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5 种杀虫剂对桉树双面姬小蜂幼虫的毒力测定∗
黄冠杰1, 崔高峰2, 扈丽丽2, 陈刘生2, 黄火成3, 高成龙2
1.广州市从化区吕田林业工作站;2.广东省林业科学研究院;3.广州市林业和园林科学研究院
摘要:
桉树双面姬小蜂 Ophelimus bipolaris 是一种新的入侵性害虫, 属于膜翅目 Hymenoptera 姬小蜂 科 Eulophidae。 2021 年首次在中国广州市记录该物种。 为探究桉树双面姬小蜂的防治策略, 研究筛选了 5 种常用杀虫剂进行室内药效评估, 包括 40%毒死蜱乳油、 5%吡虫啉乳油、 1. 8%阿维菌素乳油、 10%高效 氯氟氰菊酯水乳剂和 40%三唑磷乳油。 试验结果显示, 5 种杀虫剂对桉树双面姬小蜂幼虫展现出不同程度 的防治效果, 40%三唑磷乳油在 40 g·L -1 质量浓度下对桉树双面姬小蜂幼虫的校正致死率最高, 达 84. 48%; 相同质量浓度下, 1. 8%阿维菌素乳油的毒力最强, 对幼虫的致死中质量浓度为 0. 02 g·L -1。综上, 推荐选择阿维菌素用于桉树双面姬小蜂的林间防控。
关键词:  桉树双面姬小蜂  毒力测定  化学防治  杀虫剂
DOI：
分类号:
基金项目:技术服务项目 “林业苗圃有害生物调查技术” (2024JS030-41)。
Toxicity Determination of Five Insecticides on the Larvae of Ophelimus bipolaris
Huang Guanjie1, Cui Gaofeng2, Hu lili2, Chen Liusheng2, Huang Huocheng3, Gao Chenglong2
1.Lü Tian Forestry Workstation, Conghua District, Guangzhou;2.Guangdong Academy of Forestry;3.Guangzhou Institute of Forestry and Landscape Architecture
Abstract:
Ophelimus bipolaris is a new invasive pest, belonging to the family Eulophidae in the order Hymenoptera. In 2021, the insect was documented for the first time in Guangzhou, China. To explore the control methods for O. bipolaris, this study evaluated the efficacy of five insecticides, including 40% chlorpyrifos EC, 5% imidacloprid EC, 1. 8% abamectin EC, 10% lambda-cyhalothrin EW, and 40% triazophos EC-under laboratory conditions. The results showed that five insecticides showed different degrees of control effect on the larvae of O. bipolaris. The corrected mortality rate of 40% triazophos EC at 40 g·L -1 was the highest reaching 84. 48% for the larvae. At the same mass volume concentration, 1. 8% abamectin EC showed the highest toxicity, with a median lethal concentration of 0. 02 g·L -1 against the larvae. Consequently, abamectin is recommended for the prevention and control of O. bipolaris in the forest.
Key words:  Ophelimus bipolaris  virulence test  chemical control  insecticides