关键词: 病媒生物, 监测, 分析, 季节消长

Abstract:

Objective To determine the population density and dynamics of vectors in Baoshan district of Shanghai, providing the basis for epidemiological analysis of vector-borne diseases as well as vector control. Methods The rat density was monitored by night traps (using peanuts as baits), mosquito density by the labor hour method, fly density by cage traps and cockroach density by glue traps. Results From 2006 to 2008, 25 898 times of rat trap deployment was performed, resulting in 24 237 positive catches and 77 captured rats; the rodent density was 0.32%. With 5345 mosquitoes captured, the mosquito density was 9.28/labor-hour. The 540 fly-alluring cages had trapped 932 flies, and the fly density was 1.73/cage. A total of 6480 roach glue traps were placed and recovered, resulting in 448 positive traps and 3316 captives. The cockroach density was 0.51/trap, and the average infestation rate was 6.91%. Blattella germanica was the dominant species. Conclusion The focal targets for prevention and control in Baoshan district of Shanghai included Rattus norvegicus, Mus musculus, Culex pipiens pallens, Lucilia sericata, Musca domestica and B. germanica. To reduce the vector density, environment-centered integrated measures dependent on the breeding places, habitual traits and seasonal variation should be adopted.

Key words: Vector, Monitoring, Analysis, Seasonal fluctuation