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| Felizardo,Viviane de Oliveira; Andrade,Estefânia de Souza; Murgas,Luis David Solis; Winkaler,Elissandra Ulbricht; Wouters,Flademir. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish mortality; Migratory fish; Pressure changes; Reservoir. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300012 |
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| Navarro,Fernanda Keley Silva Pereira; Navarro,Rodrigo Diana; Murgas,Luis David Solis; Felizardo,Viviane de Oliveira. |
| Some studies and scientific investments have been done in aquaculture aiming to minimize the stress of the fish due to different factors, as management, nutritional status, water quality, temperature, photoperiod, and salinity. This study aimed to verify the effect of photoperiod on locomotor activity and plasma levels of cortisol and glucose in female Lambari. One hundred and twenty female Lambari adult were maintained in aquaria of 20 liters each in a completely randomized design with three treatments (T1 = 0Light: 24Dark, T2 = 12L: 12D, T3 = 24L: 0D) and four replications. The daily locomotor activity was registered during 15 days using an infrared photocell. After 40 days of experiment and previous fasting for 24 hours, fish were euthanized by a lethal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Synchronizer; Glucose; Cortisol; Swimming behaviour. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200008 |
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