Objective: To investigate the distribution and density of mosquito populations and the resistance of 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 mosquitoes was measured overnight using the light trapping technique. In addition, 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 mosquitoes were captured in six surveillance sites of Jiangsu Province in 2018 and 2019, and (49.11%), (28.38%), and (21.04%) were predominant species. The density of mosquitoes started to increase since early June, peaked in July and tended to be low in late October. mosquitoes captured from Hai'an was susceptible to malation, while those from Yandu District were moderately resistant to malation. mosquitoes from both Yandu and Hai'an were moderately resistant to proposur, and were resistant to DDT, beta cypermethrin and deltamethrin.
Conclusions: , and are predominant species in Jiangsu Province. is resistant to DT, beta cypermethrin and deltamethrin in central Jiangsu Province.
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| http://dx.doi.org/10.16250/j.32.1374.2020308 | DOI Listing |
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