摘要
Abstract
Objective The density and species composition of cockroaches in Suzhou,China as well as their seasonal fluctuations were investigated to provide a theoretical basis for their scientific control.Methods The sticking trap method was used to survey the population of cockroaches in the city.The chi-square test was used to compare the rates of adhesion to the sticky sheets,and the Kruskal-Wallis H test was used to compare the density of cockroaches.Results From 2019 to 2023,a total of 27 576 sticky sheet traps were placed in various areas of Suzhou.Of these,2 248 yielded positive captures of 15 963 cockroaches in total,with an adhesion rate of 8.15%and density of 0.58 insects per sheet.Blattella germanica predominated,accounting for 95.76%of the cockroach species in Suzhou.The adhesion rate and density of cockroaches decreased from 2019 to 2023,with the difference between the years being statistically significant(χ2=96.913,P<0.001).The highest adhesion rate and density(25.89%and 2.36 insects per sheet,respectively)were found in farm product markets.The adhesion rates differed significantly among different habitats(χ2=2 458.309,P<0.001).Cockroaches were active throughout the year,and the month of peak density differed in different years,with the overall peak density being 0.66 insects per sheet in November.Additionally,the seasonal fluctuation in cockroach density differed significantly among the different years(H=23.976,P<0.001).Conclusions The survey results showed that the adhesion rate and density of cockroaches in Suzhou have been decreasing annually.Cockroaches were active throughout the year,being mainly present in farm product markets.The seasonal fluctuations in cockroach density in different years differed significantly.Therefore,the characteristics of each habitat should be considered to effectively reduce the cockroach population density.关键词
蟑螂/密度/季节消长/监测Key words
Cockroaches/Density/Seasonal fluctuation/Surveillance分类
医药卫生
