Two new species of Pseudopimelodus Bleeker, 1858 (Siluriformes: Pseudopimelodidae) from the Magdalena Basin, Colombia

Author:

Restrepo-Gómez Ana M.1,Rangel-Medrano José D.2,Márquez Edna J.2,Ortega-Lara Armando34

Affiliation:

1. Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Medellín, Antioquia, Colombia

2. Facultad de Ciencias, Laboratorio de Biología Molecular y Celular, Universidad Nacional de Colombia, Medellín, Antioquia, Colombia

3. Grupo de Investigación en Peces Neotropicales, Fundación para la Investigación y el Desarrollo Sostenible (FUNINDES), Cali, Colombia

4. Departamento de Biología, Facultad de Ciencias, Universidad del Valle, Cali, Colombia

Abstract

The family Pseudopimelodidae is widely distributed in South America and includes 51 described species organized in seven genera. Only two of four species of the genus Pseudopimelodus have been recorded for the trans-Andean basins of Colombia, Pseudopimelodus bufonius and P. schultzi, whose similarity in external morphology make their identification difficult. We performed a phylogenetic analysis using a fragment of the Cytochrome C Oxidase subunit 1 gene (COI), and analyzed osteological and traditional morphometric characters to study Pseudopimelodus from the Colombian trans-Andean region. Results provided strong support for two clades phylogenetically related to Pseudopimelodus, that showed clear-cut molecular, osteological, and morphometric differences from previously described bumblebee catfishes. Based on these results, we describe two Pseudopimelodus species from the Magdalena-Cauca River Basin: P. magnus sp. nov. with 43–44 vertebrae, dorsal-fin spine with serrations on its anterior margin; lateral margin of transverse process of the fourth vertebra of the Weberian complex forming an acute angle in ventral view and P. atricaudus sp. nov. with 39 vertebrae, dorsal-fin spine smooth on its anterior margin and a dark, vertical band covering 3/4 of the caudal fin with base of rays and tip of caudal-fin lobes hyaline.

Funder

Universidad Nacional de Colombia

Sede Medellín and Empresas Públicas de Medellín

Variación genotípica y fenotípica de poblaciones de especies reófilas presentes en el área de influencia del proyecto hidroeléctrico Ituango

Vicerrectoría de Investigaciones y Programa de Doctorado en Ciencias-Biología

Facultad de Ciencias, Universidad del Valle, Cali, Colombia

Publisher

PeerJ

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience

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5. Deep barcode divergence in Brazilian freshwater fishes: the case of the São Francisco River Basin;De Carvalho;Mitochondrial DNA,2011

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