Divergence in ecological and sexual traits shapes the evolution of swordtail fish and their naturally occurring hybrids
Abstract/Contents
- Abstract
- In this thesis, I explore the consequences of hybridization, or genetic exchange between species, with a focus on divergent traits that have evolved between species. I performed these studies leveraging a system where natural hybridization is ongoing between species that vary in their sexual displays and ecology: the swordtail fishes \emph{Xiphophorus malinche} and \emph{X. birchmanni}. In my first chapter, I provide an introduction to the genomic consequences of hybridization, highlighting open questions around predicting the effects of different and interacting selective forces on hybrid genomes. In my second chapter, I explore the genetic basis of a sexually-selected ornament, called the sword. In my third and fourth chapters, I focused on divergence between species in thermal tolerance and offspring size. These two traits can be viewed as models of evolved differences between these species in response to the environment and allow me to explore the interplay between ecological adaptations in species and their breakdown in hybrids.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2023; ©2023 |
| Publication date | 2023; 2023 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Payne, Cheyenne Yancey |
|---|---|
| Degree supervisor | Schumer, Molly |
| Thesis advisor | Schumer, Molly |
| Thesis advisor | Exposito-Alonso, Moises |
| Thesis advisor | Fraser, Hunter |
| Thesis advisor | Gifford, Casey |
| Degree committee member | Exposito-Alonso, Moises |
| Degree committee member | Fraser, Hunter |
| Degree committee member | Gifford, Casey |
| Associated with | Stanford University, School of Humanities and Sciences |
| Associated with | Stanford University, Department of Biology |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Cheyenne Payne. |
|---|---|
| Note | Submitted to the Department of Biology. |
| Thesis | Thesis Ph.D. Stanford University 2023. |
| Location | https://purl.stanford.edu/ct595tt6597 |
Access conditions
- Copyright
- © 2023 by Cheyenne Yancey Payne
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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