alexa Are rapids a barrier for floodplain fishes of the Amazon basin? A demographic study of the keystone floodplain species Colossomamacropomum (Teleostei: Characiformes).
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Phylogenetics & Evolutionary Biology

Author(s): Farias IP, Torrico JP, GarcaDvila C, Santos Mda C, Hrbek T, , Farias IP, Torrico JP, GarcaDvila C, Santos Mda C, Hrbek T,

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Abstract We investigated demographic history and population structuring of Colossoma macropomum sampled from 14 localities in the Amazon basin and the Bolivian sub-basin; the two basins are separated by a series of 16 rapids. Although genetically differentiated, IMa analyses suggest non-zero bi-directional migration rates, and inter-basin divergence of approximately 17 thousand years ago. Analyses in BEAST indicated that Bolivian C. macropomum has been demographically stable except for a moderate population increase in the last 12 thousand years, while Amazonian C. macropomum has been experiencing demographic growth over the last 350 thousand years, resulting in approximately one order of magnitude increase in coalescent N(e). Copyright 2010 Elsevier Inc. All rights reserved. This article was published in Mol Phylogenet Evol and referenced in Journal of Phylogenetics & Evolutionary Biology

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