Literaturdatenbank
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Barth, D., Bernhard, D., Fritzsch, G., & Fritz, U. (2004). The freshwater turtle genus mauremys (testudines, geoemydidae) a textbook example of an east-west disjunction or a taxonomic misconcept? Zoologica Scripta, 33(3), 213–221.
Added by: Admin (14 Aug 2008 20:37:12 UTC) Last edited by: Beate Pfau (23 Dec 2008 11:27:52 UTC) |
| Resource type: Journal Article BibTeX citation key: Barth2004a View all bibliographic details  |
Categories: General Keywords: Cuora, Emydidae, Genetik = genetics, Geoemydidae, Mauremys, Mauremys annamensis, Mauremys caspica, Mauremys japonica, Mauremys leprosa, Mauremys mutica, Mauremys rivulata, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Barth, Bernhard, Fritz, Fritzsch Collection: Zoologica Scripta |
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| Abstract |
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We compare 1036 bp of the mitochondrial cytochrome b gene (cyt b) from all six Mauremys species with 16 other taxa, representing both currently recognized subfamilies of the Geoemydidae (Geoemydinae and Batagurinae) to contribute a comprehensive dataset towards resolving the conflicting Mauremys taxonomy and phylogeography. Mauremys, a representative of the Geoemydinae, is thought to be an example of a taxon with an east-west disjunction due to Pleistocene glacial extinction, with species occurring in the western Palearctic and species in the eastern Palearctic and Oriental regions. Our results contradict this traditional zoogeographical scheme and the current taxonomy of the Geoemydidae. Mauremys is paraphyletic with respect to two East Asian genera belonging to the Batagurinae: Chinemys and Ocadia. Therefore, Mauremys, as currently understood, clearly represents a taxonomic misconcept. Mauremys+Chinemys+Ocadia contains four well supported clades, two of which M. japonica+Chinemys+Ocadia and M. annamensis+M. mutica are confined to eastern Asia. The other two M. caspica+M. rivulata and M. leprosa occur in the western Palearctic. Mauremys leprosa may represent an ancient lineage which differentiated before the split between the other western and eastern species occurred. The patchy distribution of the four clades is likely the result of several ancient radiations rather than of a Pleistocene extinction. The sister-group of Mauremys+Chinemys+Ocadia is Cuora, a morphologically highly specialized genus with a complicated shell hinging mechanism.
Added by: Admin Last edited by: Beate Pfau |
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WIF
Added by: Beate Pfau |