Objective To investigate the resistance in larvae and adults of Aedes albopictus to five commonly used insecticides in Jiangmen city, Guangdong province, China in 2016. Methods WHO recommended methods-bioassays were performed on the collected Ae. albopictus. With reference to the laboratory susceptible strain, insecticides resistance was tested with exposure tubes on adults and dipping method on larvae. Results The LC50 values of temephos, propoxur, deltamethrin, beta-cypermethrin, and permethrin for 7 populations of Ae. albopictus larvae were 0.001 8-0.005 7, 1.031 9-2.778 5, 0.003 8-0.015 0, 0.004 3-0.025 4, and 0.002 1-0.027 9 mg/L, respectively (resistant ratio 0.7-2.3, 1.5-3.9, 4.2-16.7, 3.3-19.5, and 0.4-5.0, respectively). Seven populations of adult mosquitoes can be considered susceptible or probable resistance to malathion, propoxur and permethrin. Three populations of adult Ae. albopictus (Jianghai district, Xinhui district and Heshan city) were resistant to deltamethrin (mortality 75.93%, 64.15%, and 78.69%). Two populations of adult Ae. albopictus (Pengjiang district and Enping city) were resistant to beta-cypermethrin (mortality 77.19% and 73.42%). Conclusion The larvae of Ae. albopictus in Jiangmen city are susceptible to temephos and have developed different levels of insecticide resistance to propoxur and pyrethroids. Adult mosquitoes showed remarkable resistance or probable resistance to pyrethroids.
OU Bo-wen, ZHANG Jin-miao, ZHU Yu-ping, HUANG Mu-chang, HUANG Xiao-jiang, HUANG Yue-zhi
. Resistance of Aedes albopictus to commonly used insecticides in Jiangmen city,Guangdong province,2016[J]. Chinese Journal of Vector Biology and Control, 2017
, 28(4)
: 386
-389
.
DOI: 10.11853/j.issn.1003.8280.2017.04.022
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