非寄主挥发物对针叶树小蠹虫作用的研究进展

针叶树小蠹虫不仅能通过信息化学物质识别和回避非寄主生境,而且能识别非寄主树种和不适寄主树。非寄主挥发物,尤其是6碳乙醇等绿叶气体和一些8碳醇等树皮挥发物是代表着非寄主的重要气味信号,在针叶树小蠹虫寻找寄主的过程中有重要意义。本文分别对绿叶气体和非寄主树皮挥发物等的研究基础、小蠹虫对非寄主的回避、影响挥发物释放的因素、非寄主挥发物的采集分析、生物测定方法和非寄主挥发物作用的生态学及进化意义等方面的研究现状和进展进行了综述,认为小蠹虫能在混交林中找到寄主不是单因素决定的,是受多因素影响的结果。非寄主挥发物在针叶树小蠹虫的管理中具有广阔的应用前景。

Research Progress in the Effects of Non-host Volatiles to Conifer-inhabiting Bark Beetles

Conifer bark beetles are able not only to recognize, but also to avoid non-host habitats, non-host species and unsuitable hosts by semiochemicals. Green leaf volatiles (GLV), especially C₆-alcohols from the leaves and C₈-alcohols from bark of non-host angiosperm trees may represent non-host odor signals, and play important roles in the host searching process of conifer-inhabiting bark beetle. The study bases of GLV and avoidance of non-host volatiles, the factors affecting tree volatile emissions, collection, analysis and bioassay methods of non-host volatiles, ecological and evolutionary significance of non-host volatiles were summarized. The bark beetle searching for suitable host was not the result of a single factor but multiple signals. Non-host volatiles could be used in the management of conifer-inhabiting bark beetle.