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COALESCENT ANALYSES OF MULTIPLE LOCI SUPPORT A NEW ROUTE TO SPECIATION IN BIRDS
Author(s) -
Kondo Beatrice,
Peters Jeffrey L.,
Rosensteel Bryan B.,
Omland Kevin E.
Publication year - 2008
Publication title -
evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.84
H-Index - 199
eISSN - 1558-5646
pISSN - 0014-3820
DOI - 10.1111/j.1558-5646.2008.00345.x
Subject(s) - coalescent theory , biology , disjunct , range (aeronautics) , genetic algorithm , ecology , evolutionary biology , phylogeography , temperate climate , passerine , zoology , phylogenetics , population , gene , genetics , demography , materials science , sociology , composite material
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.