关键词: 高原鼢鼠, 高原鼠兔, 骨骼, 非必需微量元素

Abstract: The contents and distributions of six unessential elements were analyzed in the whole bone , cranium , backbone , and leg bone of plateau zokor (Myospalax baileyi) and plateau pika ( Ochotona curzoniae) . These trace elements are Pb , Cd , As , Sb , Bi , and Hg. The results indicated that the contents of Pb , Cd , As , Bi and Hg in skeleton of plateau zokor are higher than that in skeleton of plateau pika with significant differences in Pb , Bi , and Hg. The contents of Hg and Cd between plateau zokor and plateau pika are significantly correlated while the contents of Sb and Bi are less correlated. In the skeletons of plateau zokor and plateau pika , the distributions of Hg , Pb , As , and Bi are mostly in the head bones , leg bones , backbones , and backbones , respectively. The contents of these six unessential trace elements in skeletons are related to not only to their ecological environments and food but also the cooperation and antagonism among these elements.

Key words: Plateau zokor (Myospalax baileyi), Plateau pika ( Ochotona curzoniae), Skeleton, Unessential trace elements