| 稻飞虱靶标杀虫剂亚致死剂量多代处理对两种赤眼蜂的影响 |
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| 引用本文： | 谢连城,田俊策,鲁艳辉,徐红星,吕仲贤.稻飞虱靶标杀虫剂亚致死剂量多代处理对两种赤眼蜂的影响[J].中国生物防治学报,2021,37(5):920-926. |
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| 作者姓名： | 谢连城 田俊策 鲁艳辉 徐红星 吕仲贤 |
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| 作者单位： | 浙江省农业科学院植物保护与微生物研究所/农产品质量安全危害因子与风险防控国家重点实验室, 杭州 310021 |
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| 基金项目： | 浙江省重点研发计划（2020C02001）；国家水稻产业技术体系（CARS-01） |
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| 摘 要： | 实验室条件下测定了四种稻飞虱杀虫剂吡虫啉、噻虫嗪、噻嗪酮和烯啶虫胺对稻螟赤眼蜂和螟黄赤眼蜂成蜂和蛹的毒性，以及亚致死剂量对两种赤眼蜂多代的影响。结果表明，四种杀虫剂对稻螟赤眼蜂成蜂中等风险；噻虫嗪对螟黄赤眼蜂成蜂中等风险，其他均安全。四种杀虫剂对两种赤眼蜂蛹均安全。亚致死剂量的噻虫嗪和烯啶虫胺处理可以刺激两种赤眼蜂的寄生力，该刺激作用并不会随着处理次数的增加而衰减。而吡虫啉和噻嗪酮显著降低螟黄赤眼蜂的寄生力，其中随着吡虫啉处理次数的增加，螟黄赤眼蜂的寄生力逐步降低。四种杀虫剂对子代羽化率无显著影响。四种杀虫剂对稻螟赤眼蜂的子代雌性比无显著影响；除吡虫啉外，在噻虫嗪、噻嗪酮和烯啶虫胺多代处理后，螟黄赤眼蜂的子代雌性比均有一定程度的下降。综上所述，如果在放蜂期间必须喷洒杀虫剂防治稻飞虱，建议要避开赤眼蜂成虫期，在放蜂4～6 d后优先选择噻嗪酮或烯啶虫胺。
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| 关 键 词： | 稻飞虱杀虫剂 稻螟赤眼蜂 螟黄赤眼蜂 毒性 亚致死影响 |
| 收稿时间： | 2021-08-15 |
Effects of Sublethal Doses of Rice Planthoppers-target Insecticides on Two Trichogramma Wasps |
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| XIE Liancheng,TIAN Junce,LU Yanhui,XU Hongxing,Lü Zhongxian.Effects of Sublethal Doses of Rice Planthoppers-target Insecticides on Two Trichogramma Wasps[J].Chinese Journal of Biological Control,2021,37(5):920-926. |
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| Authors: | XIE Liancheng TIAN Junce LU Yanhui XU Hongxing Lü Zhongxian |
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| Institution: | State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products/Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China |
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| Abstract: | The toxicity of four insecticides targeting rice planthoppers, which included imidacloprid, thiamethoxam, buprofezin, and nitenpyram, to the adult and pupae of Trichogramma japonicum and T. chilonis were detected. The sublethal dose effects of the insecticides on T. japonicum and T. chilonis were also evaluated over several generations under laboratory. The results showed that the four insecticides targeting rice planthoppers all had moderate toxicity to T. japonicum adults, while to T. chilonis adults, only thiamethoxam was moderate toxic but the other insecticides were safe. The four insecticides had low toxicity to the pupae of the two Trichogramma. Treatments with sublethal doses of thiamethoxam and nitenpyram stimulated the parasitic ability of the two Trichogramma, and the stimulating effect did not decrease with the increase of treatment over generations. However, imidacloprid and buprofezin significantly reduced the parasitic ability of T. chilonis. With the increase of imidacloprid treatment, the parasitic ability of T. chilonis decreased gradually. The four insecticides had no significant effect on the emergence rate of the two Trichogramma offspring or on the female ratio of T. japonicum offspring. Except for imidacloprid, the ratios of females in the offspring of T. chiloni were all slightly decreased when the wasps were treated with thiamethoxam, buprofezin and nitenpyram for multiple generations. In summary, if insecticides must be applied for controlling rice planthoppers during the periods of releasing Trichogramma, buprofezin or nitenpyram would be a good choice and should be applied 4-6 days after the release of Trichogramma. |
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| Keywords: | rice planthoppers-target insecticides Trichogramma japonicum Trichogramma chilonis toxicity sublethal impact |
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