Research on The Density Monitor of Cockroaches and Encroachment in Maoming City 2009

Objective To understand the density,encroachment rate and seasonal fluctuation of cockroaches in Maoming urban area during 2009,in order to supply a scientific base on controlling the cockroaches.Method Adhesive killing method which requires cockroach boxes is used to monitor and test the cockroaches.Results We have captured 379 cockroaches in total in all kinds of environment,among which we have 345 German cockroach and 34 Periplaneta americana.The average encroachment rate is 17.84% while the density is 0.53 cockroach per one box.Conclusions The constitution of cockroach species in Maoming urban area is only German cockroach and Periplaneta americana,between which the German cockroach,whose constituent ratio is 91.03%,is main.The environment types of German cockroach and Periplaneta americana mostly encroach are free market of agricultural products as well as catering trade.Therefore,we should further strengthen research on the control effect against German cockroach and Periplaneta americana,so as to safeguard people's health.