致乏库蚊是我国南方城镇居室中常见的优势蚊种,它不仅骚扰人们休息,更重要的是传播疾病流行的主要媒介之一。因此,及时掌握该蚊种对一些常用化学杀虫剂的抗性现状和发展趋势,为今后积极开展除害灭病,科学合理地使用化学杀虫剂,研究防制对策,保障人民身体健康均有实际意义。由此,我们对诸暨市区和市郊的致乏库蚊进行了抗性测定,现将结果报告如下。材料与方法1．材料(1)药剂:敌敌畏1%、三氯杀虫酯5%、仲丁威5%、二氯苯醚菊酯]%、溴氰菊酯1%。以上五种杀虫剂母液均由中科院动物研究所提供。(2)溶剂:丙酮(分析纯)。(3)试虫来源:采集于诸暨市区和市郊的致乏库蚊成蚊,携回实验室给予吸血产卵,正常饲养至四龄期幼虫进行测试;同时用实验室不接触杀虫剂长期饲养的致乏库蚊四龄期幼虫(以下简称正常品系)作敏感度对照测试。2．方法 Culex pipiens is a common dominant species of mosquito in urban areas in southern China. It not only harasses people to rest, but more importantly, it is one of the main vectors to spread the epidemic. Therefore, we should grasp the current situation and development trend of the mosquito’s resistance to some commonly used chemical insecticides in a timely manner. We should vigorously carry out pest elimination and disease control, use chemical insecticides scientifically and rationally, study preventive measures and ensure people’s health Have real meaning As a result, we conducted a survey of Culex pipiens quinquefasciatus in the urban and suburban areas of Zhuji, and the results are reported below. Materials and methods 1. Materials: (1) Pharmacy: 1% dichlorvos, 5% chlorfenapyr, 5% methylephedrine, 2% Permethrin, 1% deltamethrin. The above five insecticide mother liquors are provided by the Institute of Zoology, Chinese Academy of Sciences. (2) Solvent: Acetone (analytical grade). (3) Source of test insects: Culex pipiens pallens collected from Zhuji urban area and suburbs were taken back to laboratory for blood spawning and normal feeding to fourth-instar larvae for testing. At the same time, laboratory insecticides Long-term feeding induced Culex pipiens fourth instar larvae (hereinafter referred to as normal strains) for sensitivity control test. 2. method