Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
Korea Institute of Insect Pheromone, Hanbat National University, Daejeon, 34158, Republic of Korea.
J Chem Ecol. 2020 Oct;46(10):927-934. doi: 10.1007/s10886-020-01214-1. Epub 2020 Sep 15.
The dotted white geometrid moth, Naxa seriaria Motschulsky (Lepidoptera: Geometridae), is a pest of Oleaceae in Korea, Japan, and China. In this study, we identified (3Z,6Z,9Z,12Z,15Z)-heneicosapentaene (C-21 pentaene) as the only compound in extracts of the pheromone glands of female N. seriaria causing a response from receptors on the antennae of males in analyses by gas chromatography with electroantennographic detection. The synthetic sex pheromone elicited dose-dependent electrophysiological responses from antennae of male N. seriaria. In field tests, more male moths were captured in traps baited with synthetic C-21 pentaene than in unbaited traps, and increasing the loading of C-21 pentaene in the lure increased catches of male moths. Significantly more male N. seriaria moths were caught in delta traps than in bucket traps. Based on these results, C-21 pentaene is proposed to be the major, if not the only, component of the sex pheromone of N. seriaria.
白点带卷叶野螟，Naxa seriaria Motschulsky（鳞翅目：尺蛾科），是韩国、日本和中国的木犀科植物害虫。在这项研究中，我们通过气相色谱与触角电位联用分析，鉴定出性信息素腺体提取物中的（3Z，6Z，9Z，12Z，15Z）-二十一碳五烯（C-21 五烯）是唯一一种能引起雄性触角上受体反应的化合物。合成性信息素能引起雄性 N. seriaria 触角产生剂量依赖性的电生理反应。在田间试验中，与未加诱饵的诱捕器相比，用合成的 C-21 五烯诱捕的雄性飞蛾更多，而在诱捕器中增加 C-21 五烯的负载量会增加雄性飞蛾的捕获量。与桶状诱捕器相比，Delta 诱捕器能捕获到更多的雄性 N. seriaria 飞蛾。基于这些结果，C-21 五烯被提议为 N. seriaria 性信息素的主要成分，如果不是唯一成分的话。
