关键词: 家蝇, 不同生境, 抗药性, 防制

Abstract:

Objective　The current drug resistance of Musca domestica in different habitats in Nanchang was determined to  provide  the  basis  for  proper  administration  of  pesticides. Methods　The  micro?drop  method  was  applied. Results　The M. domestica in different habitats in Nanchang had developed varying degrees of tolerance or resistance to dichlorvos, propoxur, deltamethrin, beta?cypermethrin, beta?cyfluthrin and d?phenothrin. The LD50 of the M. domestica strains from the refuse transfer stations were 0.1664, 31.9389, 0.0348, 0.0498, 0.0059 and 0.2551 μg per fly, respectively; the LD50 of the M. domestica strains from the farmer’s markets were 0.1447, 40.7779, 0.0581, 0.0421, 0.0283 and 0.1722 μg per fly; those of the strains in catering industry were 0.1873, 51.7781, 0.0066, 0.0129, 0.0102 and 0.1990 μg per fly; and those of the strains from the residential areas were 0.2828, 39.8730, 0.0416, 0.0798, 0.0490 and 0.2342 μg per fly. Conclusion　The M. domestica in different habitats in Nanchang demonstrated intermediate to high resistance to dichlorvos but low tolerance to propoxur, as well as varying resistance to pyrethroid insecticides. Therefore, it is recommended to adopt integrated control measures and scientifically and properly administer pesticides in order to delay or avoid the occurrence and development of drug resistance in houseflies for effective control of M. domestica populations.

Key words: Musca domestica, Different habitats, Insecticide resistance, Control