张家港口岸鼠形动物种群分布和季节消长调查

目的了解张家港口岸鼠形动物种群分布和季节消长情况，为防制提供科学依据。方法采用夹夜法。结果采取综合防制措施后，张家港口岸的鼠密度一直处于较低水平。此次调查，鼠形动物4年的平均密度为0．10％，以小家鼠为优势种，占48．42％，其次为褐家鼠和麝嗣，分别占25．79％和24．43％。鼠密度于4、9月呈现两个高峰，其中2004年鼠密度分别为0．35％和0．31％；于12、1月和6、7月呈现两个低谷，约低于0．05％。食堂和防护带密度较高，达到0．13％，仓库最低，为0．03％。结论张家港口岸鼠形动物以小家鼠为优势种，应在其繁殖高峰前后采取综合防制措施，降低鼠密度，预防传染病的发生。

A survey about population distribution and seasonal fluctuation of rat-shape animals at Zhangjiagang port

Objective To grasp the population distribution and seasonal fluctuation of rat-shape animals at Zhangjiagang port, and to provide the science evidence for its prevention and control. Methods Night-trapping method was used in this study. Results The rodent density was in a low level after taking integrated measure. In this survey, the average density of rat-shape animals from 2004 to 2007 was 0.10%. Mus musculus was the dominant specie, accounting for 48.42%. Rattus norvegicus and Crocidura lasiura accounted for 25.79% and 24.43%. Two peaks of density appeared in April and September, which were 0.35% and 0.31% in 2004, and two troughs appeared in December-January and June July, about under 0.05%. The density in mess and fencing was 0.13% while the density of warehouse was 0.03%. Conclusion M.musculus was the dominant specie at Zhangjiagang port, and the integrate control measures should be taken to reduce density of rat- shape animals to prevent the occurrence of infectious disease.