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.
Highlights
The introduction of exotic species may have negative impacts on local ecosystems, including the introduction of parasites, and biological competition with native species, which may result in a loss of biodiversity
Initial occurrences resulted from escapes around ten years ago; nowadays, Clarias gariepinus is the largest species caught in lagoa Encantada, being second in biomass at 15 %
The goal of this study was to improve our understanding of the biology of the introduced species Clarias gariepinus in lagoa Encantada
Summary
The introduction of exotic species may have negative impacts on local ecosystems, including the introduction of parasites, and biological competition with native species, which may result in a loss of biodiversity. The biology of the introduced species Clarias gariepinus in lagoa Encantada (Ilhéus, Bahia State) was studied. Males and females in maturation stages indicate that the species is already established in the lake.
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