Rangewide and local barriers to gene flow in white-crowned sparrows (Zonotrichia leucophrys)

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dc.contributor.authorWelke, Catherine A.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorBurg, Theresa M.
dc.date.accessioned2019-07-08T18:45:50Z
dc.date.available2019-07-08T18:45:50Z
dc.date.issued2019
dc.degree.levelMastersen_US
dc.description.abstractAlthough white-crowned sparrows (Z. leucophrys) have been extensively researched for physiology and behaviour, surprisingly little recent work has been done to characterize the population genetic structure of this widespread North American passerine. This study used molecular markers and habitat modelling to test theories of Pleistocene refugia that could explain current subspecies delineations, then investigated rangewide and local barriers causing contemporary genetic differentiation across the geographical range of three subspecies: Z. l. gambelii, Z. l. oriantha, and Z. l. pugetensis. Phylogenetic analysis showed weak and inconclusive support for the genetic differentiation of subspecies and the theories of their Pleistocene origin. Mitochondrial, nuclear Z-linked, and microsatellite markers show a north-south genetic split caused by isolation by distance, and an east-west split caused by mountains as a barrier to gene flow between Alberta and British Columbia populations. Analysis revealed the importance of habitat ecotype and anthropogenic disturbance on contemporary population genetic structure.en_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/5449
dc.language.isoen_USen_US
dc.proquest.subject0369en_US
dc.proquest.subject0329en_US
dc.proquest.subject0472en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectgene flowen_US
dc.subjectgenetic differentiationen_US
dc.subjecthabitat modellingen_US
dc.subjectmolecular markersen_US
dc.subjectPleistocene refugia theoriesen_US
dc.subjectwhite-crowned sparrowen_US
dc.subjectDissertations, Academicen_US
dc.titleRangewide and local barriers to gene flow in white-crowned sparrows (Zonotrichia leucophrys)en_US
dc.typeThesisen_US
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