Global ETD Search
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Showing 1 to 4 of 4 for “"Prezygotic reproductive isolation"”.
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The evolution of prezygotic reproductive isolation in the Drosophila pseudoobscura subgroup
… dissertation is to evaluate some mechanisms of prezygotic reproductive isolation in the D. pseudoobscura subgroup. I begin by evaluating how the evolution of female preferences and male sexual characters lead to reinforcement between Drosophila pseudoobscura and its congener D. persimils. In …
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How Are Rare Species Maintained?: Reproductive Barriers Between Layia jonesii, a Rare Serpentine Endemic, and L. platyglossa
<p>Reproductive barriers are vital to generating new species as well as maintaining distinct species. Investigating reproductive barriers between closely related plant taxa helps us to understand how these barriers are maintained, particularly between rare and widespread relatives. <em>Layia …
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Adaptation and hybridization in Helicoverpa crop pests
… million years ago and show strong but incomplete prezygotic reproductive isolation. As a consequence of hybridization, an allele conferring insecticide resistance was introduced into the native Brazilian H. zea population through adaptive introgression. I use this as a system with which to …
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Female Preference and Prezygotic Isolation In the Fundulus Notatus Species Complex
<p>Understanding how reproductive isolation arises between closely related species is central to evolutionary research. Hybridization is widespread across taxa and shaped by interactions among environmental factors, evolutionary history, genetic compatibility, and behavior. These forces often …