Chinese Journal of Vector Biology and Control >
Resistance of Aedes albopictus to insecticides in the late stage of emergency control of dengue fever of Guangdong province in 2014
Received date: 2016-10-27
Online published: 2017-04-20
Supported by
Supported by the Science and Technology Project of Guangdong Province(No. 2013A020229006)
Objective To investigate the resistance status of Aedes albopictus to used insecticides in the late stage of dengue fever emergency control of Guangdong province in 2014, and learn how to prevent the development of resistance. Methods From the end of October to the beginning of November 2014, larve of Ae. albopictus were collected in epidemic regions in Haizhu and Baiyun district of Guangzhou city, Chancheng and Nanhai district of Foshan city, Chaoyang district of Shantou city, Chao'an district of Chaozhou and Rongcheng district of Jieyang city, and were reared about 1 to 2 generations in the lab, then were tested along with the susceptible larvae according to the methods of national standard “Test Methods of mosquito resistance to insecticides-bioassay methods”(GB/T 26347-2010) to calculate LC50 and resistance index. Results Aedes albopictus of all tested regions had low resistance to temephos and propoxur, the resistant index was 4.92-8.33 and 2.35-6.23 fold respectively. The resistantce to permethrin, beta cypermethrin, deltamethrin resistance were 3.53-31.29 fold, 8.35-38.69 fold, and 2.63-37.04 fold respectively. Of pyrethroid insecticides, Guangzhou city have reached the high level resistance mostly, Foshan city, Chaozhou city mostly low level of resistance, Jieyang city for low level of resistance, Shantou city mostly above the moderate level of resistance against cypermethrin. Aedes albopictus from some cities also have developed resistance to other insecticides in different levels. Conclusion Resistance of Ae. albopictus in the dengue epidemic cities in Guangdong increased very quick to the used insecticides. The control of Ae. albopictus should adhere to the principle of sustainable and integrated management to prevent or delay the development of resistance.
Key words: Aedes albopictus; Resistance; Prevention measures
DUAN Jin-hua, CAI Song-wu, WU Jun, YIN Wei-xiong, DENG Hui, ZOU Qin, LIN Li-feng . Resistance of Aedes albopictus to insecticides in the late stage of emergency control of dengue fever of Guangdong province in 2014[J]. Chinese Journal of Vector Biology and Control, 2017 , 28(2) : 141 -143 . DOI: 10.11853/j.issn.1003.8280.2017.02.011
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