摘要
用533只黑线姬鼠的标本记录和头骨,研究其种群年龄,共分幼年、亚成年、成年Ⅰ、成年Ⅱ、老年5个年龄组。各年龄组之间繁殖力存在着显著性差异,成年Ⅱ组是黑线姬鼠种群繁殖的主体。种群年龄组成在一年内存在着明显的季节更替关系。
The age structure of population were studied by 533 specimen of the striped field mouse (Apodemus agraiusa) which were traped in field mouse by mouth. According to the wear and tear of upper cheek teeth of the mouse. They were devided into five age groups which are infancy, sub-adult, adult-Ⅰ, adult-Ⅱ, and old age. It's observed that the reproduction capacity is significant difference among the age groups, and the adult-Ⅱ is main body of the population reproduction. It's obvious to seasonal variation of the age structure of the population throughout the year.
关键词
黑线姬鼠
种群
年龄
Striped field mouse
Population age structure
Seasonal variation
