Geographic Variation and Genetic Structure in the Streak-Backed Oriole: Low Mitochondrial DNA Differentiation Reveals Recent Divergence

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dc.contributor.authorCortes-Rodríguez, Nandadevi
dc.contributor.authorHernández-Baños, Blanca E.
dc.contributor.authorNavarro-Sigüenza, Adolfo G.
dc.contributor.authorOmland, Kevin E.
dc.date.accessioned2018-11-09T17:43:57Z
dc.date.available2018-11-09T17:43:57Z
dc.date.issued2008-09-24
dc.description.abstractMany avian species from the temperate zone show low levels of genetic diversity when compared with species from the tropics, although there are some interesting exceptions, and species whose ranges occur across the temperate–tropical boundary could have characteristics of either or both zones. The distribution of the Streak-backed Oriole (Icterus pustulatus) extends from northwestern Sonora in Mexico south along the Pacific coast to Costa Rica. In addition, there is a population on the Tres Marías Islands. Northern populations are migratory and dichromatic (sexes different), whereas southern populations are nonmigratory and monochromatic (sexes alike). We sequenced mtDNA (control region domain I) from 102 individuals across the range of this species. Maximum parsimony and maximum likelihood analyses did not support the existence of multiple species within Icterus pustulatus based on mtDNA. However, populations from the Tres Marías Islands seem to have been isolated long enough to have fixed differences from populations on the mainland. The species complex shows an uncommon phylogeographic pattern, with shallow haplotype trees and weak geographic structure, suggesting that it has undergone recent population expansion. We recommend that the insular populations be considered a separate species, Icterus graysonii, given the fixed differences from mainland birds in multiple characteristics, including mtDNA and plumage patterns.en_US
dc.description.urihttp://www.americanornithologypubs.org/doi/pdf/10.1525/cond.2008.8578en_US
dc.format.extent11 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/M29882R5B
dc.identifier.citationNandadevi Cortes-Rodríguez , Blanca E. Hernández-Baños, Adolfo G. Navarro-Sigüenza, and Kevin E. Omland, Geographic Variation and Genetic Structure in the Streak-Backed Oriole: Low Mitochondrial DNA Differentiation Reveals Recent Divergence, The Condor 110(4):729-739. 2008 , https://doi.org/10.1525/cond.2008.8578en_US
dc.identifier.urihttps://doi.org/10.1525/cond.2008.8578
dc.identifier.urihttp://hdl.handle.net/11603/11940
dc.language.isoen_USen_US
dc.publisherAmerican Ornithological Societyen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Biological Sciences Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution-NonCommercial-NoDerivs 2.0 Generic (CC BY-NC-ND 2.0)*
dc.rights© The American Ornithologists’ Union, 2008
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/*
dc.subjectIcterus pustulatusen_US
dc.subjectmitochondrial DNAen_US
dc.subjectphylogeographyen_US
dc.subjectpopulation geneticsen_US
dc.subjectspeciationen_US
dc.titleGeographic Variation and Genetic Structure in the Streak-Backed Oriole: Low Mitochondrial DNA Differentiation Reveals Recent Divergenceen_US
dc.typeTexten_US

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