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1 May 2008 Coalescent Analyses of Multiple Loci Support a New Route to Speciation in Birds
Beatrice Kondo, Jeffrey L. Peters, Bryan B. Rosensteel, Kevin E. Omland
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Abstract

A widely accepted paradigm is that sedentary Neotropical bird species are a reservoir that gives rise to temperate-tropical migratory species. Recently, an alternative theory has been proposed, that developmental plasticity can allow some individuals within a migratory species to establish a disjunct breeding range through loss of migration, thus facilitating the founding of a new sedentary species. We used mtDNA and two nuclear introns to perform coalescent analyses for two closely related New World oriole species, one a long-distance temperate-tropical migrant and the other a short-distance intratropical migrant. Our results suggest that the short-distance migrant recently diverged from the long-distance migrant via a founder event. In this species pair, the widely accepted paradigm is not supported. These results are consistent with a model of speciation through reduction of migratory distance.

Beatrice Kondo, Jeffrey L. Peters, Bryan B. Rosensteel, and Kevin E. Omland "Coalescent Analyses of Multiple Loci Support a New Route to Speciation in Birds," Evolution 62(5), 1182-1191, (1 May 2008). https://doi.org/10.1111/j.1558-5646.2008.00345.x
Received: 20 August 2007; Accepted: 14 January 2008; Published: 1 May 2008
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KEYWORDS
Coalescent methods
evolution of migration
founder event speciation
Icterus abeillei
Icterus galbula
isolation with migration
recent speciation
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