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Effects of chlorantraniliprole on reproductive and migration-related traits of Spodoptera frugiperda

文献类型： 外文期刊

作者： Lv, Weixiang;Yan, Yi;Ma, Yu;Jiang, Xingfu;Deng, Keran;Xie, Dianjie;Cheng, Yunxia;Liu, Nannan;Zhang, Lei

作者机构：

关键词： fall armyworm;flight;reproduction;vitellogenin;adipokinetic hormone

期刊名称： ENTOMOLOGIA GENERALIS

ISSN： 0171-8177

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Chlorantraniliprole (CHL) is an important anthranilic diamide insecticide extensively used to control the fall armyworm (FAW), Spodoptera frugiperda (J.E.Smith), a notorious migratory polyphagous pest. While the toxicological effects of CHL on FAW have garnered attention, the adaptive mechanisms of migration and reproduction in response to CHL stress remains poorly understood in FAW. This study investigates the development, reproduction, and flight of FAW to evaluate their migratory and reproductive strategies in response to sublethal concentrations of CHL. The underlying mechanisms of induced fecundity and migration associated with the vitellogenin (Vg) and adipokinetic hormone (AKH) genes were further investigated. Results indicated that the LC10 concentrations of CHL significantly inhibited the larvae and pupae development and adults (moths) reproduction, while enhancing flight performance. Conversely, LC20 concentrations of CHL drastically increased reproductive capacity but reduced flight performance. Enhanced expression levels of Vg were observed under LC20 CHL exposures but significantly downregulated in LC10 CHL exposure. Conversely, AKH expression was high in LC10 CHL exposure but decreased significantly in LC20 CHL exposure. Knockdown of Vg reduced egg laying and ovarian protein content in female FAW, while silencing the AKH significantly reduced flight performance as well as the glycogen and triglyceride contents in flight muscles. This study suggests that LC20 CHL-induced population resurgence and LC10 CHL-induced migration might occur in FAW after exposure to sublethal concentrations. These findings highlight the flexible survival strategies of FAW under CHL stress and could provide insight to optimize CHL usage for controlling FAW resurgence in the field.

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