Many damaging agricultural pests can, in addition to their direct feeding damage, acquire and transmit plant pathogens. Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) is considered a ‘supervector’ of disease-causing plant pathogens and viruses. One of the most damaging of these is Tomato yellow leaf curl virus (TYLCV), a circulatively transmitted begomovirus than can extensively damage field and greenhouse crops. Because sustained feeding periods are necessary to acquire and transmit circulatively transmitted viruses, pesticides that, in addition to their direct lethality, suppress feeding in surviving individuals may be particularly effective in decreasing viral transmission. We assessed the impact of sulfoxaflor, a sulfoximine insecticide, on the settling preference, feeding, and viral transmission of TYLCV-carrying B. tabaci on tomato. We found that viruliferous B. tabaci avoided both settling and feeding on sulfoxaflor-treated plants, and that sulfoxaflor virtually eliminated the transmission of TYLCV by B. tabaci. The antifeedant properties of sulfoxaflor have previously been reported in other pest systems; our results document similar effects on viruliferous B. tabaci and demonstrate that this pesticide can reduce TYLCV transmission by surviving individuals.

中文翻译：

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Sulfoxaflor 改变烟粉虱 MED（半翅目：粉虱科）偏好、摄食和 TYLCV 传播

许多破坏性农业害虫除了直接破坏食物外，还可以获取和传播植物病原体。烟粉虱 (Hemiptera: Aleyrodidae) 被认为是致病植物病原体和病毒的“超级载体”。其中最具破坏性的是番茄黄叶卷曲病毒 (TYLCV)，这是一种循环传播的贝戈莫病毒，可广泛破坏田间和温室作物。由于持续的进食期对于获取和传播循环传播的病毒是必要的，因此除了直接致死性外，还能抑制幸存个体进食的杀虫剂在减少病毒传播方面可能特别有效。我们评估了亚砜亚胺杀虫剂 sulfoxaflor 对携带 TYLCV 的烟粉虱在番茄上的定居偏好、摄食和病毒传播的影响。我们发现，有毒的烟粉虱避免了在经过磺胺嘧啶处理的植物上沉降和取食，而且磺胺嘧啶实际上消除了烟粉虱对 TYLCV 的传播。磺胺嘧啶的拒食特性之前已在其他害虫系统中报道过；我们的结果记录了对病毒性烟粉虱的类似影响，并证明这种杀虫剂可以减少幸存个体的 TYLCV 传播。