关键词: 家鼠密度, 相关因素

Abstract: In Doudian.the population densities of commensal rodents were significantly different among the environments as follows. the storied building district 9. 84%,one-storey house district 17.05%,the special environments 60.53%.The population densities of Rattus norvegicus in the three environments were 0%,2.46%, 52.63%.respectively.The population densities of Mus musculus were not so different in the three environments.Rattus norvegicus was the dominant pest in the special environment.But Mus musculus in the residential quarter. In the latter environment,the population density of rodents depended on the food abundance and on the rodent-proof level in different kinds of rooms.Pet cats could influence the commensal rodents in some way,but they could not control the pest rodents.The hygiene level had a great influence on the population density of commensal rodents.especially on that of Rattus norvegicus.As the residential houses are Changing from one-storey house to storied building and the hygiene level are going better,the population density of rodents and the rat ratio in rodent composition are decreasing.But it is quite the,contrary in the special environment.