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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fish assemblage structure of the Ipanema River, a small lotic environment partially protected by a Conservation Unit in southeastern Brazil

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Author(s):
AK Oliveira [1] ; F Apone [2] ; JLO Birindelli [3] ; JC Garavello [4]
Total Authors: 4
Affiliation:
[1] Universidade Federal de São Carlos – UFSCar. Departamento de Ciências Ambientais - Brasil
[2] Univ Sao Paulo, FFCLRP, Dept Biol, LIRP, BR-14040901 Ribeirao Preto, SP - Brazil
[3] Universidade Estadual de Londrina – UEL. Departamento de Biologia Animal e Vegetal - Brasil
[4] Universidade Federal de São Carlos – UFSCar. Departamento de Ecologia e Biologia Evolutiva. Laboratório de Ictiologia Sistemática - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Brazilian Journal of Biology; v. 73, n. 2, p. 259-270, 2013-05-00.
Abstract

A study on the fish assemblage of the Ipanema River, a small affluent of the Tietê River basin in southeastern Brazil, was performed aiming to look for structural patterns of species diversity in small lowland lotic environments. Fish samplings were performed every two months from June 2003 to April 2004 at four sample sites located on the lower stretch of the river. Local assemblage showed to be species rich, with fifty-two species belonging to Characiformes (25 spp.), Siluriformes (19 spp.), Cyprinodontiformes (3 spp.), Gymnotiformes (2 spp.), Perciformes (2 spp.), and Synbranchiformes (1 sp.). Fish fauna was composed of small-sized species (<200 mm SL) and by individuals of medium (up to 400 mm SL) to large (more than 400 mm SL) sized species. The Ipanema River, such as other small lotic transitional environments in the upper Paraná River drainage, is considered important for conservation of fish fauna because they cover available habitats for persistent populations of small-sized species and for non-persistent individuals or shoals of medium and large-sized fish species, which occupy other habitats along their life-history (e. g. floodplains, oxbow lakes, main channel of great rivers). The importance of the Ipanema River basin for fish fauna conservation is also reinforced by the fact that it is located in a highly impacted region of southeastern Brazil, near the São Paulo metropolitan area. (AU)