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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

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

Abstract Source:

Environ Sci Pollut Res Int. 2017 Feb ;24(5):4528-4536. Epub 2016 Dec 10. PMID: 27943158

Abstract Author(s):

Yanhua Wang, Guiling Yang, Dejiang Dai, Zhenlan Xu, Leiming Cai, Qiang Wang, Yijun Yu

Article Affiliation:

Yanhua Wang

Abstract:

In the present study, we evaluated the individual and mixture toxicities of imidacloprid and other four pesticides (atrazine, chlorpyrifos, butachlor, andλ-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, λ-cyhalothrin, and butachlor had the highest toxicities to D. rerio with an LC50 value ranging from 0.28 (0.13∼0.38) to 0.45 (0.31∼0.59) mg AI L(-1), followed by atrazine with an LC50 value of 15.63 (10.71∼25.76) mg AI L(-1), while imidacloprid exhibited the least toxicity to the organisms with an LC50 value of 143.7 (99.98∼221.6) mg AI L(-1). Seven pesticide mixtures (two binary mixtures of imidacloprid + atrazine and imidacloprid + λ-cyhalothrin, two ternary mixtures of imidacloprid + atrazine + λ-cyhalothrin and imidacloprid + butachlor + λ-cyhalothrin, two quaternary mixtures of imidacloprid + atrazine + chlorpyrifos + λ-cyhalothrin and imidacloprid + chlorpyrifos + butachlor + λ-cyhalothrin, and one quinquenary mixture of imidacloprid + atrazine + chlorpyrifos + butachlor + λ-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 theenvironmental risk evaluation of pesticides.

Study Type : Animal Study
Additional Links
Problem Substances : Pesticides : CK(827) : AC(95)

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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