The survey on the cockroach infestation in markets in Wuhu City in 2019

TONG Fei; AN Zhou; WANG Fei; YE Qin; LI Yong; ZHANG Junmei; QIAN Mingfeng

doi:10.19821/j.1671-2781.2023.05.013

Abstract：Objective To understand the infestation status of cockroaches in the markets of Wuhu City and provide scientific basis for cockroach prevention and control in the markets.Methods The sticky-trap method was used to investigate cockroach infestation in different habitats of market places in retrieved Wuhu City in 2019.Results In 9 marketplaces of Wuhu City,1 153 cockroach houses were deployed,1 104 were covered,and 3 839 cockroaches were captured,belonging to 2 families,2 genera and 2 species,namely,German cockroach(3 320,86.5%)and black-breasted cockroach(519,13.5%);the average infestation rate was 28.0%,the average density was 3.5 cockroaches/tablet,and cockroaches were active throughout the year.The highest cockroach density(6.1 per sheet)and infestation rate(43.3%)were in September;the top five habitat areas in terms of cockroach density were:aquatic area(15.8 per sheet),meat area(7.0 per sheet),live poultry area(2.6 per sheet),vegetable area(2.5 per sheet),and pastry area(2.3 per sheet);the infestation rate of cockroaches in the temporary market was higher than that in the standardized market,and the difference was statistically significant(χ2=6.097,P＜0.05);there was a linear relationship between cockroach density and the average temperature of the previous month(r=0.840,P＜0.05)and a linear relationship between cockroach infestation rate and the average temperature of the previous month(r=0.965,P＜0.05).Conclusion The dominant population of cockroaches in the market in Wuhu City is German cockroach,and the infestation is most serious in summer and autumn.In the future,we should strengthen the prevention and control of key areas such as aquatic area,meat area,live poultry area,vegetable area and pastry area in the market,increase the construction and renovation of standardized markets,improve the indoor environment,reduce the cockroach density and control the cockroach infestation.