【摘要】 目的 :掌握十堰城区家蝇对不同杀虫剂的抗药性状况及其变化 ,研究防制对策 ;方法 :将杀虫剂用丙酮稀释成不同浓度组 ,每组试虫 3 0只 ,测定 7个浓度 ,选用 5个浓度 ,用微量进样器点滴杀虫剂于试虫中胸背板上 (用第 2代体重约 18mg～ 2 0mg雌蝇为测试对象 ) ;结果 :连续 13年共测定 11种杀虫剂 ,家蝇对菊酯类杀虫剂最敏感 ;有机磷杀虫剂抗药性维持在一定水平 ,近年来呈上升趋势 ;六六六停用多年 ,家蝇已处于敏感状态 ;巴沙对家蝇半数致死量 (LD50 )最高为 5 3 45 2 7μg/只 ,家蝇已产生高抗药性 ;结论 :对蝇类防制应采取综合措施 ,以环境治理为主 ,合理使用杀虫剂 ,延缓蝇类抗药性的产生和发展 ,把蝇类的数量和危害控制在较低水平更多还原

【Abstract】 Objective:To observe resistance change of housefly to different insecticides in Shiyan city. Methods:Using acetone to dilute the insecticide into different concentrations, 30 houseflies a group, determine 7 kinds of concentration, select 5 kinds of concentration. Drip the insecticide of 1 mL on the housefly’s mesonotum (18 mg～20 mg female houseflies of the second generation were experimented). Results:11 kinds of insecticide were bioassayed in 13 years. Pyrethroids was most effective to houseflies. The resistance to orangic phosphonus insecticide kept stable. 666 has been prohibited for years. The LD 50s of Bassa against female houseflies was the highest, as much as 5.345 27 μg/insect. Conclusion:Comprehensive measures should be taken. The main aspects were surrounding management, using insecticide reasonably, reducing the houseflies resistance, controlling the quantity of housefly at a lower level.更多还原