关键词: 病媒生物, 种群构成, 密度, 监测

Abstract:

Objective　To determine species composition and densities of rodents, mosquitoes, flies, cockroaches and other vectors at three monitoring sites in Heilongjiang province from 2006 to 2008, providing scientific evidence for the development of vector control. Methods　Night traps and sticky traps were used to monitor rats and cockroaches throughout the years; lamp traps and cage traps were used for mosquitoes and flies from May to October each year. Results　The rat densities reached 2.02%, 2.17% and 2.36% from 2006 to 2008, respectively, the highest found in rural villages, and the dominant species being Rattus norvegicus. The densities of adult mosquitoes reached 18.03, 7.36 and 2.58 per lamp hour in the three years, respectively, the highest density found in livestock sheds, with Anopheles sinensis, Culex tritaeniorhynchus and Cx. pipiens pallens as the dominant species. The fly densities were 24.90, 14.91 and 8.69 per cage day, respectively, the highest found in farmers’ markets, the dominant species being Muscidae and Calliphoridae. The densities of Blattella germanica reached 3.05, 3.71 and 1.91 per sticky sheet, the encroachment rates being 23.35%, 26.05% and 23.75%, respectively, with the highest density found in farmers’ markets. Conclusion　The 3?year monitoring program revealed the species composition and population dynamics of major biological vectors in Heilongjiang. Further surveillance and monitoring would be necessary.

Key words: Disease vector, Species composition, Population density, Surveillance