昆山市区饮食行业蟑螂种群变迁情况研究

Analysis on variety of the cockroach population in Kunsan catering trade

目的 了解昆山市区饮食行业蟑螂种群分布、变化情况。方法 用目测法和药激法 ,将 1991～1992年与 2 0 0 0～ 2 0 0 1年间调查结果资料进行比较。结果 1991～ 1992调查的黑胸大蠊、美洲大蠊和德国小蠊 ,构成比分别为 75 .5 6 % ,15 .5 6 % ,6 .6 7%。 2 0 0 0～ 2 0 0 1年分别为 12 .0 % ,4 .0 % ,80 0 %。结论 1991～ 1992年与 2 0 0 0～ 2 0 0 1年蟑螂构成比有明显差异。

Objective To study the data of distribution and variety of the cockroach population in Kunsan catering trade. Methods Observation,drug stimulation and comparing the investigation results of 1991～1992. Results The population density of Periplaneta fulginosa was 75.76% in 1991～1992 but 12.0% in 2000～2001.The population density of Blattella germanica was 6.67% in 1991～1992 but 80.0% in 2000～2001.The population density of Periplaneta Americana was 15.56% in 1991～1992 but 4.0% in 2000～2001. Conclusion There were remarkable changes of the population density of cockroaches in 1991～1992 and 2000～2001.