outro lado, os organismos… (more)

▼

A sobrevivência dos organismos em ambientes heterogêneos e instáveis requer algumas vezes ajustes fisiológicos e morfológicos, envolvendo complexos mecanismos reguladores. Por outro lado, os organismos também possuem certa habilidade para resistir a distúrbios genéticos ou perturbações ambientais durante seu desenvolvimento, produzindo um fenótipo pré - determinado. O objetivo desse trabalho foi verificar se havia diferenças no tamanho e nos níveis de assimetria flutuante (AF) em duas espécies de abelhas Euglossinae coletadas em duas áreas com distintas interferências antrópica e em duas diferentes estações do ano em uma reserva de Floresta Estacional Semidecidual. A AF é freqüentemente utilizada pra estimar estabilidade do desenvolvimento, além de ser um bom indicativo dos níveis de impacto ambiental. Para cada espécie estudada foram escolhidos, aleatoriamente, 60 machos, em cujas asas foram efetuadas quatro medidas para obtenção de um índice multivariado de tamanho e um índice de AF. Não houve diferenças significativas no tamanho de E. nigrita entre os locais (F = 0,251; P= 0,618) e entre estações (F = 0,568; P= 0,454). Os resultados para E. pleosticta indicaram diferenças significativas no tamanho das abelhas entre as estações (F = 20,947; P= 0,001), mas não evidenciaram diferenças no tamanho em relação aos locais (F = 0,109; P = 0,743). Os machos de E. pleosticta apresentaram maior índice de tamanho durante a estação quente e úmida. O maior índice pluviométrico e a conseqüente maior disponibilidade de alimento durante esta estação podem ter tido um papel importante sobre o aumento de biomassa em E. pleosticta neste período. Em relação à AF, não houve diferenças significativas nos caracteres analisados entre os locais e entre as estações, tanto para E. nigrita quanto E. pleosticta. Mas, para E. pleosticta houve significativa interação entre estação*local em uma das medidas efetuadas. As abelhas coletadas na estação quente e úmida que se encontravam na borda da mata eram mais assimétricas que as abelhas da estação fria e seca que se localizavam no interior da mata. Isto indica que o clima e a interferência antrópica juntos influenciaram a estabilidade do desenvolvimento de E. pleosticta. Contrariamente, o mesmo não ocorreu com E. nigrita, que mostrou - se mais resistente às interferências ambientais no seu programa de desenvolvimento. Assim, seu grande potencial plástico tamponaria as condições de estresse, permitindo a manutenção do seu desenvolvimento, como o estabelecido em condições ótimas ou normais, constituindo assim um eficiente mecanismo de estabilidade do desenvolvimento.

The survival of organisms in heterogeneous and instable environment requires sometimes physiologic and morphologic adjustment, thus involving complex regulator mechanisms. On the other hand, the organisms themselves also have a kind of ability to resist either genetic disturbs or environmental troubles while in development, producing a phenotype pre determined. The main purpose of this study is to verify whether there have been…

Advisors/Committee Members: Warwick Estevam Kerr, Cecilia Lomônaco de Paula, Angelo Pires do Prado.

Subjects/Keywords: Plasticidade fenotípica; Assimetria flutuante; Euglossinae; GENETICA; Abelha; Phenotypic plasticity; Fluctuating asymmetry

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

APA (6^th Edition):

Silva, M. C. d. (2007). Variação morfológica e assimetria flutuante de abelhas euglossinas (Hymenoptera, Apidae) em diferentes áreas e estações distintas em uma reserva de floresta estacional semidecidual. (Thesis). Federal University of Uberlândia. Retrieved from http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=2272

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):

Silva, Marcela Carlos da. “Variação morfológica e assimetria flutuante de abelhas euglossinas (Hymenoptera, Apidae) em diferentes áreas e estações distintas em uma reserva de floresta estacional semidecidual.” 2007. Thesis, Federal University of Uberlândia. Accessed April 11, 2021. http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=2272.

