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Texas A&M University
1.
Partridge, Charlyn G.
The Effect of Environmental Contaminants on Mating Dynamics and Population Viability in a Sex-Role-Reversed Pipefish.
Degree: PhD, Zoology, 2010, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7324
► Understanding how anthropogenic activity impacts the health and viability of wildlife populations is one of the most important tasks of environmental biology. A key concern…
(more)
▼ Understanding how anthropogenic activity impacts the health and viability of wildlife
populations is one of the most important tasks of environmental biology. A key concern
related to bi-products of human activity is the accumulation of environmental pollutants
within aquatic environments. Pollutants such as endocrine disruptors and heavy metals
have the potential to impact both human and wildlife populations in contaminated areas.
While much research has focused on how these compounds impact natural selection
processes, such as viability and reproduction, their effect on sexual selection processes is
not as clear. The goal of this dissertation was to address how environmental
contaminants impact sexual selection processes in a sex-role reversed pipefish and
evaluate how these effects may impact long-term population viability. Here we show
that short periods of exposure to environmentally relevant concentrations of a synthetic
estrogen result in male pipefish with female-like secondary sexual traits. While these
males are capable of reproduction, exposed males are discriminated against by females
in mate choice tests. In natural populations, this type of discrimination could reduce male
mating opportunities, potentially reducing their reproductive success. In an
additional component of this dissertation, it was discovered that pipefish populations
around Mobile Bay, specifically Weeks Bay, are currently being exposed to significantly
elevated levels of mercury. These populations are genetically distinct from coastal
populations but moderate levels of gene flow occur among sites, and gene flow between
contaminated and non-contaminated population may be influencing how environmental
contaminants are impacting genetic diversity and population viability. In the case of
endocrine disruptors, migration between contaminated and non-contaminated sites may
negatively impact population viability. Morphological traits induced with exposure to
contaminants may be maintained for extended periods of time, therefore, the effect the
exposed phenotype has on
mating dynamics and sexual selection could be carried to
non-contaminated sites if exposed individuals move to new populations. On the other
hand, immigration of individuals from non-contaminated sites into contaminated areas
may help maintain genetic diversity within exposed populations. In conclusion, the
work presented in this dissertation shows that the presence of environmental toxins can
significantly impact sexual selection processes, which in turn can have profound effects
on the viability and future evolutionary trajectory of populations. Future work in this
area should not only address how these toxins impact individual fitness, but should also
address how population structure may be influencing the severity of these compounds on
natural populations.
Advisors/Committee Members: Jones, Adam G. (advisor), Rosenthal, Gil (committee member), MacKenzie, Duncan (committee member), DeWitt, Thomas J. (committee member).
Subjects/Keywords: pipefish; endocrine disruptors; EE2; mating dynamics; population structure
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APA (6th Edition):
Partridge, C. G. (2010). The Effect of Environmental Contaminants on Mating Dynamics and Population Viability in a Sex-Role-Reversed Pipefish. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7324
Chicago Manual of Style (16th Edition):
Partridge, Charlyn G. “The Effect of Environmental Contaminants on Mating Dynamics and Population Viability in a Sex-Role-Reversed Pipefish.” 2010. Doctoral Dissertation, Texas A&M University. Accessed April 22, 2021.
http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7324.
MLA Handbook (7th Edition):
Partridge, Charlyn G. “The Effect of Environmental Contaminants on Mating Dynamics and Population Viability in a Sex-Role-Reversed Pipefish.” 2010. Web. 22 Apr 2021.
Vancouver:
Partridge CG. The Effect of Environmental Contaminants on Mating Dynamics and Population Viability in a Sex-Role-Reversed Pipefish. [Internet] [Doctoral dissertation]. Texas A&M University; 2010. [cited 2021 Apr 22].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7324.
Council of Science Editors:
Partridge CG. The Effect of Environmental Contaminants on Mating Dynamics and Population Viability in a Sex-Role-Reversed Pipefish. [Doctoral Dissertation]. Texas A&M University; 2010. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7324
2.
Trogdon, Michael.
Combining Biochemical Signaling and Mechanics to Understand Yeast Mating Morphogenesis.
