Cockroach Infestation in Some Hospitals in Trabzon, Turkey

Authors : Bilal KUTRUP

Pages : 73-77

View : 17 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The distribution and abundance of cockroaches were investigated in six hospitals in Trabzon. A total of 4756 insert ignore into journalissuearticles values(692 females, 652 males and 3412 nymphs); cockroaches were caught between 1st October 1999 and 30th January 2000. It was found that three cockroach species were present in hospitals. Of these, Blattella germanica was the predominant species with 98.25%, followed by Blatta orientalis insert ignore into journalissuearticles values(1.12%); and Periplaneta americana insert ignore into journalissuearticles values(0.63%);. Although the German cockroach, Blattella germanica, was found in all areas of the hospitals, Blatta orientalis and Periplaneta americana were only caught in kitchens. When comparing the population density of German cockroaches in different places chosen for this study, it was clear that the number of this cockroach per 10 m2 insert ignore into journalissuearticles values(102.23); and infestation rate insert ignore into journalissuearticles values(83.61%); were higher in kitchens than in other places. It was seen that the population density of this species in kitchens is significantly different from that in other places insert ignore into journalissuearticles values(one-way ANOVA: F = 54.17, P < 0.01);. Although several stages of B. germanica were observed in hospitals, nymphs showed the highest infestation rates insert ignore into journalissuearticles values(62.50-86.89%);. Most of the nymphs were immature insert ignore into journalissuearticles values(67.28-88.26%);. The infestation rate of immature nymphs was higher insert ignore into journalissuearticles values(88.26%); in kitchens than in other places, namely the patient rooms insert ignore into journalissuearticles values(67.28%);, nurse rooms insert ignore into journalissuearticles values(76.34%); and doctor rooms insert ignore into journalissuearticles values(80.04%);. In addition, some ecological parameters, such as humidity and temperature, were measured in the places studied to examine the relationship between the population density of B. germanica and these parameters. There seemed to be a very significant correlation between humidity and the population density of German cockroaches insert ignore into journalissuearticles values(R = 0.65, P < 0.01);, but not for temperature insert ignore into journalissuearticles values(R = -0.2, P > 0.01);. In conclusion, the population density of B. germanica increased over 45% humidity, but did not at lower humidity levels insert ignore into journalissuearticles values(39-45%);.
Keywords : Cockroaches, Population density, Humidity, Temperature, Hospital