Global ETD Search
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Showing 1 to 6 of 6 for “"Parapatric"”.
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Diversification of Antbirds Associated with Amazonian Flooded Forest Habitats
… flooded forest birds raises the possibility that parapatric rather than allopatric speciation, might drive divergence in this habitat. Parapatric speciation usually involves gradual divergence across a species range, frequently involving divergence across geographically structured ecological …
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Comparative Population Genomics and Speciation of Snakes Across the North American Deserts
… occurred with continuous gene flow, suggesting parapatric speciation is common across this assemblage of snake species. Therefore, in contrast to the classic allopatric model of speciation, which has been the paradigm mode in vertebrates, I demonstrate that speciation with gene flow may be …
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Local adaptation to parasites and selection on major histocompatibility genes in ecologically divergent populations of three-spine stickleback (Gasterosteus aculeatus)
… MHC alleles among populations. When comparing parapatric populations experiencing gene flow, MHC alleles maintained at relatively high frequency in one population were more likely to be associated with reduced, rather than increased, parasite abundances in that population. Allopatric …
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Determining the Influence of Abiotic and Biotic Predictors on Ecological Niche Models
… rates for biological entities with presumed parapatric distributions (i.e., vegetation types). In the second chapter, I develop a novel null model test to enable comparisons of model performance between two or more ENMs built with different predictor variable sets by extending a null model …
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Determining Habitat Associations of Virginia and Carolina Northern Flying Squirrels in the Appalachian Mountains from Bioacoustic and Telemetry Surveys
… between northern flying squirrels and the parapatric southern flying squirrel (G. volans) also is possible with ultrasonic acoustics, but not with camera trapping. This ultimately makes ultrasonic acoustics the most effective and efficient method to obtain detection/non-detection data. To …