Data/hora: 05/06/2024 12:36:20

Provedor de dados: | 83
País: | Brazil
Título: | Swimbladder abnormalities in piapara (Leporinus obtusidens) captured downstream of the Funil Dam
Autores: | Felizardo,Viviane de Oliveira; Andrade,Estefânia de Souza; Murgas,Luis David Solis; Winkaler,Elissandra Ulbricht; Wouters,Flademir.
Data: | 2010-01-01
Ano: | 2010
Palavras-chave: | Fish mortality; Migratory fish; Pressure changes; Reservoir.
Resumo: | Fish damage in hydroelectric stations has been extensively reported, but further investigations focusing on Brazilian migratory species, especially large fish, are needed. The present study describes swimbladder abnormalities in piapara Leporinus obtusidens, a migratory physoclistous species, collected downstream from the Funil Hydroelectric station dam, Minas Gerais, Brazil. The 117 specimens collected were dissected for swimbladder evaluation in the coelomic cavity. The abnormalities detected in 14 of the fish (12%) were swimbladder rupture with exteriorization (N = 12) and formation of sac-like projections (N = 2). The specimens that had swimbladder abnormalities weighed over 1300 g for both sexes. These abnormalities may be caused by bladder infections, however, inflammation process were not detected in these fish. The presence of anomalies in swimbladder suggests that the individuals were subjected to sudden depressurization, possibly related to passage through the turbines. Further comparative studies are needed to corroborate this hypothesis.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300012
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252010000300012
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.8 n.3 2010
Fonte: | info:eu-repo/semantics/openAccess