摘要
目的 了解浙江省淡色／致倦库蚊不同地理株对敌敌畏等5种常用杀虫剂的抗性动态，为指导灭蚊工作的深入开展提供科学依据。方法 采用浸渍法，测定Ⅳ龄期幼虫的半数致死浓度（LC50）。结果 浙江省各地淡色／致倦库蚊自然品系对仲丁威和三氯杀虫酯抗性均较低，属低抗水平（RR〈4）；对敌敌畏抗性最高的蚊种主要来自金华、衢州和舟山市，为中等抗性，抗性水平在5．2～6．6倍之间；金华和舟山地区的淡色／致倦库蚊对二氯苯醚菊酯和溴氰菊酯抗性较高，其抗性倍数分别为12．2和12．0倍，属高抗水平。结论 各地理株对5种常用杀虫剂均产生了不同程度的抗性，以二氯苯醚菊酯和溴氰菊酯为最高。
Objective The resistances of Culex pipiens pallens/quinquefasciatus to five insecticides, such as dichlorvos et al., were investigated so as to make the corresponding control strategy and the intelligent usage of mosquitoes insecticides in Zhejiang. Methods Immersion method of pesticide was used to assay the medium lethal concentration（ LC50 ） of the fourthinstar larvae. Results The resistances of C. pipiens pallens/quinquefasciatus to fenobucarb and plifenate were lower than other usual pesticides, the mosquitoes showed the lower resistance （RR〈 4）. The resistance of the mosquitoes from J inhua, Quzhou and Zhoushan to dichlorvos belonged to medium level, which RR ranged from 5.2 to 6.6. The mosquitoes from Jinhua and Zhoushan were more sensitive to permethrin and deltamethrin than those from other areas, the resistance times were 12.2 and 12.0, respectively. Conclusion The present experiment showed that C. pipiens paUens[quinquefasciatus had the relative resistance to five different pesticides, and especially had higher resistance to permethrin and deltamethrin.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
北大核心
2006年第4期277-279,共3页
Chinese Journal of Vector Biology and Control
关键词
淡色/致倦库蚊
杀虫剂
抗性
LC50
方差分析
Culex pipiens pallens/quinquefasciatus
Pesticide
Resistance
Lethal concentration
Medium lethal concent ration
