蚜虫是危害作物最重要的害虫之一,它不仅吮吸植物汁液降低作物产量,而且还传播植物病毒,给植物造成更大危害。利用蚜虫自己的“语言”来控制蚜虫,这是最近较为引人瞩目的研究。英国洛桑实验站的科学家已鉴定出了蚜虫分泌的一种化学物质,它能对其它的蚜虫起警戒作用,这种物质叫报警激素,是一种对环境安全面对蚜虫有专效的物质。当取食的蚜虫察觉到这种物质时,便迅速收回正在取食的口器而逃 Aphids are one of the most harmful pests that endanger crops. They not only suck plant juice and reduce crop yields, but they also spread plant viruses, causing even greater damage to plants. The use of aphids’ own “language” to control aphids is a recent and much-anticipated study. Scientists at the Lausanne pilot station in the United Kingdom have identified a chemical secreted by aphids that can alert other aphids called the alarm hormone, a substance that is specific to the environment and safe to aphids. When the feeding aphids are aware of this material, they quickly recover the mouthparts being fed to flee