Objective To investigate the current status of resistance of Musca domestica to four commonly used insecticides in Bijie and Fuquan of Guizhou province, China, and to provide a basis for scientific prevention and control of M. domestica and rational selection of insecticides. Methods In August 2018, the net trap method was used to capture adult M. domestica at breeding places in Bijie and Fuquan, and the flies were brought back to insectary for identification and were fed to obtain the F1 generation. The micro-drip method was used to determine the resistance of adult female M. domestica, aged 3-5 days after eclosion, to four commonly used insecticides. SPSS 24.0 software was used to perform a statistical analysis and calculate median lethal dose (LD50). Results The LD50 values of M. domestica in Bijie against deltamethrin, beta-cypermethrin, permethrin, and DDVP were 0.141, 0.488, 0.288, and 0.627 μg/♀, respectively, with resistance ratios of 20.14, 28.71, 57.60, and 209.00 folds, respectively. The LD50 values of M. domestica in Fuquan against the above four insecticides were 0.180, 0.450, 0.464, and 0.808 μg/♀, respectively, with resistance ratios of 25.71, 26.47, 92.80, and 269.33 folds, respectively. Conclusion M. domestica in Bijie and Fuquan has developed resistance to the four commonly used insecticides, with a consistent level of resistance. M. domestica in both cities has the highest level of resistance to DDVP and high levels of resistance to the other three pyrethroid insecticides. Chemical insecticides should be effectively selected according to the insecticide resistance results so as to improve the efficacy and efficiency of the prevention and control of flies.
WANG Dan, CHEN Zhong-quan, LUO Can-mei, MI Jiao-ni, TIAN Zhen-zao, LIANG Wen-qin
. An investigation of insecticide resistance of Musca domestica in Bijie and Fuquan of Guizhou province, China, 2018[J]. Chinese Journal of Vector Biology and Control, 2019
, 30(6)
: 618
-620
.
DOI: 10.11853/j.issn.1003.8280.2019.06.005
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