林麝幼体的换毛序和胎毛、夏毛、冬毛的形态

被毛是哺乳动物最主要的特征之一,有关动物换毛序与环境关系的研究,是动物生态学研究的一个重要方面。从1853年Browne开始研究毛发结构以来,人们对毛发的形态学、分类学和种属关系等方面的研究已开展了大量工作,特别是随着电镜技术的应用,这些方面的工作在逐渐深入(曹汉民等,19

Coat changes and hair morphology of musk deer(Moschus berezovskii) fawn

We describe the process of coat in musk deer fawns (Moschus berezovskii) based on observations of captive individuals, and light and scanning electron microscopy (SEM) of guard hair morphology. After birth, there are 2 complete molts in fawns from summer to the end of the year. The processes of summer and winter molting are similar, both beginning with the limbs and head and neck region, and then extending to the back and rump. Mean hair length of neonates was 26.5 mm , increasing to 37.5 mm and 48.7 mm, in summer and winter respectively. Mean hair width of neonates was 0.136 mm shortly after birth, increasing to 0.276 mm and 0.42 mm in summer and winter, respectively. All differences were significant (P< 0.001). Although the hairs had a similar medullar structure there was a large, irregular intercellular space within the medullae in winter hair. Length, width and hair structure of winter pelage were similar to that of adults. These results indicated that winter pelage of fawns had similar insulation characteristics to that of adults.