松墨天牛对雪松精油及其单烯的选择行为反应

Choice Behavior of Bursaphelenchus xylophilus to Cedrus deodara Essential Oil and Monoene

为探讨寄主挥发物在成虫寄主选择中的作用,为开发和利用引诱剂提供依据,利用Y型嗅觉仪,测试了松墨天牛(Monochamus alternatusHope)对雪松精油及其单烯的选择行为。结果表明:200倍的雪松精油有明显引诱作用,引诱效果好于50倍和1000倍;马尾松精油、雪松精油模拟物(α-蒎烯∶β-蒎烯∶柠檬烯∶莰烯∶月桂烯=50∶40∶10∶1∶3)、味源物a(α-蒎烯∶β-蒎烯=1∶1)对松墨天牛雌成虫具有明显引诱作用;雪松精油模拟物对松墨天牛雌成虫的引诱能力大于味源物a,味源物a对松墨天牛雌成虫引诱能力显著高于α-蒎烯;3组对比处理,马尾松精油-雪松精油、雪松精油-雪松精油模拟物和味源物a-味源物b(α-蒎烯∶β-蒎烯=10∶1)之间对松墨天牛雌成虫的引诱作用无明显差异。

The choice behavior of Monochamus alternatus to Cedrus deodara essential oil and monoene was determined by Y olfactometry to probe the effect of host volatile on host choice of Monochamus alternatus adults and to provide the scientific basis for development and utilization of attractants.The results showed that the attracting action of 1/200 Cedrus deodara essential oil was the highest among all treatments,the essential oil of Chinese red pine,simulative of Cedrus deodara essential oil（α-pinene∶β-pinene∶limonene∶camphene∶mycrene=50∶40∶10∶1∶3） and odor source A（α-pinene： β-pinene=1∶1） had the obvious attracting action to female Monochamus alternatus adults,the simulative of Cedrus deodara essential oil had better attracting action to female Monochamus alternatus adults compared with odor source A,the attracting ability of odor source A was significantly higher than α-pinene and there was no significant difference in attracting action among Chinese red pine essential oil ＋ Cedrus deodara essential oil,Cedrus deodara essential oil ＋ simulative of Cedrus deodara essential oil and odor source A＋odor source B（α-pinene： β-pinene=10∶1）.