Li Doudou, Cai Xinyan, Qi Yixiang, Lu Yongyue, Li Xinlian
Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510640, China.
Insects. 2024 Jun 11;15(6):440. doi: 10.3390/insects15060440.
Fruit flies cause substantial economic damage, and their management relies primarily on chemical insecticides. However, pesticide resistance has been reported in several fruit fly species, the mitigation of which is crucial to enhancing fruit fly control. Here, we assess the toxicity of a novel insecticide (fluralaner) and a common insecticide (dinotefuran) against three fruit fly species, (Hendel), (Coquillett), and (Walker). Both pesticides exhibit robust lethal and sublethal effects against all three fruit fly species, with fluralaner being more potent. Fluralaner and dinotefuran suppress the reproductive capacities and survival rates of fruit flies. However, at the 50% lethal concentration, fluralaner stimulates the reproductive capacity of and the survival rate of . Fluralaner also causes significant transgenerational effects, impacting the offspring hatching rate of and and reducing the proportion of female offspring. Thus, both pesticides exhibit high potential for controlling fruit flies. However, their application should be tailored according to species variations and the diverse effects they may induce. Collectively, the findings of this study outline the sublethal effects of two insecticides against fruit flies, helping to optimize their application to ensure the effective management of insecticide resistance.
果蝇会造成重大经济损失，其防治主要依赖化学杀虫剂。然而，已有报道称几种果蝇对杀虫剂产生了抗性，减轻这种抗性对于加强果蝇防治至关重要。在此，我们评估了一种新型杀虫剂（氟虫腈）和一种常用杀虫剂（噻虫嗪）对三种果蝇的毒性，即 （亨德尔）、 （科基利特）和 （沃克）。这两种杀虫剂对所有三种果蝇都表现出强大的致死和亚致死效应，其中氟虫腈的效果更强。氟虫腈和噻虫嗪会抑制果蝇的繁殖能力和存活率。然而，在50%致死浓度下，氟虫腈会刺激 的繁殖能力和 的存活率。氟虫腈还会产生显著的跨代效应，影响 和 的后代孵化率，并降低雌性后代的比例。因此，这两种杀虫剂在防治果蝇方面都具有很高的潜力。然而，它们的应用应根据物种差异以及可能产生的不同影响进行调整。总体而言，本研究结果概述了两种杀虫剂对果蝇的亚致死效应，有助于优化其应用以确保有效管理杀虫剂抗性。
