Chinese Journal of Vector Biology and Control ›› 2022, Vol. 33 ›› Issue (3): 430-433.DOI: 10.11853/j.issn.1003.8280.2022.03.022

• Investigation • Previous Articles     Next Articles

Resistance of Anopheles sinensis to five insecticides in China-Myanmar border areas in Yingjiang county, Yunnan province, China

LIN Zu-rui1, LIN Ying-kun2, GUO Xiang-rui3, YANG Jie2, LI Shi-gang3, DONG Chao-liang2, CHEN Li-fei3, ZHOU Xian-hua3, GUAN Gui-qin3, SUN Xiao-dong1   

  1. 1. Dvision of Malaria Control, Yunnan Institute of Parasitic Diseases, Yunnan Provincial Center of Arborvirus Research, Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Training Base of International Scientific Exchange and Education in Tropical Diseases for South and Southeast Asia, Yunnan Institute of Parasitic Diseases Innovative Team of Key Techniques for Vector Borne Disease Control and Prevention (Developing), Pu'er, Yunnan 665000, China;
    2. Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention, Mangshi, Yunnan 678400, China;
    3. Yingjiang Center for Disease Control and Prevention, Yingjiang, Yunnan 679300, China
  • Received:2022-01-12 Online:2022-06-20 Published:2022-06-11
  • Supported by:
    National Natural Science Foundation of China (No. 81960374)

云南省盈江县中缅边境地区中华按蚊对5种杀虫剂的抗药性调查

林祖锐1, 蔺应坤2, 郭祥瑞3, 杨捷2, 李仕刚3, 董朝良2, 陈立飞3, 周先华3, 管贵琴3, 孙晓东1   

  1. 1. 云南省寄生虫病防治所疟疾防制科, 云南省虫媒病毒研究中心, 云南省虫媒传染病防控研究重点实验室, 面向南亚东南亚热带病国际科技人员交流与教育培训基地, 云南省寄生虫病防治所虫媒传染病防控关键技术省创新团队(培育), 云南 普洱 665000;
    2. 德宏傣族景颇族自治州疾病预防控制中心, 云南 芒市 678400;
    3. 盈江县疾病预防控制中心, 云南 盈江 679300
  • 通讯作者: 孙晓东,E-mail:sxdsxyab@163.com
  • 作者简介:林祖锐,男,主管医师,主要从事疟疾防控、媒介监测与控制工作,E-mail:964786374@qq.com
  • 基金资助:
    国家自然科学基金(81960374)

Abstract: Objective To investigate the resistance of adult Anopheles sinensis to insecticides in China-Myanmar border areas in Yingjiang county, Dehong Dai and Jingpo Autonomous Prefecture, Yunnan province, China, and to provide a basis for controlling the vectors for re-transmission of malaria after elimination.Methods One study site was selected at each of two townships on China-Myanmar border in Yingjiang county, and non-blood-fed female adult mosquitoes of An. sinensis were collected in cowsheds and brought back to the laboratory. World Health Organization (WHO) exposure tube assay was used to test the resistance of adult An. sinensis against insecticides on the next day. Each dose of insecticide was tested in triplicate for 60-min knockdown rate, half knockdown time, and 24-h corrected mortality. The Chi-square test was used to examined the 24-h corrected mortality between the two study sites. Results A total of 7 doses of 5 insecticides were tested. The 24-h corrected mortality of adult An. sinensis averaged from the two study sites for beta-cypermethrin (0.05%, 0.25%, and 0.5%), lambda-cyhalothrin (0.05%), deltamethrin (0.05%), malathion (5%), and propoxur (0.1%) was 38.62% (resistance), 53.07% (resistance), 61.22% (resistance), 42.03% (resistance), 42.86% (resistance), 96.37% (possible resistance), and 60.96% (resistance), respectively. There were significant differences in 24-h corrected mortality between the two study sites (both P<0.05). The average 24-h corrected mortality in Tongbiguan township was higher than that in Nongzhang township. Conclusion Adult An. sinensis in China-Myanmar border areas of Yingjiang county has generally developed resistance to pyrethroid insecticides, but is sensitive to carbamate and organophosphorus insecticides in some areas. Surveillance of insecticide resistance should be regularly carried out in Yingjiang county. Mixed insecticides, insecticide rotation, and physical mosquito control measures can be used in combination to delay the development of insecticide resistance.

Key words: Anopheles sinensis, Insecticides, Resistance, Yingjiang county, China-Myanmar border area

摘要: 目的 了解云南省德宏傣族景颇族自治州盈江县中国-缅甸(中缅)边境地区中华按蚊成蚊对杀虫剂的抗药性现状,为当地疟疾消除后防止再传播提供媒介控制依据。方法 在盈江县2个边境乡各选择1个调查点(牛棚),采集未吸血中华按蚊成蚊并带回实验室,于第2天采用世界卫生组织推荐的成蚊接触筒诊断剂量法测定其对杀虫剂的抗药性,每剂量杀虫剂重复测定3次,分别计算60 min击倒率、半数击倒时间和24 h校正死亡率,χ2检验比较2个调查点试虫24 h校正死亡率差异。结果 2020年9月,共测定5种杀虫剂7个剂量,盈江县中缅边境地区中华按蚊成蚊对高效氯氰菊酯(0.05%、0.25%和0.5%)、高效氯氟氰菊酯(0.05%)、溴氰菊酯(0.05%)、马拉硫磷(5%)和残杀威(0.1%)的平均24 h校正死亡率分别为38.62%(抗性)、53.07%(抗性)、61.22%(抗性)、42.03%(抗性)、42.86%(抗性)、96.37%(可疑抗性)和60.96%(抗性),铜壁关乡试虫24 h平均死亡率均高于弄璋镇,2个调查点试虫对每剂量杀虫剂24 h校正死亡率差异均有统计学意义(均P<0.05)。结论 盈江县中缅边境地区中华按蚊对拟除虫菊酯类杀虫剂普遍产生抗性,部分地区中华按蚊对氨基甲酸酯类和有机磷类杀虫剂敏感。该县应定期开展杀虫剂抗性监测,采用杀虫剂混剂、轮换使用杀虫剂和物理灭蚊等综合灭蚊措施,延缓杀虫剂抗性进一步发展。

关键词: 中华按蚊, 杀虫剂, 抗性, 盈江县, 中缅边境地区

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