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

MLA Handbook (7^th Edition):

Silva, Marcela Carlos da. “Variação morfológica e assimetria flutuante de abelhas euglossinas (Hymenoptera, Apidae) em diferentes áreas e estações distintas em uma reserva de floresta estacional semidecidual.” 2007. Web. 11 Apr 2021.

Vancouver:

Silva MCd. Variação morfológica e assimetria flutuante de abelhas euglossinas (Hymenoptera, Apidae) em diferentes áreas e estações distintas em uma reserva de floresta estacional semidecidual. [Internet] [Thesis]. Federal University of Uberlândia; 2007. [cited 2021 Apr 11]. Available from: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=2272.

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

Council of Science Editors:

Silva MCd. Variação morfológica e assimetria flutuante de abelhas euglossinas (Hymenoptera, Apidae) em diferentes áreas e estações distintas em uma reserva de floresta estacional semidecidual. [Thesis]. Federal University of Uberlândia; 2007. Available from: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=2272

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

McMaster University

25. File, Amanda. EFFECTS OF PLANT SOCIAL ENVIRONMENT ON THE MUTUALISTIC INTERACTIONS BETWEEN PLANTS AND MYCORRHIZAL FUNGI.

Degree: PhD, 2013, McMaster University

URL: http://hdl.handle.net/11375/15289

►

Plants and mycorrhizal fungi form a mutualism in which plants donate carbon to the fungus and, in return, receive benefits such as increased nutrient… (more)

▼

Plants and mycorrhizal fungi form a mutualism in which plants donate carbon to the fungus and, in return, receive benefits such as increased nutrient uptake and water. Mycorrhizal fungi colonize plant roots, forming nutrient exchange structures. The fungi also colonize the soil by growing long strands of hyphae that forage for nutrients and attach plants, forming a common mycorrhizal network (CMN). Plants attached to a well-supported CMN will receive greater benefits than those attached to a lesser CMN because the more carbon donations the fungal partner receives, the more it can grow and colonize the soil, accessing hard to reach soil nutrients. Kin selection theory predicts that relatives should donate more carbon to the fungal partner than non-relatives because benefits gained by neighbouring relatives through the CMN lead to inclusive fitness gains. Thus, social environment, i.e. relatedness of the group, could affect the mycorrhizal mutualism. Moreover, the presence of mycorrhizal fungi in the soil could affect plant responses to their social environment. For my PhD thesis I have investigated whether mycorrhizal fungi respond to plant social environment and whether the presence of mycorrhizal fungi affects plant responses to relatedness. I have addressed these topics in three greenhouse studies and two field studies, using herbaceous plants and trees. I have found strong evidence that siblings have an increased association with their mycorrhizal partner compared to strangers, resulting in greater benefits for siblings. Taken together, the results from this thesis demonstrate that the ability for plants to recognize kin has implications beyond intra-specific competitive interactions and that plant social environment has important effects on a widespread inter-specific mutualism. Additionally, the recently discovered phenomenon of plant kin recognition has been put into the context of mycorrhizae, and I have shown that mycorrhizal plants respond differently to their social environment than non-mycorrhizal plants.

Doctor of Philosophy (PhD)

Advisors/Committee Members: Dudley, Susan, Balshine, Sigal, Rollo, CD, Biology.

Subjects/Keywords: plants; kin recognition; mycorrhiza; phenotypic plasticity; mutualism; Biology; Biology

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

APA (6^th Edition):

File, A. (2013). EFFECTS OF PLANT SOCIAL ENVIRONMENT ON THE MUTUALISTIC INTERACTIONS BETWEEN PLANTS AND MYCORRHIZAL FUNGI. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/15289

Chicago Manual of Style (16^th Edition):

File, Amanda. “EFFECTS OF PLANT SOCIAL ENVIRONMENT ON THE MUTUALISTIC INTERACTIONS BETWEEN PLANTS AND MYCORRHIZAL FUNGI.” 2013. Doctoral Dissertation, McMaster University. Accessed April 11, 2021. http://hdl.handle.net/11375/15289.

MLA Handbook (7^th Edition):

File, Amanda. “EFFECTS OF PLANT SOCIAL ENVIRONMENT ON THE MUTUALISTIC INTERACTIONS BETWEEN PLANTS AND MYCORRHIZAL FUNGI.” 2013. Web. 11 Apr 2021.

