关键词: 大仓鼠, 年龄指标, 主分量分析

Abstract: The authors make an assessment to 10 age indices of greater Long-tailed hamster(Cricetutus triton) by use of principal component analysis．All analyzed indices arcordinated on the first principal component axis whose contribution fates are 62.22% to male correlation matrix and 58.82% to female one．The result shows:
1．Body weight excluding viscera is the most present1e age indicator of greater long--tiled hamster．
2．Among the practical ones including body weight，body length，tail length and full body length，body weight is the best age indicator for male and body length for female．Because the projection of body weight is justlittle smaller than that of body length in female，the authors suggest that body weight may be used as age indicator of both male and female in rough division of age groups．
3．Dry weight of the eye lenses is not a suitable age indicator for greater long-tailed hamster because the eye lens is so light that the difference between two age groups adjacent to each other can not be reflected on s balance wohse sensitivity is more than 0.1mg．

Key words: Greater long-tailed hamster, Age indicator, Principal component analysis