Taxonomic review and phylogenetic relationships of the genus Leporacanthicus Isbrücker &Nijssen, 1989 (Siluriformes, Loricariidae) / Revisão taxonômica e relações filogenéticas do gênero Leporacanthicus Isbrücker &Nijssen, 1989 (Siluriformes, Loricariidae)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

A taxonomic review of the genus Leporacanthicus Isbrücker &Nijssen, 1989 is presented, as well as a phylogenetic hypothesis of species relationships, and it position within the tribe Ancistrini. Four species distributed in the Brazilian and Guiana Shields, Amazon and Orinoco Basins, are recognized as valid: L.galaxias (rios Tocantins, Guam and Orinoco); L. joselimai (rios Tapajós and Curuá-Una), L. heterodon (rio Xingu); e L. triactis (rio Orinoco). The phylogenetic analysis resulted in two cladogramas equally parsimonious with 336 steps (CI=0,43; RI=0,66), from which a strict consensus tree was generated. The monophyletism of Leporacanthicus is corroborated by 14 synapomorphies; within the genus the following topology was obtained: (L. galaxias (L. triactis (L. heterodon, L. joselimai))). The results presented herein suggest that Pseudacanthicus is considered to be the sister-group of Leporacanthicus, differing from previous hypothesis obtained using molecular and/or morphological dada.

ASSUNTO(S)

peixes fisches orinoco basin ancistrini sistemática amazon basin ancistrini sistematic bacia do orinoco bacia amazônica

ACESSO AO ARTIGO

Documentos Relacionados