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遗传变异与西非Spodoptera frugiperda (Lepidoptera: Noctuidae) 的lambda-cyhalothrin耐药性增加有关

Eric Tossou^1,2, Ghislain T Tepa-Yotto^3,4, Georg Goergen³

¹Agroecohealth Unit , International Institute of Tropical Agriculture (IITA) , 08 P.O. Tri-Postal, Box 0932, Cotonou, Benin. eric.tossou82@gmail.com.

Scientific reports

|July 2, 2025

概括

西非的秋季军对常见的杀虫剂表现出中度的敏感性. 抵抗机制涉及代谢酶和点突变,这对于可持续的害虫控制策略至关重要.

科学领域:

昆虫学昆虫学是一门学科.
虫害管理虫害管理虫害管理
分子生物学分子生物学

背景情况:

秋季军虫 (Spodoptera frugiperda) 是一种破坏性的入侵性害虫,影响着全球农业,特别是玉米作物.
了解杀虫剂易感性和耐药机制对于有效的控制计划至关重要.

研究的目的:

为了描述西非秋季军虫种群的特征.
评估它们对关键杀虫剂 (λ-cyhalothrin, chlorpyrifos, emamectin benzoate) 的敏感性.
调查潜在的抵抗机制,包括点突变和生化途径.

主要方法:

使用RFLP-PCR和TPI测序进行种群表征.
昆虫杀虫剂敏感性的生物测试.
协同作用测试用于评估代谢酶作用.
定量PCR (qPCR) 用于目标突变分析.

主要成果:

主要确定了玉米菌株种群 (72.5-100%).
对于 λ-cyhalothrin,pyrifos 和 emamectin benzoate 观察到易受中度毒性.
代谢酶 (氧化酶,雌激酶,GST) 在l-cyhalothrin耐药性中起到中等作用.
与生物化学机制和特定突变 (F290V,T929I) 相关的对有机酸盐和铁酸盐的耐药性.

结论:

提供了关于秋季军虫在西非抗虫剂耐药性的关键数据.
为开发可持续的害虫管理和耐药性管理策略提供信息.
强调生物化学机制和点位突变在抗昆虫剂耐药性的联合作用.

关键词:

在C-菌株.秋季军虫秋季军虫昆虫杀虫剂耐药性昆虫杀虫剂耐药性这就是R-strain.阻力管理阻力管理目标位点突变的突变西非西非是西非的一个地区.

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