Vancouver:

File A. EFFECTS OF PLANT SOCIAL ENVIRONMENT ON THE MUTUALISTIC INTERACTIONS BETWEEN PLANTS AND MYCORRHIZAL FUNGI. [Internet] [Doctoral dissertation]. McMaster University; 2013. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/11375/15289.

Council of Science Editors:

File A. EFFECTS OF PLANT SOCIAL ENVIRONMENT ON THE MUTUALISTIC INTERACTIONS BETWEEN PLANTS AND MYCORRHIZAL FUNGI. [Doctoral Dissertation]. McMaster University; 2013. Available from: http://hdl.handle.net/11375/15289

Penn State University

26. RUIZ, DANNISE V. Molecular investigations of deep-sea black coral ecology.

Degree: 2014, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/23606

► The black coral Leiopathes glaberrima is one of the most common species of Antipatharia (Cnidaria: Anthozoa) in the Gulf of Mexico. Dense aggregations of Leiopathes… (more)

▼ The black coral Leiopathes glaberrima is one of the most common species of Antipatharia (Cnidaria: Anthozoa) in the Gulf of Mexico. Dense aggregations of Leiopathes fulfill the role of a foundation species as their branching morphology and vertical growth provide substrate and refuge for a variety of deep-sea organisms. This thesis focused on the microsatellite content, spatial distribution, genetic differentiation and response to chemical stress of Leiopathes glaberrima in the Northern Gulf of Mexico. Microsatellite markers are useful in determining population genetic patterns and in detecting cryptic species yet they can be difficult to develop for Cnidaria. To elucidate the ancestral state of microsatellite dynamics in basal metazoans and develop molecular tools for L. glaberrima, abundance and type of microsatellite motifs were studied in eleven Cnidarian species representing two classes, three subclasses and eight orders within the phylum. Hierarchical clustering and log likelihood ratio tests revealed a weak relationship between phylogeny and microsatellite content. Further, comparisons between cnidaria harboring intracellular dinoflagellates and those that do not, show microsatellite coverage is higher in the latter group. The observed microsatellite patterns support previous studies that found tri- and tetranucleotides to be the most abundant motifs in invertebrates. Differences in microsatellite coverage and composition between symbiotic and non-symbiotic cnidaria suggest the presence/absence of dinoflagellates might place restrictions on the host genome. The microsatellite survey yielded 10 novel microsatellite markers for the study of L. glaberrima that were used to study gene flow and mating patterns of this species. L. glaberrima inhabits carbonate outcrops in the Northern Gulf of Mexico, where multiple color morphotypes grow in sympatry. Based on both phylogenetic analysis and colony morphology these color morphotypes constitute one species. However, gene flow was disrupted between and within two nearby hard ground sites (distance = 36.4 km). The lineages and color phenotypes occurred in different microhabitats and models of maximum entropy suggested that depth and slope might influence their distribution. Thus, L. glaberrima is one phenotypically plastic foundation species employing a mixed reproductive strategy in the Northern Gulf of Mexico. Utilizing a mixed mating strategy might enable this long-lived species to balance local recruitment with occasional long-distance dispersal to colonize new sites in an environment where habitat is limited. In the Gulf of Mexico, cold-water corals are mostly found on carbonate outcrops of authigenic origin, which occur in areas associated with hydrocarbon prospecting, drilling and fishing. The recent 2010 oil spill from the MC252 well site exemplified effects of these activities on the deep-sea fauna, and uncovered gaps in the baseline information on deep-sea ecosystems. Here, I used differential gene expression analyses to describe and quantify the… Advisors/Committee Members: Iliana Brigitta Baums, Dissertation Advisor/Co-Advisor, Charles Raymond Fisher Jr., Committee Chair/Co-Chair, Claude Walker Depamphilis, Committee Member, Christopher Howard House, Special Member.

