北海口岸蜚蠊种群密度及季节消长的调查

本文报道了北海口岸蜚蠊种群密度及季节消长的情况,本次调查共发现蜚蠊有2科3属6种,以美洲大蠊为优势种,占89.63％。全年均有蜚蠊活动,蜚蠊的月平均密度为0.96％只/盒,以夏秋季较高,冬春季较低,7、8月份为高峰期。蜚蠊密度消长与气温的高低有密切的相关关系(r=0.858,tr=5.828,P<0.001)。

A Surver on Density and Seasonal Growth - Decline of Cockroches in Beihai Port

This paper reported the cockroach density and its seasonal growth ?decline in Beihai port during March 1997 to February 1998, there two families, three genera, six species were found in the survey, it showed that periplaneta ameri-cana is predominant strain, being 89.63% in the capture. The activities of cockroach in all the year in the district, cockroach average density monthly was 0.96/Box, the density is higher in summer and autumn, and is lower in winter and spring, the active peak is in July and August. There was a close correlation between the density of cockroach and temperature (r= 0.858, tr=5.828, P<0.00l).