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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.)

First adult record of Misgurnus anguillicaudatus, Cantor 1842 from Ribeira de Iguape River Basin, Brazil

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Author(s):
Caio Isola Dallevo do Amaral Gomes [1] ; Alexandre Peressin [2] ; Mauricio Cetra [3] ; Walter Barrella [4]
Total Authors: 4
Affiliation:
[1] Universidade Federal de São Carlos. Departamento de Ciências Biológicas - Brasil
[2] Universidade Federal de São Carlos. Programa de Pós-Graduação em Diversidade Biológica e Conservação - Brasil
[3] Universidade Federal de São Carlos. Departamento de Ciências Ambientais - Brasil
[4] Pontifícia Universidade Católica de São Paulo. Laboratório de Ecossistemas Aquáticos - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Acta Limnol. Bras.; v. 23, n. 3, p. 229-232, 2012-02-16.
Abstract

AIM: This work aimed to describe a first record of Misgurnus anguilicaudatus, Cantor 1842 in São Paulo state, as well as your potential impacts on native populations. METHODS: The specimen was caught by eletro-fishing device, in Itaguapeva river, Ribeira do Iguape river basin, Ibiuna (SP), Brazil. Later, it was fixed in 10% formalin and taken to laboratory for species identification, morphometric data evaluation, diet analysis and stage of gondal maturity. RESULTS: The individual was an adult female, without parasites and with gonads in maturity stage B, which indicates vascularized ovaries and presence of oocytes in vitellogenesis process. The dietary analysis showed that 95.3% of the stomach was occupied by insect larvae. CONCLUSIONS: The diet analysis may suggest food overlap and consequent competition for food with native species of the genera Trichomycterus e Characidium, which consume essentially the same items. Still, the great morphological similarity with native species, especially Siluriformes, could generate competition for shelters. Additionally, the stage of gonadal maturity and a recorded ability of the species on establish invasive populations in different environments raise concerns about the possibility of Misgurnus anguillicaudatus reproduction on the studied site. (AU)

FAPESP's process: 09/53056-8 - Physical and biotic integrity in headwaters streams of the Atlantic Forest of Southern São Paulo
Grantee:Mauricio Cetra
Support Opportunities: Regular Research Grants