所选单萜类化合物和迷迭香油对暗黑叩头虫（鞘翅目：叩头虫科）的杀虫活性。

Insecticidal activity of selected monoterpenoids and rosemary oil to Agriotes obscurus (Coleoptera: Elateridae).

作者信息

Waliwitiya Ranil, Isman Murray B, Vernon Robert S, Riseman Andrew

机构信息

Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, BC, Canada V6T 1Z4.

出版信息

J Econ Entomol. 2005 Oct;98(5):1560-5. doi: 10.1093/jee/98.5.1560.

DOI:10.1093/jee/98.5.1560

PMID:16334324

Abstract

Acute toxicities of three naturally occurring monoterpenoid essential oil constituents and the essential oil of rosemary were tested against late instars of Agriotes obscurus (L.) (Coleoptera: Elateridae). Both contact and volatile toxicities of thymol, citronellal, eugenol, and rosemary oil were determined. Also, phytotoxicity of these compounds was evaluated on corn germination and seedling development. Thymol had the greatest contact toxicity (LD50 = 196.0 microg/larva), whereas citronellal and eugenol were less toxic (LD50 = 404.9 and 516.5 microg/larva, respectively). Rosemary oil did not show any significant contact toxicity, even at 1,600 microg/larva. In terms of volatile toxicity, citronellal was the most toxic to wireworm larvae (LC50 = 6.3 microg/cm3) followed by rosemary oil (LC50 = 15.9 microg/cm3), thymol (LC50 = 17.1 microg/cm3), and eugenol (LC50 = 20.9 microg/cm3). Thymol, eugenol, and citronellal significantly inhibited corn seed germination and development, whereas rosemary oil had only minimal phytotoxic effects.

摘要

测试了三种天然存在的单萜类精油成分以及迷迭香精油对暗黑叩头虫（Agriotes obscurus (L.)）（鞘翅目：叩头虫科）末龄幼虫的急性毒性。测定了百里香酚、香茅醛、丁香酚和迷迭香油的接触毒性和挥发性毒性。此外，还评估了这些化合物对玉米发芽和幼苗发育的植物毒性。百里香酚具有最大的接触毒性（LD50 = 196.0微克/幼虫），而香茅醛和丁香酚毒性较小（LD50分别为404.9和516.5微克/幼虫）。即使在1600微克/幼虫的剂量下，迷迭香油也未表现出任何显著的接触毒性。就挥发性毒性而言，香茅醛对金针虫幼虫毒性最大（LC50 = 6.3微克/立方厘米），其次是迷迭香油（LC50 = 15.9微克/立方厘米）、百里香酚（LC50 = 17.1微克/立方厘米）和丁香酚（LC50 = 20.9微克/立方厘米）。百里香酚、丁香酚和香茅醛显著抑制玉米种子发芽和发育，而迷迭香油仅具有最小的植物毒性作用。