关键词: 白纹伊蚊, 抗药性, 抗性治理

Abstract: Objective To survey the resistance status of Aedes albopictus to several commonly used insecticides in Guangdong province,and learn how to prevent the occurrence and development of resistance. Methods Larvae of Ae.albopictus were collected in five cities located in the east,south,west,north and middle of Guangdong province,and were bred for 1 to 2 generations in the lab,then tested with WHO standard bioassay to calculate LC ₅₀ and resistance index. Results Ae.albopictus had low resistance to deltamethrin and cypermethrin,the resistant index was 3.10-4.20 against deltamethrin,and 2.23-2.91 against cypermethrin. Ae.albopictus was sensitivity to malathion,and the index is 1.05-1.91. Ae.albopictus from some cities also had developed resistance to other insecticides in different levels. Conclusion Resistance should be monitored regularly. Insecticides should be used scientifically and rationally to prevent and reduce the occurrence and development of resistance.