Kumar Amit, Sharma Bechan, Pandey Ravi Shankar
Department of Zoology, University of Allahabad, Allahabad 211002, India.
Bull Environ Contam Toxicol. 2007 Dec;79(6):613-6. doi: 10.1007/s00128-007-9282-8. Epub 2007 Oct 9.
In the present study, the acute toxicity of the pyrethroid pesticides, cypermethrin and lambda-cyhalothrin was conducted for a 96 h period using Channa punctatus. The LC(50) values of cypermethrin and lambda-cyhalothrin were found to be 0.4 mg/L and 7.92 mug/L, respectively. The lambda-cyhalothrin was found to be about 50 times more toxic to the fish than cypermethrin. The behavioral pattern of C. punctatus got severely altered in each group due to pesticide treatment. The results suggested that even at low concentrations, these pyrethroid compounds may exert toxic effects, markedly modifying their behavioral pattern.
在本研究中，使用斑鳢对拟除虫菊酯类农药氯氰菊酯和高效氯氟氰菊酯进行了为期96小时的急性毒性试验。氯氰菊酯和高效氯氟氰菊酯的半数致死浓度（LC50）值分别为0.4毫克/升和7.92微克/升。结果发现，高效氯氟氰菊酯对鱼类的毒性约为氯氰菊酯的50倍。由于农药处理，每组斑鳢的行为模式都发生了严重改变。结果表明，即使在低浓度下，这些拟除虫菊酯类化合物也可能产生毒性作用，显著改变其行为模式。
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