关键词: 病媒生物, 密度监测, 种群动态

Abstract: Objective To analysis annual dynamics of vectors such as rats,mosquitoes,flies and cockroaches in Jiangsu province from 2002-2007 by studying the regularly monitoring data of vectors in Wuxi city,Nanjing city and Xuzhou city.Methods The night trapping and cockroach paste methods were used for the monitor of rats and cockroaches density.The men-hour and cage-trapping methods were conducted to monitor the density of mosquitoes and flies from April to November,respectively.Results Annual density dynamic of mosquitoes,flies and cockroaches was single-peak curve from 2002 to 2007 and the peak appeared in 2005 or 2006.The density of rats decreased year after year and the constituted ratio of the dominant mosquito Culex pipiens pallens tended to reduce.The constituted ratio of Aedes(Stegomyia) albopictus and Rattus norvegicus(Berkenhout) increased yearly and reached about 10% and 25% respectively in 2007.Blattella germanica(Linnaeus) was the dominant species and its constituted ratio reached 97% in 2007.According to the analysis data monthly of vectors from 2002 to 2007,the density of mosquito had two peaks,and the peak time was in July and September.The flies density had only one peak from June to September,which mainly centralized in September.The peak of cockroach density was from August to September.That of rat fluctuated greatly every month and its peak time was in March and August.Conclusion The risk of vector-borne disease might be worse than before because of the change of vector population and its structure. It should strengthen monitoring and control of vectors and vector-borne diseases in Jiangsu province.