Geographic variation and genetic structure in the Bahama Oriole (Icterus northropi), a critically endangered synanthropic species

dc.contributor.author Price, Melissa
dc.contributor.author Person, Carl
dc.contributor.author Hayes, William
dc.date.accessioned 2020-04-09T01:39:12Z
dc.date.available 2020-04-09T01:39:12Z
dc.date.issued 2015-11-26
dc.description.abstract Bird species may exhibit unexpected population structuring over small distances, with gene flow restricted by geographic features such as water or mountains. The Bahama Oriole (Icterus northropi) is a critically endangered, synanthropic island endemic with a declining population of fewer than 300 individuals. It now remains only on Andros Island (The Bahamas), which is riddled with waterways that past studies assumed did not hinder gene flow. We examined 1,858 base pairs of mitochondrial DNA sequenced from four gene regions in 14 birds (roughly 5% of the remaining population) found on the largest land masses of Andros Island (North Andros andMangrove Cay/South Andros).We sought to discern genetic structuring between the remaining subpopulations and its relationship to current conservation concerns. Four unique haplotypes were identified, with only one shared between the two subpopulations. Nucleotide and haplotype diversity were higher for the North Andros subpopulation than for the Mangrove Cay/South Andros subpopulation. Analysis of molecular variance (AMOVA) yielded aWright’s fixation index (Fst) of 0.60 (PFst = 0.016), with 40.2% of the molecular variation explained by withinpopulation differences and 59.8% by among-population differences. Based on the mitochondrial regions examined in this study, we suggest the extant subpopulations of Bahama Oriole exhibit significant population structuring over short distances, consistent with some other non-migratory tropical songbird species. en_US
dc.format.extent 15 en_US
dc.identifier.citation Price et al. (2015), Geographic variation and genetic structure in the Bahama Oriole (Icterus northropi), a critically endangered synanthropic species. PeerJ 3:e1421; DOI 10.7717/peerj.1421 en_US
dc.identifier.doi 10.7717/peerj.1421
dc.identifier.uri http://hdl.handle.net/10125/67644
dc.language.iso en-US en_US
dc.rights CC0 1.0 Universal *
dc.rights.uri http://creativecommons.org/publicdomain/zero/1.0/ *
dc.title Geographic variation and genetic structure in the Bahama Oriole (Icterus northropi), a critically endangered synanthropic species en_US
dc.type Article en_US
dc.type.dcmi Text en_US
prism.publicationname PeerJ en_US
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