Effect of methyl parathion on the muscle and brain acetylcholinesterase activity of matrinxã (Brycon cephalus)

Ciência Rural

Luciana Cristina De Almeida²  Lúcia Helena Aguiar²  Gilberto Moraes¹ 

[1] ,Universidade Federal de São CarlosSão Carlos SP ,Brasil

关键词: acetylcholinesterase;    methyl parathion;    matrinxã;    toxicity;    acetilcolinesterase;    metil paration;    matrinxã;    toxicidade;   

DOI  :  10.1590/S0103-84782005000600029

来源: SciELO

【 摘 要 】

Farming of the freshwater fish is emerging in Brazil and many species from the wild are promising. The teleost matrinxã (Brycon cephalus) holds several characteristics such as fast growth rate, high commercial value and adaptability to artificial raring conditions, which make it a promising species for commerce. The use of pesticides in aquatic environment is frequent in Brazil, and methyl parathion is very common in aquaculture. We have determined the enzymatic activity of acetyl cholinesterase in white muscle and brain of matrinxã exposed to 2ppm of environmental methyl parathion for 24 hours. There was 64% and 69% of acetyl cholinesterase inhibition in muscle and brain respectively. These activities were not recovered after 8 days from exposure to this pesticide. It can be concluded that acetyl cholinesterase from those tissues was inhibited by small amounts of methyl parathion, and the main effect was observed in the brain.

【 授权许可】

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