5种常用杀虫剂对尖喙库蠓的毒性测定  

Toxicity of 5 insecticides to Culicoides oxystoma Kieffer(Diptera: Ceratopogonidae)

作　　者：陈敏[1] 王飞鹏[2] 黄响珠 黄恩炯[1] 

机构地区：[1]福建国际旅行卫生保健中心,福建福州350001 [2]福建农林大学教育部生物农药与化学生物学重点实验室,福建福州350002 [3]三明出入境检验检疫局,福建三明365000

出　　处：《福建农林大学学报（自然科学版）》2016年第3期247-251,共5页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建省科技重点项目(2014I0001);国家质检总局科技计划项目(2015IK036)

摘　　要：以野外采集的尖喙库蠓成虫为试验对象,通过滤纸接触法,测定了毒死蜱、敌敌畏、溴氰菊酯、高效氯氰菊酯和高氯·甲维盐等5种常用杀虫剂对尖喙库蠓的毒杀效果.结果表明:5种杀虫剂对蠓的毒性差异显著,毒力大小依次为溴氰菊酯>毒死蜱>高效氯氰菊酯>高氯·甲维盐>敌敌畏,试虫接触药剂1 h的LC50分别为0.060、0.588、1.741、99.670和600.496 mg·L-1;试虫经药剂处理1 h后在恢复筒观察24 h,其在各种药剂不同处理浓度下增加的死亡数不同;以溴氰菊酯为标准药剂,其相对毒力指数最大.Field-collected Culicoides oxystoma were exposed to different concentrations of commercial insecticides, including chlor-pyrifos, DDVP, dehamethyrin, beta-cypermethrin and beta-cypermethrin · emamectin benzoate via filter paper method, so that thetoxicity effects of different insecticides on C. oxystoma were determined. Results showed that toxicities varied significantly among insec-ticides. Biting midges were the most susceptible to dehamethyrin （0.060 mg · L^-1）, and followed by chlorpyrifos （0.588 mg · L^-1）,beta-cypermethrin （1.741 mg · L^-1, beta-cypermethrin · emamectin benzoate （99.670 mg · L^-1）, DDVP （600.496 mg · L^-1） ina descending order. After exposed to insecticides for 1 h, tested midges were transferred to recovery chamber and observed for anoth-er 24 hours, increased mortality within this period was different under the different concentrations of each insecticide. Relative toxic-ity index was maximal when using dehamethrin as standard reagent.

关 键 词：尖喙库蠓 杀虫剂 毒力 

分 类 号：Q96[生物学—昆虫学]