关键词: 害鼠种群, 繁殖力, 黑线姬鼠, 大仓鼠

Abstract: In order to generate scientifically strategy on deratization, the paper analyzed the difference of population fecundity and its effect on population quantity between the two big species group of mouse, Apodemus agrarius and Cricetulus triton, in farm fields of Shunyi District in Beijing. During the years of 1994-2014, we investigated the mouse using clamping method during March to November (or January to December), settle 500 mouse traps in the monitoring points in the first third of each month. Specimen’s weights, body lengh, tail length, auricular height and hind leg length were measured, and their bodys were dissected to observe the progation. We analyzed the differences in fecundity between Apodemus agrarius and Cricetulus triton, results showed that Apodemus agrarius had more advantage in competition. Both Apodemus agrarius and Cricetulus had two propagation peak times each year and the main body of the propagulum were adult mice. Their offspring occupied 94.5% and 95.6% among all the infant mice, respectively. Both the propagation and main propagation of Apodemus agrarius were one month longer than those of Cricetulus triton. During the main propagation period, the proportion of male and female adult mice was higher than that of Cricetulus triton. The number of production was 1.7 times as many as that of Cricetulus triton. The average number of fetal mice was less than that of Cricetulus triton. These data indicated that the propagation ability of Apodemus agrarius were stronger than that of Cricetulus triton and had more advantage in competition.

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