江苏省疟疾媒介中华按蚊对杀虫剂的敏感性  

Sensitivity of Anopheles sinensis to insecticides in Jiangsu Province

作　　者：李菊林[1] 周华云[1] 曹俊[1] 朱国鼎[1] 王伟明[1] 顾亚萍[1] 刘耀宝[1] 曹园园[1] 张超[1] 高琪[1] 

机构地区：[1]江苏省寄生虫病防治研究所,无锡214064

出　　处：《中国血吸虫病防治杂志》2011年第3期296-300,共5页Chinese Journal of Schistosomiasis Control

基　　金：江苏省卫生厅重点科研项目(H200933);江苏省卫生厅科研基金(X200927)

摘　　要：目的了解江苏省疟疾媒介中华按蚊对溴氰菊酯、DDT和马拉硫磷的敏感性。方法从泗洪、扬中、宜兴3县(市)现场捕获野外中华按蚊成蚊并培养子1代成蚊,采用WHO推荐的接触筒强迫接触法,观察计算中华按蚊接触杀虫剂10、15、20、30、40、50、60min的击倒率和24h后死亡率。结果泗洪、扬中、宜兴3县(市)野外中华按蚊子1代接触0.05%溴氰菊酯60min的击倒率分别为28.57%、57.14%和52.38%,24h后死亡率分别为35.71%、57.14%和61.90%,对溴氰菊酯抗性均达到R级;接触4%DDT60min的击倒率分别为9.52%、2.38%和4.76%,24h后死亡率分别为47.62%、50%和40.48%,对DDT的抗性均达到R级;接触5%马拉硫磷60min后击倒率分别为11.90%、28.57%和28.13%,24h后死亡率分别为80.95%、85.71%和93.75%,对马拉硫磷的抗性为M级。宜兴市野外中华按蚊捕获后1、7、15d及其子1代成蚊,接触0.05%溴氰菊酯60min的击倒率分别为54.76%、76.19%、92.86%和52.38%,24h后死亡率分别为54.76%、76.19%、95.23%和61.90%,捕获后1d与子1代成蚊24h后的死亡率差异无统计学意义(χ2=0.44,P>0.05)。泗洪县中华按蚊子1代雌、雄成蚊接触0.05%溴氰菊酯60min的击倒率分别为28.57%和40.48%,24h后的死亡率为35.71%和42.86%,2种按蚊24h后的死亡率差异无统计学意义(χ2=0.45,P>0.05)。结论江苏省野外中华按蚊已对溴氰菊酯、DDT产生高度抗性,对马拉硫磷已产生初步抗性。在媒介防制时应采取综合治理措施,以防止抗性进一步升高。Objective To understand the sensitivity of Anopheles sinensis to deltamethrin, DDT and malathion in Jiangsu province. Methods The adult mosquitoes were captured from the fields of Sihong, Yangzhong and Yixing counties （cities） and cultured, and by using the method recommended by WHO, their first filial generations knocked down at 10, 15, 20, 30, 40, 50, and 60 min after exposure with insecticides aforementioned were counted, and the mortality of mosquitoes tested after 24 h was recorded. Results The knock down rates of mosquitoes, which were the first generation （F0） of Anopheles sinensis captured from the field of Sihong, Yangzhong, Yixing counties （cities） to 0.05% deltamethrin were 28.57%, 57.14%, 52.38%, respectively 60 min after the exposure; and the mortality rates 24 h-post-exposure were 35.71%, 57.14%, 61.90%, respectively. The resistance degree to deltamethrin was assessed as ＂R＂ level. The knock down rates of mosquitoes 60 min after the exposure to 4% DDT were 9.52%, 2.38%, 4.76%, respectively, and the mortality rates 24 h-post-exposure were 47.62%, 50.00%, 40.48%, respectively. The resistance degree to DDT was assessed as ＂R＂ level. The knock down rates of mosquitoes 60 min after the exposure to 5% malathion were 11.90%, 28.57%, 28.13%, respectively, and the mortality rates 24 h after the exposure were 80.95%, 85.71%, 93.75%, respectively. The resistance degree to malathion was assessed as level ＂M＂. The knock down rates of Anopheles sinensis captured in day 1, day 7, day 15 and the F1 from Yixing 60 min after the exposure to 0.05% deltamethrin were 54.76%, 76.19%, 92.86%, and 52.38%, respectively, and the mortality rates post-24 h were 54.76%, 76.19%, 95.23% and 61.90%, respectively. The difference of mortality post-24 h between the mosquitoes of 1 day post-captured and F1 was not statistically significant （P〉0.05）. The knock down rates 60 min after the exposure to 0.05% deltamethrin to the female and male F1 of Anopheles sinensis from Sihong were 28.57% and 40.48%, and t

关 键 词：中华按蚊 敏感性 溴氰菊酯 DDT 马拉硫磷 江苏省 

分 类 号：R384.1[医药卫生—医学寄生虫学]