Degree: 2018, University of California – eScholarship, University of California
URL: http://www.escholarship.org/uc/item/8bk2g0pd
► How biological systems are able to form and maintain such a wide variety of patterns and structures is one of the central questions in science.…
(more)
▼ How biological systems are able to form and maintain such a wide variety of patterns and structures is one of the central questions in science. In this dissertation we focus on one example of pattern formation and morphogenesis found in yeast cells. Specifically, we present our work related to understanding how yeast cells are able to change their physical structure and form projections during mating. This is an interesting example of a problem that deals with both intracellular protein signaling and cell mechanics. One issue that has become increasingly important to understanding the dynamics of proteins inside of single cells is the inherent randomness or stochasticity of biochemical reactions. As mathematical modeling and computational techniques have become essential tools in systems biology over the last half century, we first mention our software framework for the efficient simulation of spatial stochastic reaction-diffusion problems which can leverage high-performance computing and cloud infrastructure. This work serves as the basis for our investigation into yeast mating morphogenesis. The first step of yeast mating projection growth is the localization (or polarization) of proteins on the cell membrane. This is a well-studied, yet not fully understood, example of pattern formation in biology. In this dissertation we discuss several mathematical models of polarization and their various properties. When a yeast cell forms a mating projection the cell shape naturally changes in time. To deal with this from a mathematical modeling standpoint, we have developed a novel algorithm for the simulation of spatial stochastic dynamics on moving domains. These technical advances have led to new insight into the biology of yeast mating morphogenesis. In particular, we have elucidated the effects that complex geometries can have on current models of polarization. While polarization is certainly necessary for yeast mating morphogenesis, it is not the whole story. Yeast cells have a cell wall that is responsible for defining cell shape and providing mechanical integrity. To further explore mating projection growth, we have developed methods to couple models of polarization with physically based models for the mechanics of the cell wall. This coupling of biochemical signaling and mechanics allows for a more systems level understanding of yeast mating morphogenesis. We conclude by summarizing our findings about the coupling of polarization and mechanics, and discussing which biological links between the two are important from a mathematical modeling perspective.
Subjects/Keywords: Biophysics; Computational chemistry; Biomechanics; Mathematical Modeling; Polarization; Protein Signaling; Reaction-Diffusion Dynamics; Spatial Stochastic Simulation; Yeast Mating
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Trogdon, M. (2018). Combining Biochemical Signaling and Mechanics to Understand Yeast Mating Morphogenesis. (Thesis). University of California – eScholarship, University of California. Retrieved from http://www.escholarship.org/uc/item/8bk2g0pd
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Trogdon, Michael. “Combining Biochemical Signaling and Mechanics to Understand Yeast Mating Morphogenesis.” 2018. Thesis, University of California – eScholarship, University of California. Accessed April 22, 2021.
http://www.escholarship.org/uc/item/8bk2g0pd.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Trogdon, Michael. “Combining Biochemical Signaling and Mechanics to Understand Yeast Mating Morphogenesis.” 2018. Web. 22 Apr 2021.
Vancouver:
Trogdon M. Combining Biochemical Signaling and Mechanics to Understand Yeast Mating Morphogenesis. [Internet] [Thesis]. University of California – eScholarship, University of California; 2018. [cited 2021 Apr 22].
Available from: http://www.escholarship.org/uc/item/8bk2g0pd.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Trogdon M. Combining Biochemical Signaling and Mechanics to Understand Yeast Mating Morphogenesis. [Thesis]. University of California – eScholarship, University of California; 2018. Available from: http://www.escholarship.org/uc/item/8bk2g0pd
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
3.
Pedersen, Lars Bjørnstad.
An analysis of a shared mating in V2.
Degree: Physics, 2014, Umeå University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96855
► In this master thesis we investigate, from a topological point of view and without applying Thurston´s Theorem, why the mating of the so called…
(more)
▼ In this master thesis we investigate, from a topological point of view and without applying Thurston´s Theorem, why the mating of the so called basilica polynomial <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-1%7D(z)=z%5E%7B2%7D-1" /> and the dendrite <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7Bi%7D(z)=z%5E%7B2%7D+i" /> is shared with the mating of <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-1%7D" /> and the dendrite <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-i%7D(z)=z%5E%7B2%7D-i" />. Both these matings equal the rational map <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?R_%7B3%7D(z)=%5Cfrac%7B3%7D%7Bz%5E%7B2%7D+2z%7D" />. Defined in the thesis are for both matings homeomorphic changes of coordinates<img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?%5Cpsi_%7B-1%7D%5E%7B%5Cpm%7D" /> from the set <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?L=%5Coverset%7B%5Ccirc%7D%7BK%7D%5Cleft(f_%7B-1%7D%20%5Cright)%5Ccup%5Cleft(%5Ccup_%7Bn=0%7D%5E%7B%5Cinfty%7Df_%7B-1%7D%5E%7B%5Ccirc(-n)%7D(z_%7B%5Calpha%7D)%5Cright)" /> to the Fatou and Julia set of <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?R_%7B3%7D" />. Here <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?K%5Cleft(f_%7B-1%7D%20%5Cright)" /> is the filled Julia set of <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-1%7D" /> and <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?z_%7B%5Calpha%7D" /> is the <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?%5Calpha" />-fixed point of <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?K%5Cleft(f_%7B-1%7D%20%5Cright)" />.
