湖北省家蝇抗药性调查及防制对策的研究

目的掌握湖北省不同地区家蝇对常用杀虫剂的抗性状态,并研究防制对策。方法微量点滴法。结果2005-2007年湖北省家蝇对敌敌畏的平均LD50分别为0．2256、0．1908和0．4428μg,只;2006年和2007年对高效氯氰菊酯的平均LD50分别为0．0841和0．1102μg/只;2005年和2007年对溴氰菊酯的平均LD50分别为0．0371和0．0825μg／只;2005年和2006年对胺菊酯的平均LD50分别为0．3952和0．2894μg／只;2005年和2007年对三氯杀虫酯的平均LD50分别为0．3264和0．3487μg/只。结论湖北省家蝇对有机磷类和拟除虫菊酯类杀虫剂在已产生较强抗性的基础上抗药性仍然在继续增加,而对20世纪90年代已停止使用的三氯杀虫酯的抗性处于敏感水平状态。提倡轮换或混合用药,控制家蝇抗性的发展。

A study on the insecticide resistance and management of Musca domestica in Hubei province

Objective To learn the resistance situation of Musca domestica from different areas in Hubei province to common insecticides and study its control measures. Methods Topical application was used in this study. Results The surveillance results indicated the average LD50 values of DDVP to housefly from different areas was 0.2256, 0.1908 and 0.4428 μg/ housefly from 2005 to 2007, respectively. The average LD50 of alpha-cypermethrin was 0.0841 and 0.1102 μg/housefly in 2006 and 2007, respectively. The average LD50 of dehamethrin was 0.0371 and 0.0825μg/housefly in 2005 and 2007, respectively. The average LDs0 of etramethrin in 2005 and 2006 was 0.3952 and 0.2894 μg/housefly, respectively. The average LD50 of aeetophenate in 2005 and 2007 was 0.3264 and 0. 3487 μg/housefly. Conclusion M.domestica had high resistance to organic phosphorus and pyrethrum insecticide in Hubei province. No obvious resistance against aeetophenate had been found. The mixed and rotation use of insecticides contributed to the control the resistance development of M.domestica.