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Hybridization and species cohesion i...

Mandeville, Elizabeth G.

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Hybridization and species cohesion in Catostomus fishes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Hybridization and species cohesion in Catostomus fishes./
作者:	Mandeville, Elizabeth G.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	159 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-03(E), Section: B.
Contained By:	Dissertation Abstracts International78-03B(E).
標題:	Genetics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10154335
ISBN:	9781369094435

Hybridization and species cohesion in Catostomus fishes.
Mandeville, Elizabeth G.

Hybridization and species cohesion in Catostomus fishes. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 159 p.

Source: Dissertation Abstracts International, Volume: 78-03(E), Section: B.

Thesis (Ph.D.)--University of Wyoming, 2016.

Evolution occurs in heterogeneous environments, over large geographic ranges, and in the presence of variable species assemblages. My dissertation research focuses on how genetic variation is organized both at the species level and in populations of each species, and how ecological processes can affect evolutionary processes governing genetic variation. I addressed these topics using genomic and isotopic studies of six Catostomus fish species in the Upper Colorado River basin and adjacent river basins. A major finding of my work is that biological processes often produce variable outcomes. In Chapter 1 and Chapter 2, I describe how a seemingly consistent process - secondary contact and interbreeding between related species - actually results in extremely variable outcomes, both across locations and in different hybrid crosses. In Chapter 3, I show that magnitude and spatial arrangement of genetic variation vary across co-occurring closely related species, suggesting that species cohesion is variable. In Chapter 4, I show that relative resource use by hybrids and parental species varies across rivers, suggesting different relationships between species and hybrids across locations. These insights are enabled by working on a large geographic scale and sampling across many populations and multiple species. Working on a realistic spatial scale for each of these studies allowed me to identify the distribution of possible outcomes for each process, rather than assuming generality from a small number of instances of a process.

ISBN: 9781369094435Subjects--Topical Terms:

530508
Genetics.

Hybridization and species cohesion in Catostomus fishes.
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