Phylogeography,colonization and population history of the Midas cichlid species complex (<Emphasis Type="Italic">Amphilophus</Emphasis> spp.) in the Nicaraguan crater lakes |
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Authors: | Marta Barluenga Axel Meyer |
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Institution: | 1.Lehrstuhl für Zoologie und Evolutionsbiologie, Department of Biology,University of Konstanz,Konstanz,Germany;2.Museo Nacional de Ciencias Naturales CSIC,Madrid,Spain |
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Abstract: | Background Elucidation of the mechanisms driving speciation requires detailed knowledge about the phylogenetic relationships and phylogeography
of the incipient species within their entire ranges as well as their colonization history. The Midas cichlid species complex
Amphilophus spp. has been proven to be a powerful model system for the study of ecological specialization, sexual selection and the mechanisms
of sympatric speciation. Here we present a comprehensive and integrative phylogeographic analysis of the complete Midas Cichlid
species complex in Nicaragua (> 2000 individuals) covering the entire distributional range, using two types of molecular markers
(the mitochondrial DNA control region and 15 microsatellites). We investigated the majority of known lake populations of this
species complex and reconstructed their colonization history in order to distinguish between alternative speciation scenarios. |
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