Autor(es)

da Silva, Joao Paulo C. B. ^[1] ; de Carvalho, Marcelo R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Zool, Inst Biociencias, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 9, n. 1, p. 209-232, JAN-MAR 2011.
• Citações Web of Science: 10

Resumo

A taxonomic revision of two nominal species of freshwater stingrays of the genus Potamotrygon previously considered valid, Potamotrygon falkneri Castex & Maciel, 1963 and Potamotrygon castexi Castello & Yagolkowski, 1969, was conducted based on a detailed analysis of external and internal morphology, including a morphometric and meristic study of specimens from the recorded range of both species. The taxonomic status of the nominal species P. menchacai Achenbach, 1967, treated by previous authors as a junior synonym of P. falkneri, was also evaluated. These nominal species, which constitute what has been called the falkneri-castexi complex, were found to represent examples of chromatic variation present in a single species, given that intermediate patterns of coloration are common and the remaining characters analyzed are not consistent enough for separation at the specific level. Consequently, Potamotrygon falkneri is considered valid, whereas the nominal species Potamotrygon castexi and Potamotrygon menchacai are concluded to be junior synonyms of P. falkneri. Additionally, a putative new species is identified from the río Madre de Díos in Peru, which has some characters that do not correspond to P. falkneri. This species, known from few individuals, is here provisionally treated as Potamotrygon sp. (AU)

• Processo FAPESP: 03/01816-2 - Helmintos parasitas de potamotrygonidae:diversidade, biogeografia e co-evolucao.
• Beneficiário: Fernando Portella de Luna Marques
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 05/01299-3 - Filogenia e biogeografia dos monogenoidea ("platyhelminthes": cercomeromorpha) parasitos de potamotrygonidae (condrichthyes: rajiformes: myliobatoidei).
• Beneficiário: Fernando Portella de Luna Marques
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 02/06459-0 - Sistematica filogenetica, evolucao e classificacao de raias viventes e fosseis, com uma analise da biologia historica das raias de agua doce da familia potamotrygonidae ( chrondricthyes: batoidea).
• Beneficiário: Marcelo Rodrigues de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 08/09436-8 - Posicionamento filogenético e padrões de diversificação em linhagens de Rhinebothroides (Eucestoda: Tetraphillidea: Phyllobothriidae)
• Beneficiário: Fernando Portella de Luna Marques
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 05/52985-4 - Delimitacao da especie potamotrygon falkneri castex & maciel, 1963, a partir da analise taxonomica do complexo talkneri-castexi (chondrichthyes: myliobatiformes: potamotrygonidae).
• Beneficiário: João Paulo Capretz Batista da Silva
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 10/51193-5 - Estudos sistematicos, morfologicos e filogeneticos da familia rajidae (chondrichthyes: rajiformes: rajidae).
• Beneficiário: Marcelo Rodrigues de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular