Department of Entomology, Texas A&M University, 77843, College Station, Texas.
J Chem Ecol. 1984 Nov;10(11):1535-41. doi: 10.1007/BF00988422.
Gas chromatographic analysis revealed that chemicals attractive toCampoletis sonorensis (Cameron), previously identified in cotton, were not present in wheat germ diet-rearedHeliothis virescens (F.) larvae. Diet-reared larvae fed cotton obtained the chemicals from cotton, with the consequence of enhanced kairomonal activity of the larvae and their frass toC. sonorensis. Parasitoids, presented a choice between cotton, cotton plus hosts, hosts alone, and control in an olfactometer, responded non-randomly, with the greatest number of responses to cotton plus hosts, and three times as many responses to cotton alone as to larvae alone. The role of the plant in the parasitoid-host relationship is discussed.
气相色谱分析显示，先前在棉花中鉴定出的对 Campoletis sonorensis（卡梅隆）有吸引力的化学物质在小麦胚芽饲养的 Heliothis virescens（F.）幼虫中并不存在。以棉花为食的饲养幼虫从棉花中获得了这些化学物质，导致幼虫及其粪便对 C. sonorensis 的信息素活性增强。在嗅觉仪中，寄生蜂可以在棉花、棉花加宿主、宿主单独和对照之间进行选择，它们的反应是非随机的，对棉花加宿主的反应最多，而对单独的棉花的反应是单独的幼虫的三倍。讨论了植物在寄生蜂-宿主关系中的作用。
