Insecticide toxic effects on Trichogramma ostriniae (Hymenoptera: Trichogrammatidae)

文献类型： 外文期刊

第一作者： Wang, Yanhua

作者： Wang, Yanhua;Chen, Liping;Yu, Ruixian;Zhao, Xueping;Wu, Changxing;Cang, Tao;Wang, Qiang

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关键词： Trichogrammatidae;side effects;biological control;integrated pest management

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

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收录情况： SCI

摘要： BACKGROUND: The parasitoid Trichogramma ostriniae (Pang and Chen) is a major natural enemy of many lepidopterans, but only a few studies have been conducted on the compatibility of biological and chemical controls. In this study, the selectivity of 30 insecticides to T. ostriniae adults was evaluated. RESULTS: Among the seven classes of chemicals tested, organophosphates and carbamates had the highest intrinsic toxicity to the wasp, with LC_(50) values ranging from 0.032 (0.029-0.038) to 2.38 (1.91-3.15) mg Al L~(-1). They are followed by phenylpyrazoles, avermectins, neonicotinoids and pyrethroids, which induce variable toxicity responses, with LC_(50) values ranging from 0.14 (0.11 -0.21) to 56.67 (48.94-67.24) mg Al L~(-1), from 2.57 (1.85-4.28) to 4.48 (3.34-6.83) mg Al L~(-1),from 2.48 (1.80-4.03) to 503.6 (457.6-557.5) mg Al L~(-1) and from 5.44 (3.95-8.84) to 104.2 (92.48-119.7) mg Al L~(-1) respectively. The insect growth regulators (IGRs) exhibited least toxicity to the parasitoid. CONCLUSION: Risk quotient analysis classifies neonicotinoids, avermectins, pyrethroids, IGRs and phenylpyrazoles (with the exception of butane-fipronil and fipronil) as safe agents to the parasitoid, but categorises organophosphates and carbamates as slightly to moderately toxic or dangerous to T. ostriniae.

分类号： S4

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