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Individual and mixture effects of five agricultural pesticides on zebrafish (Danio rerio) larvae

文献类型： 外文期刊

作者： Wang, Yanhua 1 ; Yang, Guiling 1 ; Dai, Dejiang 2 ; Xu, Zhenlan 1 ; Cai, Leiming 1 ; Wang, Qiang 1 ; Yu, Yijun;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, State Key Lab Breeding Base Zhejiang Sustainable, Key Lab Pesticide Residue Detect,Minist Agr, Hangzhou 310021, Zhejiang, Peoples R China

2.Inst Control Agrochem Zhejiang Prov, Hangzhou 310020, Zhejiang, Peoples R

关键词： Aquatic organism;Mixture toxicity;Imidacloprid;Ecotoxicology

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

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收录情况： SCI

摘要： In the present study, we evaluated the individual and mixture toxicities of imidacloprid and other four pesticides (atrazine, chlorpyrifos, butachlor, and lambda-cyhalothrin) to the zebrafish (Danio rerio) larvae in order to clarify the interactive effects of pesticides on aquatic organisms. Results from the 96-h semi-static toxicity test indicated that chlorpyrifos,.cyhalothrin, and butachlor had the highest toxicities to D. rerio with an LC50 value ranging from 0.28 (0.13 similar to 0.38) to 0.45 (0.31 similar to 0.59) mg AI L-1, followed by atrazine with an LC50 value of 15.63 (10.71 similar to 25.76) mg AI L-1, while imidacloprid exhibited the least toxicity to the organisms with an LC50 value of 143.7 (99.98 similar to 221.6) mg AI L-1. Seven pesticide mixtures (two binary mixtures of imidacloprid + atrazine and imidacloprid + lambda-cyhalothrin, two ternary mixtures of imidacloprid + atrazine + lambda-cyhalothrin and imidacloprid + butachlor +.lambda-cyhalothrin, two quaternary mixtures of imidacloprid + atrazine + chlorpyrifos + lambda-cyhalothrin and imidacloprid + chlorpyrifos + butachlor + lambda-cyhalothrin, and one quinquenary mixture of imidacloprid + atrazine + chlorpyrifos + butachlor + lambda-cyhalothrin) exhibited synergistic effects with equitoxic ratio and equivalent concentration on the zebrafish. Our results highlighted that the simultaneous presence of several pesticides in the aquatic environment might lead to increased toxicity, causing serious damage to the aquatic ecosystems compared with their individual toxicities. Therefore, the toxic effects of both individual pesticides and their mixtures should be incorporated into the environmental risk evaluation of pesticides.

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