摘要
目的了解武汉市致倦库蚊幼虫对5种杀虫剂的抗性状况,为科学使用杀虫剂提供依据。方法采用WHO提供的幼虫浸渍法,测定4龄期幼虫的半数致死浓度(LC50)。结果武汉市武昌、青山、江岸区致倦库蚊幼虫除对仲丁威较敏感(R/S<1)外,对氯氰菊酯、高效氯氰菊酯、溴氰菊酯和三氯杀虫酯均产生不同程度抗性。3个城区的致倦库蚊幼虫对氯氰菊酯的抗性倍数分别为59.3、27.3和64.0倍;对高效氯氰菊酯的抗性倍数分别为3.8、2.8和3.8倍;对三氯杀虫酯和溴氰菊酯的抗性倍数分别为5.5、4.4、6.1倍和6.7、9.9、6.7倍;对仲丁威的抗性倍数<1。结论在灭蚊工作中应采取综合性防制措施,科学合理使用杀虫剂。
Objective To investigate the resistance of Culex pipiens quinquefasciatus larve to five insecticides and provide evidence for scientific application of insecticides. Methods WHO- recommended Larva dipping method was used to test medium lethal concentration of the larva at their fourth instar in this test. Results The strains had developed different degrees of resistance to tested insecticides except fenobucarb （R/S〈1） from Wuchang, Qingshan and Jiangan districts, where the corresponding resistant coefficients to cypermethrin were 59.3, 27.3 and 64.0, to high effect cypermethrin 3.8, 2.8 and 3.8, to acetofenat 5.5, 4.4, 6.1, to dehamethrin 6.7, 9.9, 6.7, and to fenobucarb all less than 1. Conclusion It was necessary to apply integrated measures and use insecticides scientifically in controlling mosquitoes.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
2012年第5期477-478,共2页
Chinese Journal of Vector Biology and Control
关键词
致倦库蚊幼虫
抗药性
调查
Culex pipiens quinquefasciatus larve
Insecticide resistance
Investigation
