关键词: 氨基甲酸酯, 灭多威, 家蝇, 毒力, 毒性

Abstract: The insecticidal activities of Methomyl to 4 different strains of house fly(Musca domestica)were strong,their LD₅₀ were 0.0395,0.2012,0.2351 and 0.1678(μg/♀)respectively.But no signifi cant cross resistance to Decamethrin-resistant fly.The toxicity of Methomyl to house fly was higher than that of Propoxur,Bassa,Isoprocaro and Carbaryl respectively.The acute oral toxicities of the purified product,the industrial product and the emulsifiable concentrate of Methomyl were high,and their acute dermal toxicities were low as well as its cumutlative factor K was over 5.3 with its safety coefficient 288.2.Ames test for Methomyl was negative.On the other hand,the acute oral toxicity of Methomyl oxime,the intermediate of Methomyl,was low.