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The introduction of the African catfish Clarias gariepinus (Burchell, 1822) into Brazilian inland waters: a growing threat

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Author(s): Gecely Rodrigues Alves Rocha

Journal: Neotropical Ichthyology
ISSN 1679-6225

Volume: 6;
Issue: 4;
Start page: 693;
Date: 2008;
Original page

Keywords: Freshwater | Fish | Exotic species | Sharptooth catfish

ABSTRACT
The biology of the introduced species Clarias gariepinus in lagoa Encantada (Ilhéus, Bahia State) was studied. Samples were obtained with gillnets between May 2002 and February 2004. All individuals caught exceeded the average length at first maturity cited in literature. Males and females in maturation stages indicate that the species is already established in the lake.A biologia de Clarias gariepinus, uma espécie introduzida, foi estudada na lagoa Encantada (Ilhéus, Bahia). As amostras foram obtidas com rede de espera, entre maio de 2002 e fevereiro de 2004. Todos os indivíduos capturados estavam acima do tamanho médio de primeira maturação citado na literatura. A ocorrência de machos e fêmeas em estágio de maturação indica que a espécie já está estabelecida na lagoa.
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