Abstract Integrated control tactics are often necessary for pest management. This is especially true for organisms such as the two-spotted spider mite, Tetranychus urticae Koch. The management of this mite pest species relies on pesticide use, but its short life cycle associated with high selection pressure results in frequent problems of acaricide resistance and population outbreaks. Therefore, combining acaricides and natural enemies is an appealing strategy for managing this pest species. The predatory mite Neoseiulus idaeus Denmark & Muma (Phytoseiidae) is important in arid environments, where other natural enemies show low efficacy. Thus, we investigated the effects of representative acaricides used for managing spider mites around the world in several crops (i.e., abamectin, fenpyroximate, and azadirachtin), on the functional and numerical responses of the phytoseid predator N. idaeus to increasing egg densities of its prey. Acaricide exposure did not affect the type of N. idaeus functional response or attack rate (a). However, acaricide exposure decreased the amount of consumed prey and increased prey handling time (Th). All acaricides affected the numerical response of the predator, which reduced oviposition rates. Therefore, caution is required in attempts to integrate the control methods.

中文翻译：

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杀螨剂对植毒纲捕食者 Neoseiulus idaeus (Acari: Phytoseiidae) 对蜘蛛螨卵功能和数值反应的影响

摘要 病虫害管理往往需要综合控制策略。这对于生物体尤其如此，例如二斑叶螨、Tetranychus urticae Koch。这种螨类害虫物种的管理依赖于农药的使用，但其生命周期短，选择压力高，导致经常出现杀螨剂抗性和种群爆发的问题。因此，将杀螨剂和天敌结合使用是管理这种害虫的一种有吸引力的策略。捕食性螨 Neoseiulus idaeus Denmark & Muma (Phytoseiidae) 在干旱环境中很重要，在那里其他天敌表现出低效率。因此，我们调查了世界各地用于防治多种作物中叶螨的代表性杀螨剂（即阿维菌素、苯吡菌胺和印楝素）的效果，关于植物毒素捕食者 N. idaeus 对其猎物的卵密度增加的功能和数量反应。杀螨剂暴露不影响 N. idaeus 功能反应的类型或发病率 (a)。然而，杀螨剂暴露减少了消耗的猎物数量并增加了猎物处理时间 (Th)。所有杀螨剂都会影响捕食者的数量反应，从而降低产卵率。因此，在尝试整合控制方法时需要谨慎。从而降低产卵率。因此，在尝试整合控制方法时需要谨慎。从而降低产卵率。因此，在尝试整合控制方法时需要谨慎。