两种鼠兔四肢骨的比较研究

Comparative Study of Appendages Bones in two species of Ochotona

本文对比研究了２０只鼠兔骨骼标本。结果：两种鼠兔四肢骨经ｔ测验差异有显著性（１＝５．２８＞１．２２１＝ｔ０１１３Ｐ＜０．００１）．蒙古鼠兔腰带长是宽的１．７倍，后者为１．５倍。草原鼠兔荐髂关节加强，且坐骨弓平均指数（１３９．０２）大于蒙古鼠兔（９１．１２）．显示前者坐骨弓较深。

This study is based on the examination of 20 skeletons of ochotona the results shows that: The pelvis appendges in two species of ochotona exist sigificant difference with test(t=5.28>4.221=t0.00118 P<0.001)Ochotona pallasi length of the pelvis is one point seven(1.7)times as much as width of the pelvis while the latter is one point five(1.5).Strengthening of the sacroiliac articl1lation in ochotona daurica,The arcus ischiatic indes of ochototona daurica are more than ochofona Pallasi.The average index of ochotona daurica are 139.02.The average index are 91.02.In explanation of arcus ischial in ochotona daurica is deeply.