A new species of Tetragonopterus Cuvier, 1816 (Characiformes: Characidae: Tetragonopterinae) from the rio Jari, Amapá, northern Brazil

Neotropical Ichthyology

Claudio Oliveira¹  Ricardo C Benine¹  Tatiane C Mariguela¹  Bruno F Melo¹ 

[1] Universidade Estadual Paulista;

关键词: COI gene;    Genetic distance;    Mitochondrial DNA;    Neotropical fish;    Taxonomy;   

DOI  :  10.1590/S1679-62252011000100002

来源: DOAJ

【 摘 要 】

A new species of Tetragonopterus is described from the rio Jari, a tributary to the left margin of rio Amazonas, at the border between Amapá and Pará States, northern Brazil. It is morphologically diagnosed from the other species of the genus (T. argenteus, T. chalceus, and T. rarus new combination) by the lozenge-shaped spot on the caudal peduncle vs. rounded to square spot on the other species. Partial sequences of the mitochondrial gene Cytochrome Oxidase C subunit I, from representatives of all valid species of Tetragonopterus, including this new species, were analyzed. The obtained results revealed a significant genetic distance between the new species and its congeners. A discussion on the new combination, Tetragonopterus rarus, is also provided.

【 授权许可】

Unknown