摘要
Simple SummarySince the widespread adoption of Bt cotton in the late 1990s, the green mirid bug,Apolygus lucorum(Hemiptera: Miridae), has become one of the most important pests in cotton fields and some other crops. To manage this destructive pest,Peristenus spretus(Hymenoptera: Braconidae) has been tested in augmentative biological control. In this study, after cotton plants were damaged by different densities ofA. lucorum, the behavioral responses ofA. lucorumandP. spretusto cotton plants volatiles were evaluated, and the quality and quantity of volatiles from cotton plants were analyzed. The results demonstrated that HIPVs emitted by plants in response toA. lucorumcould be influenced by the pest density and could be identified byP. spretusas a signal of the host. Our results would help understand howP. spretusplays a role in biological control againstA. lucorum.AbstractPlants would release herbivore-induced plant volatiles (HIPVs) to repel herbivores and attract natural enemies after being damaged by herbivores. In this study, after cotton plants were damaged by different densities ofApolygus lucorum, the behavioral responses ofA. lucorumandPeristenus spretusto cotton plants volatiles were evaluated, and the quality and quantity of volatiles from cotton plants were analyzed. Only when cotton plants were damaged by four bugs did bothA. lucorumandP. spretusshow an obvious response to damaged cotton plants, which indicates that cotton defense is correlated with pest density. The collection and analysis of volatiles reveals that the increase in pest density results in the emission of new compounds and an increase in the total number of volatiles with an alteration in proportions among the compounds in the blend. These changes in volatile profiles might provide wasps and mirids with specific information on host habitat quality and thus could explain the behavioral responses of parasitoids and pests.Keywords:behavior;pest;natural enemy;HIPVs;density
危险品化学品经营许可证（带存储）