Xylocoris species (Hemiptera: Anthocoridae) are known to occur in various habitats and attack a diversity of agriculturally important prey. Other groups of organisms, such as strains of Bacillus thuringiensis Berliner (Bt) bacteria, also have been extensively studied and applied as biological control agents. The use of these Bt‐bioinsecticides in association with predators may be a good strategy in integrated pest management. This work had the objective to study predator behaviour, predatory capacity, and functional response of fifth‐instar nymphs of Xylocoris sordidus (Reuter) to eggs of Plutella xylostella (L.) (Lepidoptera: Plutellidae) and Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) treated with one of three commercial Bt‐bioinsecticides. The predator presented a type II functional response to untreated P. xylostella eggs (control) and to eggs treated with Agree, whereas the response was type III to P. xylostella eggs treated with Xentari and Dipel. However, on a diet of C. cephalonica eggs the predator displayed a type II response curve on eggs treated with each of the three bioinsecticides, and a type III response on untreated eggs. Bioinsecticides based on B. thuringiensis may be used in association with X. sordidus predators to control lepidopterous pest species.

中文翻译：

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捕食者Xylocoris sordidus与苏云金芽孢杆菌生物杀虫剂的相互作用

Xylocoris 物种（半翅目：Anthocoridae）已知存在于各种栖息地，并攻击多种农业上重要的猎物。其他生物群，例如苏云金芽孢杆菌柏林 (Bt) 细菌菌株，也已被广泛研究并用作生物防治剂。将这些 Bt 生物杀虫剂与捕食者结合使用可能是综合害虫管理的一个很好的策略。这项工作的目的是研究 Xylocoris sordidus (Reuter) 五龄若虫对 Plutella xylostella (L.) (Lepidoptera: Plutellidae) 和 Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) 用三种商业 Bt 生物杀虫剂之一处理。捕食者对未经处理的 P 表现出 II 型功能反应。小菜蛾卵（对照）和用 Agree 处理的卵，而对用 Xentari 和 Dipel 处理的小菜蛾卵的反应是 III 型。然而，捕食者以 C. cephalonica 鸡蛋为食，对用三种生物杀虫剂中的每一种处理过的鸡蛋表现出 II 型反应曲线，对未处理过的鸡蛋表现出 III 型反应。基于 B. thuringiensis 的生物杀虫剂可与 X. sordidus 捕食者联合使用，以控制鳞翅目害虫物种。