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在遇到外敌侵袭时,许多昆虫能分泌化学物质来进行防御。这些防御物质有利于释放者,它是典型的利已素(Allomones)。关于昆虫防御物质的研究可追溯到十七世纪对蚂蚁蒸馏物的研究。近二十年来,在分离、鉴定防御物质等方面做了大量工作,有较广泛的研究。Blum.M.S.(1981)在他的专著中有详尽的综述。Pasteels J.M.等(1983)就防御物质的化学生态做了很好的评述。
Many insects secrete chemicals to defend themselves in encountering foreign enemies. These defensive substances favor the deliverer, which is typical of Allomones. Research on insect defense substances dates back to the study of ant distillates in the seventeenth century. In the past two decades, a great deal of work has been done on the separation and identification of defensive substances, and a wider range of research has been done. Blum.M.S. (1981) has an exhaustive overview in his monograph. Pasteels J.M. et al. (1983) provide a good review of the chemical ecology of defensive substances.