Pleistocene glacial cycles and physical barriers influence phylogeographic structure in Black-capped chickadees (Poecile atricapillus), a widespread North American passerine

dc.contributor.authorHindley, J.
dc.contributor.authorGraham, Brendan A.
dc.contributor.authorBurg, Theresa M.
dc.date.accessioned2022-10-24T21:53:02Z
dc.date.available2022-10-24T21:53:02Z
dc.date.issued2018
dc.descriptionAccepted author manuscripten_US
dc.description.abstractThe nonmigratory Black-capped Chickadee (Poecile atricapillus (Linnaeus, 1766)) has a continent-wide distribution extending across large parts of North America. To investigate the phylogeographic structure and verify possible refugia during the last glacial maximum, we sequenced a 678 bp region of the mitochondrial control region from 633 Black-capped Chickadees at 35 sites across North America and performed paleoecological distribution modeling. Two genetically distinct groups were found using multiple analyses: one in Newfoundland (Canada) and a widespread continental group, with additional substructure evident in western continental populations. While gene flow is low throughout the range, it is especially low in peripheral populations. The Newfoundland population has remained isolated from continental populations for at least 65 000 years and contains a number of fixed nucleotide differences. Within the continental populations, Black-capped Chickadees are subdivided into Pacific Coast, Alaska (USA), southeast Rockies, and main-northeast groups consistent with late Pleistocene vicariance events. Evidence of secondary contact was identified between Pacific and main-northeast populations in northwest British Columbia (Canada) and between southeast Rockies and main-northeast groups in Montana (USA). Paleoecological distribution modeling predicted suitable habitat in Alaska, off the coast of Newfoundland, and several locations across the southern United States during the last glacial maximum, whereas suitable habitat during the last interglacial was more similar to the contemporary distribution.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationHindley, J., Graham, B. A., & Burg, T. M. (2018). Pleistocene glacial cycles and physical barriers influence phylogeographic structure in Black-capped chickadees (Poecile atricapillus), a widespread North American passerine. Canadian Journal of Zoology, 96(12), 1366-1377. https://doi.org/10.1139/cjz-2018-0013en_US
dc.identifier.urihttps://hdl.handle.net/10133/6357
dc.language.isoen_CAen_US
dc.publisherCanadian Science Publishingen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.urlhttps://doi.org/10.1139/cjz-2018-0013en_US
dc.subjectDispersal barriersen_US
dc.subjectmtDNAen_US
dc.subjectPoecile atricapillusen_US
dc.subjectPostglacial colonizationen_US
dc.subjectRefugiaen_US
dc.subject.lcshBlack-capped chickadee
dc.subject.lcshBirds--Dispersal
dc.subject.lcshMitochondrial DNA
dc.subject.lcshPhylogeography
dc.titlePleistocene glacial cycles and physical barriers influence phylogeographic structure in Black-capped chickadees (Poecile atricapillus), a widespread North American passerineen_US
dc.typeArticleen_US
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