Subjects/Keywords: Population genetics; reproductive strategy; phenotypic plasticity; gene expression; black corals

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

APA (6^th Edition):

RUIZ, . D. V. (2014). Molecular investigations of deep-sea black coral ecology. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/23606

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):

RUIZ, DANNISE V. “Molecular investigations of deep-sea black coral ecology.” 2014. Thesis, Penn State University. Accessed April 11, 2021. https://submit-etda.libraries.psu.edu/catalog/23606.

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

MLA Handbook (7^th Edition):

RUIZ, DANNISE V. “Molecular investigations of deep-sea black coral ecology.” 2014. Web. 11 Apr 2021.

Vancouver:

RUIZ DV. Molecular investigations of deep-sea black coral ecology. [Internet] [Thesis]. Penn State University; 2014. [cited 2021 Apr 11]. Available from: https://submit-etda.libraries.psu.edu/catalog/23606.

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

Council of Science Editors:

RUIZ DV. Molecular investigations of deep-sea black coral ecology. [Thesis]. Penn State University; 2014. Available from: https://submit-etda.libraries.psu.edu/catalog/23606

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

McMaster University

27. Yakubu, Yussif. ALTRUISM: ANALYSIS OF A PARADOX.

Degree: MA, 2011, McMaster University

URL: http://hdl.handle.net/11375/11406

►

Theories that engender fundamental transformations in our world view seldom come perfect from the outset for two reasons. First, the empirical discoveries and theoretical… (more)

Subjects/Keywords: Altruism; Phenotypic Plasticity; Evolution; Philosophy of Science; Evolution

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

APA (6^th Edition):

Yakubu, Y. (2011). ALTRUISM: ANALYSIS OF A PARADOX. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/11406

Chicago Manual of Style (16^th Edition):

Yakubu, Yussif. “ALTRUISM: ANALYSIS OF A PARADOX.” 2011. Masters Thesis, McMaster University. Accessed April 11, 2021. http://hdl.handle.net/11375/11406.

MLA Handbook (7^th Edition):

Yakubu, Yussif. “ALTRUISM: ANALYSIS OF A PARADOX.” 2011. Web. 11 Apr 2021.

Vancouver:

Yakubu Y. ALTRUISM: ANALYSIS OF A PARADOX. [Internet] [Masters thesis]. McMaster University; 2011. [cited 2021 Apr 11]. Available from: http://hdl.handle.net/11375/11406.

Council of Science Editors:

Yakubu Y. ALTRUISM: ANALYSIS OF A PARADOX. [Masters Thesis]. McMaster University; 2011. Available from: http://hdl.handle.net/11375/11406

Purdue University

28. Touzinsky, Katherine Flynn. Morphological Plasticity of Invasive Silver Carp in Divergent Midwestern Rivers.

Degree: MS, Ecological Sciences and Engineering, 2015, Purdue University

URL: https://docs.lib.purdue.edu/open_access_theses/1205

► In the past decade, silver carp (SC; Hypopthalmicthys molitrix) have incited a great quantity of scientific research because their establishment and success in the Midwestern… (more)

▼ In the past decade, silver carp (SC; Hypopthalmicthys molitrix) have incited a great quantity of scientific research because their establishment and success in the Midwestern U.S. has led to concerns that they could invade the Great Lakes Basin. These previous studies have identified phenotypic plasticity in SC behavior and spawning as they invade novel environments. Although divergent habitats have been shown to elicit morphological plasticity in multiple fish species, similar research has not been conducted for SC despite their observed plasticity in other traits. I examined SC collected from two hydrogeomorphically divergent rivers, the Illinois River (IR) and middle Wabash River (MWR), as examples of rivers that support SC populations at different invasion stages. I compared differences in SC body shapes through geometric morphometric analysis and life history characteristics through population demographics between rivers. MWRSC were in better condition, lived longer, attained greater total lengths, and had higher GSIs than IRSC. Morphometric analysis revealed a significant divergence in body morphology between MWRSC and IRSC, whereby MWRSC had deeper body sections and narrow, tapered heads, while IRSC had shallower bodies and deeper heads. Principle component analysis indicated that contrasts in morphology were most strongly associated with river, as opposed to other factors like sex, hybrid status, and time sampled. While I do not assert causal evidence for the difference in shape based on specific environmental characteristics of the two rivers, I speculate that IRSC and MWRSC are undergoing different selection pressures due to population demographics and environmental characteristics of the two rivers. Regardless of the specific causal factors, it is clear that body shapes were different between the two rivers, suggesting that location-based selective agents are driving phenotypic outcomes in invasive SC. Advisors/Committee Members: Reuben R Goforth, Tomas O Höök, Jon J Amberg.

