On change of susceptibility of houseflies to some pyrethroids after successive selection to organophosphorus resistant housefly colony (Dejima) with pyrethroids

Abstract

Change of susceptibility of a organophosphorus resistant housefly (Musca domestica Linne) colony collected at Dejima-cho in Ibaraki prefecture (Japan) to several organophosphorus and pyrethroid insecticides was studied during successive selection with tetramethrin, resmethrin or permethrin in the laboratory from Janury 1977 to March 1980. Selection was performed in the concentration which resulted in more than 80% mortality to the adult houseflies by topical application. Present results indicated that susceptibility of these houseflies to pyrethroids did not decrease during successive selection for 10 generations with tetramethrin, 20 generations with resmethrin, or 30 generations with permethrin, respectively.