Redox dysregulation and bioaccumulation of copper in tilapia Oreocromis niloticus
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Data
2014-03-01
Autores
Carvalho, Solange de [UNESP]
Tavarez Ranzani Paiva, Maria Jose
Franca, Jakeline Galvao de [UNESP]
Neto, Francisco Filipak
Oliveira Ribeiro, Ciro Alberto de
Lombardi, Julio Vicente
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Editor
Wiley-Blackwell
Resumo
The objective of this study was to evaluate the effect of two concentrations of copper (0.13 and 0.5mgL(-1)) on juveniles of tilapia, Oreocromis niloticus (Linnaeus), using two toxicological assays (I- copper exposure and II- copper exposure followed by recovery). Doses were taken from the liver of the test organisms to determine the concentrations of copper, reduced glutathione, activities of glutathione S-transferase and catalase, and lipid peroxidation. Exposure to copper in both assays resulted in significant accumulation of this metal in the analysed tissue and in decreased concentration of reduced glutathione. There was no alteration in the activities of catalase and glutathione S-transferase and in lipid peroxidation.
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Palavras-chave
Oreocromis niloticus (Linnaeus), oxidative stress, copper sulphate, tilapia, bioaccumulation
Como citar
Aquaculture Research. Hoboken: Wiley-blackwell, v. 45, n. 4, p. 736-741, 2014.