褐飞虱对噻虫嗪和烯啶虫胺的抗性风险评估

Journal of Environmental Entomology(2013)

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Abstract
采用稻茎浸渍法,测定了广州市本地褐飞虱种群对噻虫嗪和烯啶虫胺的室内毒力,评估褐飞虱对其的抗性风险。结果表明:广州本地褐飞虱种群对噻虫嗪和烯啶虫胺的LC50分别为0.2857mg/L和0.5022mg/L,分别是敏感品系LC50的2.67倍和1.06倍,仍属敏感水平。室内抗性筛选结果表明:经过30代的连续筛选后,噻虫嗪的抗性上升829.80倍,达到极高抗性水平,烯啶虫胺的抗性上升31.70倍,达到中等抗性水平,表明褐飞虱对噻虫嗪和烯啶虫胺存在抗性风险的可能。根据试验结果,对褐飞虱噻虫嗪和烯啶虫胺抗性的预防治理提出了应用策略。
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