Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Correlated evolution"”.
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Correlated evolution in experimental populations of yeast
… and fundamental questions about phenotypic evolution. As expected, growth rate in the selective environment rapidly increased for all lineages for the first ∼2000 generations and more slowly afterwards. All diploid lineages became haploid before ∼3000 generations of selection. Yield …
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The ecomorphology of facultative bipedality in Lepidosauria: implications for the evolution of reptilian bipedality
… including dinosaurs and humans. However, the evolution of a bipedal locomotor mode is poorly understood in reptiles. It has been repeatedly hypothesised that a facultative locomotor mode, where an animal moves both bipedally and quadrupedally under different conditions, forms an intermediate …
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Evolution of Floral Morphology and Symmetry in the Miconieae (Melastomataceae)
<p>Analyses of evolution of floral morphology and symmetry broaden our understanding of the drivers of angiosperm diversification. Integrated within a flower, labile floral characters produce different phenotypes that promote variable interactions with pollinators. Thus, investigation of floral …
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The function of passive debris cloaking in tiny beetles (Coleoptera: Zopheridae)
… I used phylogenetic methodologies. I ran a correlated evolution analysis between wing state and micro-habitat type on a zopherid phylogeny, and assessed the effects of flight loss on Zopheridae diversification in New Zealand. I found flight loss is partly driven by exposed habitat types, and …
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The evolution of annuality in association with a shift to more arid environments in the daisy genera Ifloga and Tricogyne
… in aridity should be associated with the evolution of an annual life history. I also investigated the correlated evolution of annuality and growth form. Ancestral character states for life history characters and climate variables were mapped onto a molecular phylogeny (obtained using …
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Endocranial volume and shape variation in early anthropoid evolution
<p>Fossil taxa are crucial to studies of brain evolution, as they allow us to identify evolutionary trends in relative brain size and brain shape that may not otherwise be identifiable in comparative studies using only extant taxa, owing to multiple events of parallel encephalization among primate …
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Unraveling Ecological Effects on Social Behavior. Insights from Tent-roosting Bats
… in social systems. Moreover, they have divergent evolutionary origins but similar roosting habits, suggesting convergence in roost use. These characteristics make this group an ideal system to test hypotheses regarding effects of ecological and environmental factors in evolution and stability of …
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Hiding in plain sight: accounting for rate heterogeneity in trait evolution models
… work on two main themes. First, most phenotypic evolution is not independent of other phenotypes. Changes in a particular character may influence changes in another and modeling these characters in isolation can mislead our inferences. Second, evolutionary change is heterogeneous. Not all species …
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The Evolution of Orthopteran Mating Systems and the Reproductive Ecology of New Zealand Cave Wētā
… has long been recognised as driving the evolution of diverse morphological and behavioural traits in animals. Decades of concerted research into the topic has uncovered reproductive adaptations ranging from the beautiful to the horrific, and insects provide some of the most striking …
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Evolutionary patterns in Thamnochortus (Restionaceae) : a study of specification in the Cape floristic region
Patterns of speciation and potential evolutionary pressures and constraints were investigated in the genus Thamnochortus. Phenetic methods were used to define boundaries of species prior to cladistic analyses. Comparative techniques were employed to investigate aspects of dispersal biology and fire …