Subjects/Keywords: Asian carp; geometric morphometrics; Hypophthalmichthys molitrix; invasive species; phenotypic plasticity

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

APA (6^th Edition):

Touzinsky, K. F. (2015). Morphological Plasticity of Invasive Silver Carp in Divergent Midwestern Rivers. (Thesis). Purdue University. Retrieved from https://docs.lib.purdue.edu/open_access_theses/1205

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):

Touzinsky, Katherine Flynn. “Morphological Plasticity of Invasive Silver Carp in Divergent Midwestern Rivers.” 2015. Thesis, Purdue University. Accessed April 11, 2021. https://docs.lib.purdue.edu/open_access_theses/1205.

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

MLA Handbook (7^th Edition):

Touzinsky, Katherine Flynn. “Morphological Plasticity of Invasive Silver Carp in Divergent Midwestern Rivers.” 2015. Web. 11 Apr 2021.

Vancouver:

Touzinsky KF. Morphological Plasticity of Invasive Silver Carp in Divergent Midwestern Rivers. [Internet] [Thesis]. Purdue University; 2015. [cited 2021 Apr 11]. Available from: https://docs.lib.purdue.edu/open_access_theses/1205.

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

Council of Science Editors:

Touzinsky KF. Morphological Plasticity of Invasive Silver Carp in Divergent Midwestern Rivers. [Thesis]. Purdue University; 2015. Available from: https://docs.lib.purdue.edu/open_access_theses/1205

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

University of Guelph

29. Turko, Andrew. INTEGRATION OF BEHAVIOURAL, PHYSIOLOGICAL, AND MORPHOLOGICAL PHENOTYPES IN THE AMPHIBIOUS FISH KRYPTOLEBIAS MARMORATUS.

Degree: MS, Department of Integrative Biology, 2011, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3216

► The self-fertilizing mangrove rivulus, Kryptolebias marmoratus, is an amphibious fish capable of reversible gill remodelling when moving between aquatic and terrestrial environments. In this thesis… (more)

Subjects/Keywords: Phenotypic plasticity; respiration; gill remodelling; mangrove rivulus; Kryptolebias marmoratus; amphibious fish

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

APA (6^th Edition):

Turko, A. (2011). INTEGRATION OF BEHAVIOURAL, PHYSIOLOGICAL, AND MORPHOLOGICAL PHENOTYPES IN THE AMPHIBIOUS FISH KRYPTOLEBIAS MARMORATUS. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3216

Chicago Manual of Style (16^th Edition):

Turko, Andrew. “INTEGRATION OF BEHAVIOURAL, PHYSIOLOGICAL, AND MORPHOLOGICAL PHENOTYPES IN THE AMPHIBIOUS FISH KRYPTOLEBIAS MARMORATUS.” 2011. Masters Thesis, University of Guelph. Accessed April 11, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3216.

MLA Handbook (7^th Edition):

Turko, Andrew. “INTEGRATION OF BEHAVIOURAL, PHYSIOLOGICAL, AND MORPHOLOGICAL PHENOTYPES IN THE AMPHIBIOUS FISH KRYPTOLEBIAS MARMORATUS.” 2011. Web. 11 Apr 2021.

Vancouver:

Turko A. INTEGRATION OF BEHAVIOURAL, PHYSIOLOGICAL, AND MORPHOLOGICAL PHENOTYPES IN THE AMPHIBIOUS FISH KRYPTOLEBIAS MARMORATUS. [Internet] [Masters thesis]. University of Guelph; 2011. [cited 2021 Apr 11]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3216.

