摘要
目的调查广西北海市致倦库蚊对5种杀虫剂的抗性水平,为化学杀虫剂灭蚊工作提供科学依据。方法采用浸渍法测定Ⅳ龄期幼虫的半数致死浓度(LC50)。结果现场品系的致倦库蚊对敌敌畏、三氯杀虫酯、残杀威、高效氯氰菊酯、溴氰菊酯的抗性倍数依次为6.14、0.07、1.54、0.52、5.00。结论北海市致倦库蚊对敌敌畏、溴氰菊酯已产生一定程度的抗性。
Objective To investigate the resistance level of Culex quinquefasciatus to 5 pesticides in Beihai city,and provide scientific basis for chemistry kill of mosquitoes.Method Immersion method of pesticide used to assay the medium lethal concentration（LC50） of the fourth-instar larvae.Results The resistance ratio of Culex quinquefasciatus in field species to dichlorvos,plife nate,propoxur,beta-cypermethrin and deltamethrin were 6.14,0.07,1.54,0.52,and 5.00 respectively.Conclusions The present study showed that Culex quinquefasciatus in Beihai city had high resistance level to dichlorvos and deltamethrin.
出处
《医学动物防制》
2011年第4期366-366,368,共2页
Journal of Medical Pest Control
关键词
致倦库蚊
杀虫剂
抗性
LC50
Culex quinquefasciatus
Pesticides
Resistance level
LC50
