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许多膜翅目寄生蜂在寄主栖息地和寄主定位过程中受化学刺激物的支配(Weseloh,1981;Noldus,1989),在寄主定向和接受行为方面,赤眼蜂利用多种来源于寄主的化学刺激物——利它素(Nordlund等,1976)。寄主鳞片及鳞片正己烷提取物可增强赤眼蜂寄主搜索反应和提高对寄主的寄生率(Lewis等,1972、1985;Shu等,1986;Noldus,1989;王锦举等,1990)。玉米螟赤眼蜂是亚洲玉米螟的优势卵寄生蜂(张荆等,1990),引进到德国后经室内研究表明,其对欧洲玉米螟卵的偏嗜性很强,箱笼及温室条件下对欧洲玉米螟卵
Many Hymenoptera parasitoids are dominated by chemical stimuli during host habitat and host localization (Weseloh, 1981; Noldus, 1989) and in the host orientation and accepting behavior, Trichogramma uses a variety of host-derived chemistries Irritant - Ritalin (Nordlund et al., 1976). Host scales and scales n-hexane extract can enhance T. red eye bee host search response and increase host parasitism (Lewis et al., 1972, 1985; Shu et al., 1986; Noldus, 1989; Wang Jinju et al., 1990). Trichogramma ostriniae is the dominant egg-parasitoid of the Asian corn borer (Zhang et al., 1990). After its introduction into Germany, it has been shown by laboratory studies that it has a high preference for the European corn borer eggs. In the cage and greenhouse conditions, European corn borer eggs