ISSN 1003-8280 CN 10-1522/R 中国疾病预防控制中心 主办
Chinese Journal of Vector Biology and Control >
Study on resistance of main vectors to commonly used insecticides in Jiaxing, China
Received date: 2019-02-14
Online published: 2019-06-20
Objective To investigate the resistance status of Blattella germanica, Aedes albopictus, and Musca domestica to commonly used insecticides in Jiaxing, and to provide a scientific basis for the development of reasonable and effective prevention and control measures. Methods The residual film was used to determine the median knockdown time (KT50) of propoxur, beta-cypermethrin, dimethyl dichloro-vinyl phosphate (DDVP), deltamethrin, and acephate against B. germanica. The WHO standard test kits were used to measure the mortality of Ae. albopictus at diagnostic doses of propoxur, beta- cypermethrin, deltamethrin, permethrin, and malathion. Micro-topical application was used to determine the median lethal doses (LD50) of propoxur, beta-cypermethrin, DDVP, deltamethrin, and permethrin against M. domestica. Results Blattella germanica showed moderate resistance to deltamethrin and DDVP, with resistance ratios of 8.21 and 5.33, respectively, showed low resistance to beta-cypermethrin, with a resistance ratio of 4.31, and was sensitive to propoxur and acephate, with resistance ratios of 1.58 and 1.05, respectively. The mortality rates of Ae. albopictus to beta-cypermethrin, deltamethrin, and permethrin were 100%, 100%, and 98.67%, respectively, indicating that Ae. albopictus was sensitive to these insecticides. However, its mortality rates to malathion and propoxur were 97.33% and 90.67%, respectively, suggesting possible resistance. Musca domestica demonstrated moderate resistance to DDVP (resistance ratio:10.47), low resistance to deltamethrin (8.22) and permethrin (8.13), and sensitivity to propoxur and beta-cypermethrin. Conclusion As shown from the resistance criteria, B. germanica, Ae. albopictus, and M. domestica in Jiaxing have different degrees of resistance to commonly used insecticides. Therefore, surveillance of insecticide resistance should be highlighted for rational use of insecticides.
QI Yun-peng, FU Xiao-fei, ZHA Yi-wei, XIANG Ze-lin, ZHOU Wan-ling, HOU Zhi-gang, GU Wei-ling . Study on resistance of main vectors to commonly used insecticides in Jiaxing, China[J]. Chinese Journal of Vector Biology and Control, 2019 , 30(3) : 337 -340 . DOI: 10.11853/j.issn.1003.8280.2019.03.026
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