关键词: 蚊类, 调查分析, 口岸

Abstract:

Objective To investigate and analyze the species, density and seasonal fluctuation of mosquitoes as well as the main mosquito-borne pathogens at Zhejiang port in an effort to provide a scientific basis for the development of effective measures for the control and prevention of the insects and mosquito-borne diseases. Methods Mosquitoes captured by mosquito collection devices were identified and classified. Fluorescence quantitative PCR method was used to detect pathogens carried by mosquitoes, including dengue virus, Japanese encephalitis virus(JEV), West Nile virus(WNV), malaria parasites and other pathogens. Results The mosquitoes captured at Zhejiang port belonged to one family, five genera and twelve species. Culex pipiens pallens or Cx. pipiens quinquefasciatus were found to be dominant species, accounting for 57.87% of the total mosquitoes, followed by Anopheles sinensis, constituting 23.75%. The average density was 0.38/(light·hour) with its peak activity being from June to August. The test Results of dengue virus, JEV, WNV and malaria parasites and other pathogens were negative. Conclusion The dominant species at Zhejiang port are consistent with the data collected locally, with different features seen at each port. There is a potential for outbreak of imported malaria at Zhejiang port, but little possibility of mosquitoes being infected with dengue virus and other pathogens is seen. The lower density of mosquitoes at Taizhou and Shengsi ports may be associated with the special environment at Taizhou port and the endemic island climate at Shengsi port. Mosquito density at the airports is significantly higher than that at the harbor, which is probably related to the unique environment and higher population density there.

Key words: Mosquito, Investigation and analysis, Port