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A test of the utility of DNA barcoding in the radiation of the freshwater stingray genus Potamotrygon (Potamotrygonidae, Myliobatiformes) Genet. Mol. Biol.
Toffoli,Daniel; Hrbek,Tomas; Araújo,Maria Lúcia Góes de; Almeida,Maurício Pinto de; Charvet-Almeida,Patricia; Farias,Izeni Pires.
DNA barcoding is a recently proposed global standard in taxonomy based on DNA sequences. The two main goals of DNA barcoding methodology are assignment of specimens to a species and discovery of new species. There are two main underlying assumptions: i) reciprocal monophyly of species, and ii) intraspecific divergence is always less than interspecific divergence. Here we present a phylogenetic analysis of the family Potamotrygonidae based on mitochondrial cytochrome c oxidase I gene, sampling 10 out of the 18 to 20 valid species including two non-described species. Potamotrygonidae systematics is still not fully resolved with several still-to-be-described species while some other species are difficult to delimit due to overlap in morphological characters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Potamotrygon; Barcoding; Radiation; Phylogenetics; COI; MtDNA.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200028
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