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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。
Objective To master the resistance status of house flies to common insecticides in different areas in Hubei Province and to study the control strategies. Method of micro-drip method. Results The average LD50 of house-keeping to dichlorvos was 0.2256,0.1908 and 0.4428μg / house-stay in Hubei province from 2005 to 2007 respectively. The mean LD50 of beta-cypermethrin in 2006 and 2007 were 0.0841 and 0.1102μg / house respectively. In 2005 and 2007 The average LD50 for deltamethrin was 0.0371 and 0.0825 μg / kg respectively; the average LD50 for tetramethrin was 0.3952 and 0.2894 μg / kg for 2005 and 2006 respectively; the LD50 for trichlorfenicarb for 2005 and 2007 The average LD50 was 0.3264 and 0.3487 μg / each. Conclusion The resistance of organophosphates and pyrethroid insecticides to housefly in Hubei Province has continued to increase on the basis of strong resistance. However, the use of trichlorfenicol, which has been discontinued in the 1990s, Resistance is at a sensitive level. Advocate rotation or mixed medication to control the development of housefly resistance.