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Compatibility of six reduced-risk insecticides with Orius strigicollis (Heteroptera: Anthocoridae) predators for controlling Thrips hawaiiensis (Thysanoptera: Thripidae) pests

文献类型： 外文期刊

作者： Lin, Tao 1 ; Zeng, Zhaohua 1 ; Chen, Yixin 1 ; You, Yong 1 ; Hu, Jinfeng 1 ; Yang, Fenghua 1 ; Wei, Hui 1 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Plant Protect, Fujian Key Lab Monitoring & Integrated Management, Fuzhou 350013, Peoples R China

2.Minist Agr & Rural Affairs, Fuzhou Sci Observing & Expt Stn Crop Pests, Fuzhou 350013, Fujian, Peoples R China

关键词： Hawaiian flower thrips; Minute pirate bug; Reduced-risk insecticide; Toxicity; Selectivity; Risk assessment

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：7.129； 五年影响因子：7.284 ）

ISSN： 0147-6513

年卷期： 2021 年 226 卷

页码：

收录情况： SCI

摘要： Contact toxicity assessments of six reduced risk insecticides were carried out to compare their selectivity and sensitivity toward the minute pirate bug Orius strigicollis and its prey Thrips hawaiiensis. Additionally, and their potential exposure risk were evaluated for O. strigicollis. The LR50 value of acetamiprid, emamectin benzoate, cyetpyrafen, and indoxacarb to T. hawaiiensis were 0.126, 2.093, 7.486, and 2.264 g a.i. ha-1, respectively, far less than the maximum field recommended rate (MFRR) for each. These four insecticides showed higher selectivity for predator and prey with selectivity ratio values of 37.3, 14.8, 22.1, and 119.3, respectively. However, the LR50 value of acetamiprid and emamectin benzoate were lower than MFRR, and unacceptable (approximately unacceptable for emamectin benzoate) risk to O. strigicollis in in-field, and the opposite results were shown in cyetpyrafen and indoxacarb. Although T. hawaiiensis was more sensitive to abamectin than O. strigicollis, the insecticide had poor selectivity for both test insects. The LR50 value of spirotetramat was more than 3 fold MFRR for T. hawaiiensis and O. strigicollis, showing extremely low contact toxicity and selectivity. In general, acetamiprid, emamectin benzoate, cyetpyrafen, and indoxacarb showed high bioactivity against T. hawaiiensis, but only cyetpyrafen and indoxacarb could be well compatible with O. strigicollis, the combination of two insecticides with O. strigicollis indicated a potential strategy for the efficient and safe control of T. hawaiiensis.

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