I detta examensarbete undersöker vi, från en topologisk synvinkel och utan applicering av Thurstons teorem, varför matchningen av det så kallade basilikapolynomet <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-1%7D(z)=z%5E%7B2%7D-1" /> och dendriten <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7Bi%7D(z)=z%5E%7B2%7D+i" /> är delad med matchningen av <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-1%7D" /> och dendriten <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?f_%7B-i%7D(z)=z%5E%7B2%7D-i" />. Båda dessa matchningar är lika med den rationella avbildningen <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?R_%7B3%7D(z)=%5Cfrac%7B3%7D%7Bz%5E%7B2%7D+2z%7D" />. Definierat i examensarbetet är för båda matchningarna homoemorfa koordinatbyten<img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?%5Cpsi_%7B-1%7D%5E%7B%5Cpm%7D" /> från mängden<img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?L=%5Coverset%7B%5Ccirc%7D%7BK%7D%5Cleft(f_%7B-1%7D%20%5Cright)%5Ccup%5Cleft(%5Ccup_%7Bn=0%7D%5E%7B%5Cinfty%7Df_%7B-1%7D%5E%7B%5Ccirc(-n)%7D(z_%7B%5Calpha%7D)%5Cright)" /> till Fatou- och Juliamängden av <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?R_%7B3%7D" />. Här är <img…
Subjects/Keywords: Complex dynamics mating matings basilica dendrite Julia Fatou; komplex dynamik matchning matchningar basilika dendrit Juliamängd Fatoumängd
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pedersen, L. B. (2014). An analysis of a shared mating in V2. (Thesis). Umeå University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96855
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pedersen, Lars Bjørnstad. “An analysis of a shared mating in V2.” 2014. Thesis, Umeå University. Accessed April 22, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96855.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pedersen, Lars Bjørnstad. “An analysis of a shared mating in V2.” 2014. Web. 22 Apr 2021.
Vancouver:
Pedersen LB. An analysis of a shared mating in V2. [Internet] [Thesis]. Umeå University; 2014. [cited 2021 Apr 22].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96855.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pedersen LB. An analysis of a shared mating in V2. [Thesis]. Umeå University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96855
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Adelaide
4.
Ziembicki, Mark.
Ecology and movements of the Australian bustard Ardeotis australis in a dynamic landscape.
Degree: 2010, University of Adelaide
URL: http://hdl.handle.net/2440/61906
► Australia’s fauna exhibit a range of adaptations to cope with the significant climatic and environmental variability that characterises the Australian continent. Such adaptations include, among…
(more)
▼ Australia’s fauna exhibit a range of adaptations to cope with the significant climatic and environmental variability that characterises the Australian continent. Such adaptations include, among others, boom-bust population fluctuations, diet switching, tolerance of sub-optimal conditions and broad-scale movements, and may combine in different ways to determine an organism’s response to prevailing environmental conditions. Among birds, arguably the most significant strategy for coping with change is their mobility. Australia’s birds exhibit a variety of movement strategies ranging from regular migration to nomadism and irruptive movements. The predominance of broad-scale dispersive and opportunistic movements, and the flexibility in employment of different movement strategies within and between species, largely distinguish Australian birds from many of their better studied northern hemisphere counterparts. These movements and their drivers, however, remain poorly understood.
The Australian Bustard is representative of a suite of Australian terrestrial birds that employ complex movement strategies and responses to environmental variability. The bustard may be an amenable model for examining broad-scale distribution and movement patterns in relation to dynamic environments because of its ranging habits and widespread distribution, its large size enabling long-term satellite tracking and because it is well known and easily identifiable, making it a suitable candidate for community-based survey efforts. However, any such studies require knowledge of the basic ecology of a focal species. Accordingly, this study aimed to integrate broad-scale analyses of the distribution and movement patterns of bustard with detailed, site-specific ecological studies of the bustard at two sites in Australia’s tropical savannas.
