Investigation and research on the density of cockroaches and disoperation in Xinyang City

Objective To understand the type,density and seasonal fluctuation of cockroach in Xinyang City and provide scientific basis for the elimination of cockroach.Method Sticky traps method.Results We had captured 1 328 cockroaches in all kinds of environments,among which 1 193 were blattella germanica and 135 were periplaneta americana.The average disoperation rate was 7.36%,and the density was 0.65 cockroach per piece of paper.Conclusions Blattella germanica was the predominant species,and was active in summer and autumn.There were high density of cockroaches in hotels and restaurants,therefore,this units should strengthen the monitor and control of cockroach.