Coalescent analyses show isolation without migration in two closely related tropical orioles: the case of Icterus graduacauda and Icterus chrysater

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dc.contributor.authorCortés‐Rodríguez, Nandadevi
dc.contributor.authorJacobsen, Frode
dc.contributor.authorHernandez‐Baños, Blanca E.
dc.contributor.authorNavarro‐Siguenza, Adolfo G.
dc.contributor.authorPeters, Jeffrey L.
dc.contributor.authorOmland, Kevin E.
dc.date.accessioned2018-11-09T17:35:42Z
dc.date.available2018-11-09T17:35:42Z
dc.date.issued2013-10-09
dc.description.abstractThe Isthmus of Tehuantepec has played an important role in shaping the avian diversity of Mexico, as well as the rest of the Western Hemisphere. It has been both a barrier and a land connector between North and South America for many groups of birds. Furthermore, climatic change over the Pleistocene has resulted in ecological fluctuations that led to periods of connection and isolation of the highlands in this area. Here we studied the divergence of two species of orioles whose distribution in the highlands is separated by the lowlands of the Isthmus of Tehuantepec: Icterus graduacauda (west of the Isthmus) and Icterus chrysater (east of the Isthmus). We sequenced multiple loci (one mitochondrial gene and six nuclear introns) and performed coalescent analyses (Isolation with Migration) to test whether their divergence resulted from prior occupancy of the ancestral area followed by a vicariant event or recent dispersal from one side or the other of this Isthmus. Results strongly indicate a vicariant event roughly 300,000 years ago in the Pleistocene followed by little or no gene flow. Both mitochondrial and nuclear genes show that the Isthmus of Tehuantepec is a strong barrier to gene flow. Thus, these two species appear to not exchange genes despite their recent divergence and the close geographic proximity of their ranges.en_US
dc.description.sponsorshipUS National Science Foundation grant to K.E. Omland (DEB-1119506), PAPIIT-DGAPA (IN225611) and Consejo Nacional de Cienciay Tecnologıa (CONACyT).en_US
dc.description.urihttps://onlinelibrary.wiley.com/doi/10.1002/ece3.768en_US
dc.format.extent11 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/M2B56D83R
dc.identifier.citationNandadevi Cortés‐Rodríguez, Frode Jacobsen , Blanca E. Hernandez‐Baños , Adolfo G. Navarro‐Siguenza , Jeffrey L. Peters , Kevin E. Omland , Coalescent analyses show isolation without migration in two closely related tropical orioles: the case of Icterus graduacauda and Icterus chrysater, Ecology and Evolution, Volume 3, Issue 13, https://doi.org/10.1002/ece3.768en_US
dc.identifier.urihttps://doi.org/10.1002/ece3.768
dc.identifier.urihttp://hdl.handle.net/11603/11932
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sons Ltden_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 3.0 Unported (CC BY 3.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/*
dc.subjectcoalescenten_US
dc.subjectIcterusen_US
dc.subjectIsolation with Migrationen_US
dc.subjectIsthmus of Tehuantepecen_US
dc.subjectmultilocusen_US
dc.titleCoalescent analyses show isolation without migration in two closely related tropical orioles: the case of Icterus graduacauda and Icterus chrysateren_US
dc.typeTexten_US

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