Laboratory Screening and Cross-Resistance Analysis of Alternative Insecticides for Highly-Toxic Pesticides for Controlling Brown Planthopper,Nilaparvata lugens
Laboratory Screening and Cross-Resistance Analysis of Alternative Insecticides for Highly-Toxic Pesticides for Controlling Brown Planthopper,Nilaparvata lugens
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发表时间：
2008
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通讯作者：
Zhou Wei-jun
中科院分区：
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作者：
Zhou Wei-jun
为筛选高毒农药的替代杀虫剂，2005 ~ 2006年在室内采用浸茎法测定了6组20余种杀虫剂对广西南宁、桂林、湖南常德和江苏南京褐飞虱3龄幼虫的毒力。结果表明，噻嗪酮、氟虫腈、噻虫嗪、烯啶虫胺、毒死蜱、异丙威、丙美威和丁硫克百威等可作为高毒农药的潜在替代杀虫剂。经23代的选择，该种群对吡虫啉产生了极高的抗性，抗性倍数为1298.5倍，其LC 50值为103.88 mg/L，是选择前参考菌株LC 50值（16.01 mg/L）的6.5倍。选择N.褐飞虱对氯噻嗪、噻虫啉和啶虫脒表现出明显的交互抗性，而对呋虫胺、噻虫嗪和烯啶虫胺不产生交互抗性。并讨论了害虫抗药性的治理对策。
To screen alternative insecticides for highly-toxic pesticides,toxicities of more than twenty insecticides fallen in six groups to the 3rd instar nymphs of brown planthopper,Nilaparvata lugens populations collected from Nanning and Guilin Cities (Guangxi Zhuang Autonomous Region),Changde City (Hunan Province) and Nanjing City (Jiangsu Province),China were investigated by the rice stem-dipping method in laboratory from 2005 to 2006. Results showed that buprofezin,fipronil,thiamethoxam,nitenpyram,chlopyrifos,isoprocarb,promecarb and carbosulfan could be adopted as potential alternative insecticides for the highly-toxic pesticides. After selection with imidacloprid for 23 generations,the population developed extremely-high level resistance to imidacloprid (1298.5-fold),with a LC50 value of 103.88 mg/L,being 6.5-fold of the value of the original reference strain before the selection (16.01 mg/L). The selected strain of N. lugens showed obvious cross-resistance to imidaclothiz,thiacloprid and acetamiprid,whereas not to dinotefuran,thiamethoxam and nitenpyram. Management strategy of insecticide resistance of the insect was also discussed.