高山姬鼠胴体重长指标的变化规律

采用胴体重与体长的比值作为胴体重长指标KWL′。对2008－2010年贵州省大方县捕获的285只高山姬鼠(雌鼠138只,雄鼠147只)胴体重长指标进行分析表明,高山姬鼠胴体重长指标在1.38～3.32 g/cm之间,平均为(1.90±0.32) g/cm,雌雄鼠之间差异极显著。不同生境之间差异不显著。不同年龄组之间差异极显著,且随着种群年龄的增长,胴体重长指标不断增加。不同季节、不同月份之间差异显著, 胴体重长指标季节变化趋势为夏季>春季>秋季>冬季。胴体重长指标与种群繁殖密切相关,可作为预测种群数量变动的参考依据之一。

The Change law in Body weight/length without viscera index of Apodemus chevieri

We use the ratio between body weight without viscera and body length without viscera as the body weight/length without viscera index （K WL ＇ ）. We analyzed the body weight/length without viscera index of 285 samples of Apodemus chevieri （138 female, 147 male） which were captured in Dafang County, Guizhou province from 2008 to 2010. The body weight/length without viscera index were between 1.38 g/cm and 3.32 g/cm. The average is （1.90±0.32） g/cm. The results show that there is significant variation in the index between male and female and the variation in different environment is not significant. There is significant variation in the index among different age groups. The body weight/length without viscera index increased with the growth of population age. The body weight/length without viscera index varied significantly by season and the change trend is spring〉autumn〉summer〉winter. The body weight/length without viscera index is closely related with population reproduction. This can be used as reference to forecast the changes of population density.