A near continental-scale mail survey of rangeland users revealed that the bustard’s strongholds are in the northern tropical savannas and that the species employs variable movement strategies across its range. Seasonality of bustard occurrence and sedentariness were a feature of regions characterised by seasonally predictable conditions. Seasonal patterns were also evident in more climatically unpredictable regions, although here they appeared increasingly overlaid by more nomadic or opportunistic movements as a result of longer term variation in rainfall patterns. Survey respondents also noted that bustards were associated with fire, grasshopper outbreaks, crop agriculture and drought.
An analogous study employing satellite telemetry aimed to examine broad-scale movement patterns of individual bustards in regions that differed in their rainfall variability. Although based on a relatively small number of tracked individuals, results generally corresponded to those of the broad-scale mail survey. All individuals in the wet-dry tropics were largely sedentary or made small-scale seasonal or nomadic movements. Two individuals tracked in more climatically variable regions made broader-scale movements, with the…
Advisors/Committee Members: Paton, David Cleland (advisor), School of Earth and Environmental Sciences (school).
Subjects/Keywords: Australian bustard; Ardeotis australis; migration; nomadism; ecology; movements; conservation; population dynamics; diet; behaviour; satellite tracking; mating system; lekking; Bustards.; Birds Breeding Australia, Northern.; Birds Ecology Australia, Northern.; Animal radio tracking.; Birds Conservation Australia.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ziembicki, M. (2010). Ecology and movements of the Australian bustard Ardeotis australis in a dynamic landscape. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/61906
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ziembicki, Mark. “Ecology and movements of the Australian bustard Ardeotis australis in a dynamic landscape.” 2010. Thesis, University of Adelaide. Accessed April 22, 2021.
http://hdl.handle.net/2440/61906.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ziembicki, Mark. “Ecology and movements of the Australian bustard Ardeotis australis in a dynamic landscape.” 2010. Web. 22 Apr 2021.
Vancouver:
Ziembicki M. Ecology and movements of the Australian bustard Ardeotis australis in a dynamic landscape. [Internet] [Thesis]. University of Adelaide; 2010. [cited 2021 Apr 22].
Available from: http://hdl.handle.net/2440/61906.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ziembicki M. Ecology and movements of the Australian bustard Ardeotis australis in a dynamic landscape. [Thesis]. University of Adelaide; 2010. Available from: http://hdl.handle.net/2440/61906
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
5.
Robertson, Denice N.
The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>.
Degree: PhD, Biological Sciences, 2001, Old Dominion University
URL: 9780493565859
;
https://digitalcommons.odu.edu/biology_etds/98
► The target-area hypothesis, based on the theory of island biogeography, predicts that larger islands are more effective at intercepting passive immigrants. Most marine invertebrates…
(more)
▼ The target-area hypothesis, based on the theory of island biogeography, predicts that larger islands are more effective at intercepting passive immigrants. Most marine invertebrates have meroplanktonic larvae and open population
dynamics, so immigration to populations in isolated benthic habitats is primarily by pelagic larval recruits. Thus, recruitment to isolated habitat “islands” may be more continuous and predictable on large islands than on small ones. Consequently, populations on large islands should not only be larger than those on small islands, but should also have more evenly distributed size structures. These differences in size structure among populations in isolated habitats of differing size could have profound impacts on the local reproductive success of species if
mating is size-dependent or if fecundity is related to male or female size.
I used laboratory experiments and field observations to test these predictions of the target-area hypothesis by determining if patch reef size influences the size structure and reproductive success of isolated populations of the spotted spiny lobster,
Panulirus guttatus in the Florida Keys, Florida (USA). In chapter I, I provide a general introduction to the problem. Chapter II describes how growth and size-at-maturity of
P. guttatus in isolated populations on coral patch reefs may be impacted by trade-offs with predation, food limitation and reproduction. In Chapter III, I explore the
mating dynamics of
P. guttatus as a function of different population size structure distributions that might occur on small and large patch reefs. Finally, in Chapter IV I examine the population size, size structure, and reproductive success of
P. guttatus on patch reefs of varying size. Chapter V is a synopsis of these studies.
I found that the growth of
P. guttatus declined significantly with the onset of reproductive activity. Although this species matures at a small size, its age-at-maturity is similar to other spiny lobster species in comparable environments. Male
P. guttatus compete for mates, but it is female choice that establishes the size assortative
mating system I observed in this species. Fecundity is positively related to both male and female size, which suggests that fertilization success may at times be limited by sperm availability.
