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

CUI Li-xian1,2,ZHANG Zhen2,HUANG Da-zhuang1(1.College of Forestry,Agricultural University of Hebei,Baoding 071000,Hebei,China;2.Research Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Key Laboratory of Forest Protection,State Forestry Administration,Beijing 100091,China)  
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.
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