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Jackson, T. G., Morris, A. B., & Nelson, D. I. (2009). Phylogenetic distinctiveness of the endangered alabama red-bellied cooter. Journal of the Alabama Academy of Science, April.
Added by: Admin (01 Aug 2010 18:21:57 UTC) |
| Resource type: Journal Article BibTeX citation key: Jackson2009a View all bibliographic details  |
Categories: General Keywords: Emydidae, Genetik = genetics, Pseudemys, Pseudemys alabamensis, Pseudemys gorzugi, Pseudemys texana, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Jackson, Morris, Nelson Collection: Journal of the Alabama Academy of Science |
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| URLs http://findarticle ... 2_80/ai_n35679547/ |
| Abstract |
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The Alabama Red-bellied Cooter (Pseudemys alabamensis) was designated a federally endangered species in 1987. Given the restricted geographic distribution, conservation concerns, and unique life history of this turtle, it is extremely important to protect existing populations and their habitats. The morphological differences between P. alabamensis and species of turtles in the genus Pseudemys have been well documented. However, to date, few genetic analyses have been conducted on P. alabamensis. We used mitochondrial DNA (mtDNA) sequence data to determine the phylogenetic distinctiveness of P. alabamensis within the context of the other members of the genus. A total of 91 specimens, including outgroups, were used in analyses revealing 36 different mtDNA haplotypes. Of the 39 samples of P. alabamensis examined, only 4 unique haplotypes were discovered. The genus Pseudemys forms a well supported monophyletic clade. However, only P. gorzugi (Rio Grande Cooler) was genetically distinct from all other members of the genus. Pseudemys texana (Texas River Cooler) was found to be distinct but nested within a clade containing all other Pseudemys. Due to limited genetic variation observed between P. alabamensis and the remaining 5 species in the genus, support for the monophyly of currently recognized taxa was lacking. These genetic findings only increase the need for further study to resolve the taxonomic relationships among members of the genus Pseudemys.
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