大连市城区蜚蠊种群密度及季节消长调查

Investagation on Cockroach Population Density and Seasonal Growth in Dalian City

目的掌握大连市城区蜚蠊种群密度及季节性消长动态变化规律。方法统一使用粘捕盒诱捕。结果大连市城区蜚蠊主要有德国小蠊、日本大蠊、黑胸大蠊3种,德国小蠊占97.51%;7～10月为蜚蠊孳生、活动频繁期,9月达高峰期,密度及侵害率分别为5.53只/张、25.30%。结论德国小蠊为优势种群,密度及侵害率高峰均出现于9月,应建立以综合防制为主的长效机制,达到有效控制蜚蠊孳生的目的。

Objective To grasp the cockroach species density and seasonal dynamic changes in Dalian City. Method From 2005 to 2008, the investigation lasted for 4 years in urban area and unified stick-trap was applied in the surveillance. Result There were three kinds of cockroach in Dalian City i. e. Blattella germanica, Periplaneta japronica and Periplaneta fuliginosa. Among them, Blattella germanica accounted for 97.51%. The period of the cockroach breeding and activity was from July to October. And the density and infestation rate were 5.53, 25.30% separately in September. Conclusion Blattella germanica is the dominant species in Dalian City. The density and infestation rate reach a peak in September. In order to control cockroach breeding purposes effectively, an integrated prevention long-term mechanism should be set up.