主要林木害鼠年龄组划分与繁殖的研究

根据1987年4～9月在带岭及齐齐哈尔地区捕获的棕背平鼠、沼泽田鼠及东北鼢鼠的数量,依胴体重及繁殖率,划分为幼鼠、亚成体、成体Ⅰ、成体Ⅱ及老体5个年龄组。幼鼠不参与繁殖,亚成体与老体繁殖率分别为18％与2.6％,成体繁殖率为76～77％。性比有季节性变化,为鼠情监测提供了依据。

Research of Reproduction and Age Group of Bandicoot among Main Forest Tres

This work was carried out in Dailing and Qiqihar areas in 1987, from April to September when we caught many brown-backed voles (Clethrionomys rufocanus) ,reed voles (Microtus forlis) and Manchurian zokors(Myospalax psilurus). According to the number,the body weight without viscera and the reproductive rate,we divided the groups into the young,inferior adult,adult Ⅰ ,adult Ⅱ and old groups. The group didn't participate in the reproduction, the reproductive rate of inferior group were 18% and 2.6% respectively,and that of the adult group was 76-77%. The sex rate has seasonal variations. The result that we have obtained offers the basis for the inspection of bandicoot.