摘要
本文应用主成份分析法研究了棕色田鼠的体重、体长、胴体重、尾长、后足长、颅全长和颧宽等７项生长指标及其在鼠体生长和年龄评价上的代表性。结果表明，头骨增长是鼠体生长最具主导地位的指标，后足长和胴体重次之，体重与鼠体生长的相关性较低，体长在７项指标中最不具代表性。考虑到精确性和实用性。
The paper deals with 7 growth indices of Mandarin vole (Microtus mandarinus Milne-Edwards) by the principal component analysis, such as weight, body length, body weight excluding viscera, tail length, length of hint foot, greatest length of skull and zygomatic width The results are as follows:the growth indices of skull are the leading facters in all indices with the highest contribution rates (9924%, 9916%) for the correlation matrix Length of hint foot and body weight exduding viscera are in the second level The correlativity of weight and the growth of the vole is lower, as well as body length which contribution rate is negative value Based upon the necessity of precision and operation, the authors suggest that weight excluding viscera is the best indicator in the age determination of Mandarin vole
基金
国家"八五"科技攻关项目
关键词
棕色田鼠
主成份分析
生长指标
年龄指标
Mandarin vole (Microtus mandarinus Milne-Edwards), Principal component analysis, Growth indicator, Age indicator