The abundance of
P. guttatus increased with reef size and population size structure was more evenly distributed on larger reefs, as predicted by the target-area hypothesis. Total reproductive output for local populations increased significantly with reef size, but more importantly reproductive output (i.e., success) was significantly more variable on small reefs. For isolated populations with limited immigration and size-dependent fecundity, population size, size structure, and reproductive output are impacted by the size of habitat patches on which they are resident.
Advisors/Committee Members: Mark J. Butler IV, Fred C. Dobbs, Cynthia M. Jones.
Subjects/Keywords: Mating; Panulirus guttatus; Population dynamics; Spotted spiny lobster; Ecology and Evolutionary Biology; Marine Biology; Oceanography
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Robertson, D. N. (2001). The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>. (Doctoral Dissertation). Old Dominion University. Retrieved from 9780493565859 ; https://digitalcommons.odu.edu/biology_etds/98
Chicago Manual of Style (16th Edition):
Robertson, Denice N. “The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>.” 2001. Doctoral Dissertation, Old Dominion University. Accessed April 22, 2021.
9780493565859 ; https://digitalcommons.odu.edu/biology_etds/98.
MLA Handbook (7th Edition):
Robertson, Denice N. “The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>.” 2001. Web. 22 Apr 2021.
Vancouver:
Robertson DN. The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>. [Internet] [Doctoral dissertation]. Old Dominion University; 2001. [cited 2021 Apr 22].
Available from: 9780493565859 ; https://digitalcommons.odu.edu/biology_etds/98.
Council of Science Editors:
Robertson DN. The Implications of the Target-Area Hypothesis on the Population Dynamics of the Spotted Spiny Lobster, <i>Panulirus guttatus</i>. [Doctoral Dissertation]. Old Dominion University; 2001. Available from: 9780493565859 ; https://digitalcommons.odu.edu/biology_etds/98

Leiden University
6.
Durinx, M.
Life amidst singularities.
Degree: 2008, Leiden University
URL: http://hdl.handle.net/1887/13144
► "Adaptive dynamics" is the study of evolution driven by rare mutations with small effects. The essential tool is the "invasion fitness", the expected number of…
(more)
▼ "Adaptive
dynamics" is the study of evolution driven by rare mutations with small effects. The essential tool is the "invasion fitness", the expected number of offspring for a rare mutant in a resident community at equilibrium. The first part of this thesis starts by generalising the "canonical equation of adaptive
dynamics", a first-order approximation of the speed of change of multidimensional traits under directional selection, so that it holds for general physiologically structured (i.e., arbitrarily complex) population models. Secondly, it proves that near evolutionary singularities and up to second-order terms, such models have the same invasion fitness as the much simpler Lotka-Volterra models (but third-order terms can differ). Thirdly, it combines those results in a recipe for studying analytically the complete
dynamics of evolutionary models with limited mutational effects. A prerequisite for models of sympatric speciation to work is the evolution of assortative
mating, which has never been validated against alternatives. Therefore the second part compares in a general setting the relative probabilities of the evolution of assortative mate choice to that of dominance interactions, and the conditions favouring each one. This part also shows that allowing for the possibility of sexual dimorphism makes sympatric speciation much less likely.
Advisors/Committee Members: Metz, J.A.J., Dooren, T.J.M. Van, Leiden University.
Subjects/Keywords: Adaptive dynamics; Assortative mating; Dominance evolution; Evolutionary modelling; Evolutionary singularities; Invasion fitness; Normal form; Physiologically structured population models; Sexual dimorphism; Sympatric speciation
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Durinx, M. (2008). Life amidst singularities. (Doctoral Dissertation). Leiden University. Retrieved from http://hdl.handle.net/1887/13144
Chicago Manual of Style (16th Edition):
Durinx, M. “Life amidst singularities.” 2008. Doctoral Dissertation, Leiden University. Accessed April 22, 2021.
http://hdl.handle.net/1887/13144.
MLA Handbook (7th Edition):
Durinx, M. “Life amidst singularities.” 2008. Web. 22 Apr 2021.
Vancouver:
Durinx M. Life amidst singularities. [Internet] [Doctoral dissertation]. Leiden University; 2008. [cited 2021 Apr 22].
Available from: http://hdl.handle.net/1887/13144.
Council of Science Editors:
Durinx M. Life amidst singularities. [Doctoral Dissertation]. Leiden University; 2008. Available from: http://hdl.handle.net/1887/13144
.