Surveillance of Culex mosquitoes in Jiangsu Province from 2018 to 2019
10.16250/j.32.1374.2020308
- VernacularTitle:2018—2019年江苏省库蚊监测结果分析
- Author:
Ju-Lin LI
1
;
Jian-Xia TANG
1
;
Jing-Yao WU
1
;
Meng-Meng YANG
1
;
Cheng LIANG
1
;
Mei-Hua ZHANG
1
;
Ya-Shu LI
1
;
Guan-Xi WANG
1
;
Hua-Yun ZHOU
1
;
Guo-Ding ZHU
1
;
Jun CAO
1
Author Information
1. WHO Collaborating Center for Research and Training on Malaria Elimination; Key Laboratory of National Health Commission on Parasitic Disease Control and Prevention; Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology; Jiangsu Institute of Parasitic Diseases, Wuxi 214064, China
- Publication Type:Journal Article
- Keywords:
Culex mosquitoes;
Population surveillance;
Insecticide resistance;
Jiangsu Province
- From:
Chinese Journal of Schistosomiasis Control
2021;33(5):510-512
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the distribution and density of Culex mosquito populations and the resistance of Culex pipiens pallens to insecticides in Jiangsu Province in 2018 and 2019. Methods During the period from June to October in 2018 and 2019, six counties (districts, cities) were sampled in southern, northern and central Jiangsu Province as surveillance sites. The density of Culex mosquitoes was measured overnight using the light trapping technique. In addition, Culex pipiens pallens mosquitoes were collected from Hai’an of Nantong City and Yandu District of Yancheng City, central Jiangsu Province, and the sensitivity of female first filial generations to dichlorodiphenyltrichloroethane (DDT), malation, proposur, beta cypermethrin and deltamethrin was tested using the standard WHO insecticide susceptibility test assay. Results A total of 104 423 Culex mosquitoes were captured in six surveillance sites of Jiangsu Province in 2018 and 2019, and Culex quinquefasciatus (49.11%), Culex pipiens pallens (28.38%), and Culex tritaeniorhynchus (21.04%) were predominant species. The density of Culex mosquitoes started to increase since early June, peaked in July and tended to be low in late October. Culex pipiens pallens mosquitoes captured from Hai’an was susceptible to malation, while those from Yandu District were moderately resistant to malation. Culex pipiens pallens mosquitoes from both Yandu and Hai’an were moderately resistant to proposur, and were resistant to DDT, beta cypermethrin and deltamethrin. Conclusions Culex quinquefasciatus, Culex pipiens pallens and Culex tritaeniorhynchus are predominant Culex species in Jiangsu Province. Culex pipiens pallens is resistant to DT, beta cypermethrin and deltamethrin in central Jiangsu Province.
