The phylogeography, post-glacial expansion and systematics of the purple finch (Carpodacus purpureus)

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dc.contributor.authorMacfarlane, Colin Bran Alexander
dc.contributor.supervisorBurg, Theresa M.
dc.date.accessioned2015-01-20T02:43:59Z
dc.date.available2015-01-20T02:43:59Z
dc.date.issued2014
dc.degree.levelMastersen_US
dc.degree.levelMasters
dc.description.abstractUsing a combination of mitochondrial and z-linked sequence data, microsatellites and spatio-geographical modelling, I examine the historical and contemporary factors influencing the genetic structure of the purple finch (Carpodacus purpureus). The last glacial maximum likely forced the purple finch into multiple refugia: on the Pacific Coast, in south-western United States, and off the Atlantic shelf. The two subspecies remain distinct lineages, with little evidence of gene flow between C. p. purpureus and C. p. californicus. The contact zone between subspecies appears in south-western British Columbia. As C. p. purpureus expanded from their refugia following a stepping-stone model, eastern and western populations came into secondary contact, resulting in extensive admixture. Contemporary levels of gene flow between populations are low with at least five genetic clusters, likely due to high site fidelity and morphological variation upon which mate selection occurs. Physical barriers do not appear to affect dispersal of the purple finch.en_US
dc.identifier.urihttps://hdl.handle.net/10133/3620
dc.language.isoen_CAen_US
dc.proquest.subject0369en_US
dc.proquest.subject0602en_US
dc.proquest.subject0412en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. 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.subjectPurple finchen_US
dc.subjectPhylogeographyen_US
dc.subjectMicrosatelliteen_US
dc.subjectMitochondrialen_US
dc.titleThe phylogeography, post-glacial expansion and systematics of the purple finch (Carpodacus purpureus)en_US
dc.typeThesisen_US
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