Fish fauna of small streams of the Catua-Ipixuna Extractive Reserve, state of Amazonas, Brazil

By

Oliveira, Renildo Ribeiro de
Rocha, Marcelo Salles
Anjos, Maeda Batista dos
Zuanon, Jansen
Py-Daniel, Lúcia Helena Rapp.

Type

Article

Date of Publication

2009-4-1

Original Publication

Check list : journal of species lists and distribution

Volume

5

Series / Issue

Issue: 2

Pages

154--172

Contributed by

Pensoft Publishers

Language

English

Published by

[São Paulo, Brazil] Luís Felipe Toledo 2005-

Identifiers

DOI: https://doi.org/10.15560/5.2.154

 

Abstract

This study was conducted in an Amazonas state conservation unit, the Catuá-Ipixuna Extractive Reserve (Catuá-Ipixuna RESEX). The main purpose was to provide an ichthyological survey of its small streams, all them tributaries of the Solimões River. Nine small streams (up to 4 m width and 1 m depth) were sampled in September 2006. A total of 1,525 specimens were captured, belonging to 78 species, 24 families and eight orders. Eight species had higher abundances and represented altogether 61.4 % of all collected specimens (Hemigrammus belotii, Microphilypnus amazonicus, Physopyxis ananas, Apistogramma agassizii, Elachocharax pulcher, Apistogramma cf. cruzi, Gladioglanis conquistador and Copella nigrofasciata). Based on the high number of singletons and doubletons present in our samples, as well as the estimated number of species for those streams (106 spp.), we believe that the total fish species richness present in the Catuá-Ipixuna Extractive Reserve may be considerably higher than indicated by our samples. This seems especially true when considering the dimensions of the Catuá-Ipixuna RESEX and the dense hydrographic network present in the area.