Council of Science Editors:

Turko A. INTEGRATION OF BEHAVIOURAL, PHYSIOLOGICAL, AND MORPHOLOGICAL PHENOTYPES IN THE AMPHIBIOUS FISH KRYPTOLEBIAS MARMORATUS. [Masters Thesis]. University of Guelph; 2011. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3216

University of Wisconsin – Oshkosh

30. Rubin, Matthew J. Quantitative trait loci and global expression patterns offer insight into phenotypic plasticity.

Degree: MS, Biology, 2011, University of Wisconsin – Oshkosh

URL: http://digital.library.wisc.edu/1793/56882

►

A Thesis Submitted In Partial Fulfillment of the Requirements For the Degree of Master of Science - Biology

Phenotypic plasticity, i.e. changes in phenotype with… (more)

▼

A Thesis Submitted In Partial Fulfillment of the Requirements For the Degree of Master of Science - Biology

Phenotypic plasticity, i.e. changes in phenotype with environment, may allow organisms to produce optimal phenotypes in all environments (adaptive plasticity). There is considerable discussion about the genetic mechanisms for phenotypic plasticity. However, there is some agreement that changes in gene expression must be involved. In order to examine how natural selection has acted on phenotypic plasticity on the trait bolting time trait (transition to reproduction) and gene expression patterns in past populations, a set of Recombinant Inbred Lines (RILs) of Arabidopsis thaliana were used. We tested the effect of cold-treating seeds (stratification) on bolting time in Arabidopsis thaliana. Cold stratification of seeds may be one environmental factor contributing to variation in spring versus fall germination in A. thaliana populations. Variation in both the direction and degree of plasticity was observed in a set of 120 RILs screened; genotypic selection analysis showed that past selection had favored bolting earlier in both environments. Three RILs that displayed extreme plasticities for bolting time in opposing directions across cold treatments were identified and global gene expression patterns were measured in a microarray experiment. A total of 294 genes were identified as being differentially expressed across cold treatments for the three extreme RILs (Fold change of >2; p-value<0.05). In addition, Quantitative Trait Loci (QTL) for bolting time were mapped in the complete set of RILs. Five QTL were mapped in the cold environment and three QTL were mapped in the no-cold environment explaining 40% and 30% of the observed phenotypic variation, respectively. QTL underlying variation in bolting time were screened for differentially expressed genes from the microarray study to identify candidate genes. Ninety-three of the identified genes colocalized to bolting time QTL, with kinesis and transferases being overrepresented in the expressed QTLs. Few studies have combined microarray and QTL data, and this study will offer insight into the genetic mechanism of phenotypic plasticity.

Advisors/Committee Members: Dorn, Lisa.

Subjects/Keywords: DNA microarrays; Climatic changes; Gene mapping; Arabidopsis thaliana; Phenotypic plasticity

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

APA (6^th Edition):

Rubin, M. J. (2011). Quantitative trait loci and global expression patterns offer insight into phenotypic plasticity. (Masters Thesis). University of Wisconsin – Oshkosh. Retrieved from http://digital.library.wisc.edu/1793/56882

Chicago Manual of Style (16^th Edition):

Rubin, Matthew J. “Quantitative trait loci and global expression patterns offer insight into phenotypic plasticity.” 2011. Masters Thesis, University of Wisconsin – Oshkosh. Accessed April 11, 2021. http://digital.library.wisc.edu/1793/56882.

MLA Handbook (7^th Edition):

Rubin, Matthew J. “Quantitative trait loci and global expression patterns offer insight into phenotypic plasticity.” 2011. Web. 11 Apr 2021.

Vancouver:

Rubin MJ. Quantitative trait loci and global expression patterns offer insight into phenotypic plasticity. [Internet] [Masters thesis]. University of Wisconsin – Oshkosh; 2011. [cited 2021 Apr 11]. Available from: http://digital.library.wisc.edu/1793/56882.

Council of Science Editors:

Rubin MJ. Quantitative trait loci and global expression patterns offer insight into phenotypic plasticity. [Masters Thesis]. University of Wisconsin – Oshkosh; 2011. Available from: http://digital.library.wisc.edu/1793/56882

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Open Access Theses and Dissertations