论文部分内容阅读
目的 了解家蝇对常用杀虫剂抗性现状及防制对策研究。方法 建立抗性监测点 ,采用微量点滴法测定LD50 ( μg/只 ) ,提倡轮换或混合用药 ,控制家蝇抗性的发展。 结果 浙江省 11个市 (地 )监测点家蝇对溴氰菊酯、氯氰菊酯、高效氯氰菊酯、氯菊酯、胺菊酯、EBT、三氯杀虫酯和敌敌畏等 8种常用杀虫剂LD50 ( μg/只 )依次分别为0 .0 0 5～0 .0 488、0 .0 70～ 0 .3 10 7、0 .0 19～ 0 .13 81、0 .0 15 5～ 0 .12 5 8、0 .44 2～ 1.5 418、0 .115 0～ 0 .970 3、1.70 0～ 7.9978、0 .15 5 4～ 1.5 75 6。与 1981～ 1983年测定结果相比较 ,抗性提高依次分别为 7.14～ 69.71倍、8.43～ 3 7.43倍、7.60～5 5 .2 4倍、1.72～ 13 .98倍、1.89～ 6.5 9倍、0 .5 2～ 4.2 3倍、0 .5 5～ 2 .42倍、1.47～ 14 .86倍。结论 浙江省家蝇对溴氰菊酯、氯氰菊酯和高效氯氰菊酯已产生很高的抗性 ;氯菊酯、胺菊酯和敌敌畏抗性上升相对缓慢 ,趋稳定状态 ;EBT和三氯杀虫酯抗性不明显 ,趋敏感水平。应加强对家蝇抗性对策的研究 ,停用溴氰菊酯、氯氰菊酯和高效氯氰菊酯 ,抑制和延缓家蝇抗性的发展。
Objective To understand the current status of housefly resistance to commonly used insecticides and their control strategies. Methods The resistant surveillance sites were established. The LD50 (μg / body weight) was determined by microdilution method and the rotation or mixed drugs were advocated to control the development of housefly resistance. Results Eight domestic insecticides such as deltamethrin, cypermethrin, beta-cypermethrin, permethrin, tetramethrin, EBT, trichloro-insecticide and dichlorvos were monitored at 11 monitoring sites in Zhejiang Province μg / body) followed by 0 .0 0 ~ 0. 0 488 0 .0 70 ~ 0 .3 10 7,0 .0 19 ~ 0 .13 81,0 .0 15 5 ~ 0 .12 5 8 , 0 .44 2 ~ 1.5 418,0 .115 0 ~ 0 .970 3,1.70 0 ~ 7.9978,0 .15 5 4 ~ 1.5 75 6. Compared with the results from 1981 to 1983, the resistances were 7.14-69.71 fold, 8.43-3.33 fold, 7.60-5.5.24 fold, 1.72-1.38 fold, 1.89-65.9 fold, respectively .5 2 ~ 4.2 3 times, 0.55 ~ 2 .42 times, 1.47 ~ 14 .86 times. Conclusion The housefly in Zhejiang Province had high resistance to deltamethrin, cypermethrin and alpha-cypermethrin. The resistance of permethrin, tetramethrin and dichlorvos was relatively slow and stable. EBT and trichlorfenicarb Sex is not obvious, trend-sensitive. Should strengthen the study on the resistance of housefly, disable deltamethrin, cypermethrin and beta-cypermethrin, inhibit and delay the development of housefly resistance.