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	Provedor de dados BABT (1) Genet. Mol. Biol. (1) Neotropical Ichthyology (1) Autor Araújo,Maria Lúcia Góes de (3) Charvet-Almeida,Patricia (2) Almeida,Maurício Pinto de (1) Alves-Gomes,José A. (1) Farias,Izeni P. (1) Farias,Izeni Pires (1) Frederico,Renata G. (1) Hrbek,Tomas (1) Teixeira,Simone Ferreira (1) Toffoli,Daniel (1) Mais... Palavra-chave COI (2) ATPase (1) Albinism (1) Amazon basin (1) Barcoding (1) Carcharhiniformes (1) MtDNA (1) Mustelus schimitti (1) Phylogenetics (1) Population genetics (1) Potamotrygon (1) Radiation (1) Triakidae (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2012 (1) 2008 (1) 2002 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última First record of albinism in the smooth dogfish Mustelus Schimitti Springer, 1939 (Carcharhiniformes - Triakidae) from Southern Brazil BABT Teixeira,Simone Ferreira; Araújo,Maria Lúcia Góes de. This paper reports on a subadult male specimen of the smooth dogfish, Mustelus schimitti, caught in the continental shelf of Rio Grande Sul, during winter of 1993, which exhibited the characteristics of total albinism. Tipo: Info:eu-repo/semantics/article Palavras-chave: Albinism; Mustelus schimitti; Carcharhiniformes; Triakidae. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200017 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 Phylogeography and conservation genetics of the Amazonian freshwater stingray Paratrygon aiereba Müller & Henle, 1841 (Chondrichthyes: Potamotrygonidae) Neotropical Ichthyology Frederico,Renata G.; Farias,Izeni P.; Araújo,Maria Lúcia Góes de; Charvet-Almeida,Patricia; Alves-Gomes,José A.. The family Potamotrygonidae is monophyletic comprising three genera: Paratrygon Duméril, Potamotrygon Garman and Plesiotrygon Rosa, Castello & Thorson. The distribution of most species in this family is restricted to a single basin or fluvial system. Only Potamotrygon motoro, Potamotrygon orbignyi and Paratrygon aiereba are found in more than one river basin. In this study we investigate genetic structuring of Paratrygon aiereba, from five rivers of the Amazon region: Negro, Solimões-Amazon-Estuary system, Tapajós, Xingu and Araguaia. Sixty-three individuals were sequenced for ATPase 6, and a representative subsample of 27 individuals was sequenced for COI. The COI dataset analysis indicated that Paratrygon is sister to all other potamotrygonid... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon basin; ATPase; COI; Population genetics. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000100007 Registros recuperados: 3 Primeira ... 1 ... Última

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