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首页> 美国卫生研究院文献>Insects >Can Isogroup Selection of Highly Zoophagous Lines of a Zoophytophagous Bug Improve Biocontrol of Spider Mites in Apple Orchards?
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Can Isogroup Selection of Highly Zoophagous Lines of a Zoophytophagous Bug Improve Biocontrol of Spider Mites in Apple Orchards?

机译：食虫性昆虫高度食虫性品系的同族选择能否改善苹果园中蜘蛛螨的生物防治？

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Zoophytophagous predators provide benefits in agroecosystems when feeding on pests, but they can also cause crop damage. Optimizing the use of zoophytophagous predators as biocontrol agents would require improving pest control and/or limiting damage. Populations of a zoophytophagous species can be composed of a mix of individuals diverging in their level of diet specialization. Consequently, depending on their level of zoophagy, individuals would vary widely in the benefits and risks they provide to pest management. We tested the hypothesis that manipulating the composition of the population of a zoophytophagous insect, the mullein bug, Campylomma verbasci (Hemiptera: Miridae), towards an increased zoophagy would increase their net benefit in an apple orchard. We compared the inherent benefits and risks of two different isogroup lines of mullein bug that genetically differed in their level of zoophagy. In spring, when damage occurs, both strains infrequently punctured apple fruit, which rarely lead to damage and therefore represented a low risk. During summer, only the highly-zoophagous line impacted the spider mite population, while the lowly-zoophagous line did not differ from the control treatments. We concluded that manipulating the composition of the zoophytophagous predator population provided extra net benefits that improved pest control.
机译：食虫性捕食者捕食害虫时可为农业生态系统带来好处，但它们也会造成农作物损害。优化使用食草性捕食者作为生物防治剂将需要改善害虫控制和/或限制破坏。食虫动物的种群可以由饮食专业水平不同的个体组成。因此，根据动物的吞噬水平，个体为害虫管理提供的收益和风险将有很大差异。我们测试了这样一个假设，即操纵一种食植物昆虫，毛虫臭虫Campylomma verbasci（Hemiptera：Miridae）的种群组成以增加其自噬能力，将会增加它们在苹果园中的净收益。我们比较了两种不同的mullein bug等位基因系的固有收益和风险，这两种基因在其吞噬水平上存在遗传差异。在春季，当发生损害时，两种菌株都很少刺破苹果果实，很少导致损害，因此风险很低。在夏季，只有高生食系影响红蜘蛛种群，而低生食系与对照处理没有区别。我们得出的结论是，控制食虫性捕食者种群的组成可提供额外的净收益，从而改善害虫控制。

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