苏州市家蝇对杀虫剂抗性的研究与对策

STUDIESON RESISTANCE OF HOUSEFLY TO INSECTICIDE AND ITSCOUNTERMEASURE IN SUZHOU

目的 :为制订有效的家蝇防制对策提供科学依据 ,延缓抗药性的发展速度 ,延长杀虫剂的使用时间。方法 :用微量点滴法测定家蝇对有机磷、拟除虫菊酯类药物抗性程度。结果 :经测定证明 ,苏州市区及所辖 3个县级市对敌敌畏产生高度抗性 (高抗 ) ;对氯氰菊酯产生了中度抗性 (中抗 ) ;苏州市区及吴江市对二氯苯醚菊酯产生了高度抗性 ;太仓、昆山市对二氯苯醚菊酯产生中度抗性。结论 :苏州地区家蝇对有机磷、拟除虫菊酯已产生不同程度抗性水平 ,建议在该地区暂停使用上述杀虫剂。

AIM:To provide scientific basis for formulating effective countermeasures to control Musca domestica and delaying the development of resistance of insecticides.METHODS:The degree of resistance of Musca domestica to organophosphorus and pyrethroid insecticide was determined by micro- drop method.RESUL TS:The houseflies in Suzhou City and its three ju- risdictions showed high resistance to DDVP and mid- resistance to cypermethrin.In Suzhou city and Wujiang,the houseflies showed high resistance to permethrin,while the houseflies showed mid- resistance in Taicang and Kunshan.CONCL USION:The houseflies exhibited different degrees of resistance to organophosphorus and pyrethroid in Suzhou.