高效氯氟氰菊酯对泥鳅的急性毒性及遗传毒性

Acute Toxicity and Genetic Toxicity of Lambda-cyhalothrin to Misgurnus anguillicaudatus

为评价高效氯氟氰菊酯对水生生物的影响,进行了高效氯氟氰菊酯对泥鳅的急性毒性及遗传毒性试验。结果表明:高效氯氟氰菊酯对泥鳅24h、48h和96h的半数致死浓度(LC50)分别为32.41μg/L、24.40μg/L和18.37μg/L,安全质量浓度为4.15μg/L;微核率和核异常率均随着染毒浓度和时间的增加不断升高,呈现明显的时间和剂量效应。根据中国《化学农药环境安全评价试验准则(GB##-2004)》评价标准,高效氯氟氰菊酯对泥鳅为剧毒。

Experiments on the acute toxicity and genetic toxicity of lambda-cyhalothrin to M.anguillicaudatus were conducted to evaluate the effects of lambda-cyhalothrin on aquatic organism.The results showed that the LC50（24 h,48 h and 96 h） of lambda-cyhalothrin were 32.41 μg/L,24.40 μg/L and 18.37μg/L respectively.The safe concentration was 4.15 μg/L.The micronucleus rates and nuclear anomalies rates increased continuously with increasing concentration and duration of exposure,and showed a significant time-dose effect.According to the evaluation criteria of the chemical pesticide environmental safety evaluation test guidelines（GB# #-2004）,lambda-cyhalothrin is highly toxic to M.anguillicaudatus.