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Chinese Journal of Vector Biology and Control >
Investigation of population seasonality and insecticide resistance of Culex pipiens pallens (Diptera: Culicidae) in Zhejiang province, China
Received date: 2014-08-09
Online published: 2014-12-20
Objective To investigate the population density change of Culex pipiens pallens and its resistance to commonly used insecticides in Zhejiang province, China, and to provide a reference for mosquito control. Methods Light traps were used to determine the population density of Cx. pipiens pallens. The larva immersion method was used to determine the resistance of Cx. pipiens pallens to commonly used insecticides. Results The population density change of Cx. pipiens pallens showed a single-peak curve throughout the year, with a peak value in June, the highest average density among all habitats was found in rural households. Among different Cx. pipiens pallens populations, the resistance ratios to pyrethroids, organophosphorus, and carbamate were 1.31-20.43, 1.88-10.14, and 0.82-4.96, respectively. Most of field-collected mosquitoes showed resistance to pyrethroids at all sampling sites. Conclusion June is a key month of mosquito control in Zhejiang province, since the peak population density of adult Cx. pipiens pallens appears in June. Considering the prevalence of pyrethroids resistance among mosquitoes, comprehensive mosquito control should be promoted to delay the development of resistance to insecticides.
Key words： Culex pipiens pallens; Density; Insecticide resistance
GUO Song, HOU Juan, LU Ye, WANG Jin-na, GONG Zhen-yu . Investigation of population seasonality and insecticide resistance of Culex pipiens pallens (Diptera: Culicidae) in Zhejiang province, China[J]. Chinese Journal of Vector Biology and Control, 2014 , 25(6) : 534 -537 . DOI: 10.11853/j.issn.1003.4692.2014.06.013
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