Literaturdatenbank
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Weisrock, D. W. (2000). Comparative molecular phylogeography of north american softshell turtles (apalone): implications for regional and wide-scale historical evolutionary forces. Molecular Phylogenetics and Evolution, 14, 152–164.
Added by: Admin (17 Aug 2008 18:17:29 UTC) |
| Resource type: Journal Article BibTeX citation key: Weisrock2000 View all bibliographic details  |
Categories: General Keywords: Apalone, Apalone ferox, Apalone mutica, Apalone spinifera, Genetik = genetics, Schildkröten = turtles + tortoises, Systematik = taxonomy, Trionychidae, Trionyx Creators: , Weisrock Collection: Molecular Phylogenetics and Evolution |
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| Abstract |
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Trionyx We use a comparative analysis of partial cytochrome b sequences to evaluate the evolutionary forces shaping wide-scale phylogeographic patterns of all three North American softshell turtles (Apalone ferox, A. mutica, and A. spinifera). The overall phylogeographic patterns are concordant with results from both extensive regional studies of southeastern species, implicating historical vicariant processes during the Pliocene and Pleistocene, and investigations of more northerly distributed species, indicating a bottleneck effect of recent dispersal into postglacial habitat. We also resolved a novel, shared genetic break between northern-western and southeastern populations within both A. mutica and A. spinifera, demonstrating the value of using widespread taxa to evaluate both regional and wider scale phylogeographic patterns. The extensive phylogenetic structure and sequence divergences within both A. mutica and A. spinifera contrast sharply with most previous studies of turtles and with the hypothesis that turtles in general have slow rates of mtDNA evolution
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