半散养麋鹿角的特征及其脱落生境选择

The Milu (Elaphurus Davidianus) Antler’Character and the Habitats Choice for Casting

对麋鹿角的形状、定形模式、阶段性生发趋势、脱落时间及其脱落时生境选择进行探讨.角的特征分析表明:麋鹿角主杆分枝复杂,后枝生有小枝(0～4),各种年龄阶段麋鹿角的动态定形模式:独角(2YEAR)→二杈(3YEAR)→三杈(4YEAR)→四杈(≥5YEAR)→五杈,并且角萌发的高峰期为独角→二杈期,然后趋向于1.角的脱落时间分布和生境选择的结果说明:雄性麋鹿年龄越大角的脱落趋向越早(P<0.01),脱落的角分布于麋鹿正常活动范围内,其主要生境选择冬季人工补饲点、树林、草丛、光裸地、水塘等,贡献率分别为:40.39%、30.77%、21.15%、4.81%、2.88%.

The Milu’s antler is special in shape. The main part separate complexly and the posterior have some little branches (0~4). The antler’s forming pattern is: the single antler (2-year)→ the 2-branch antler (3-year) → the 3-branch antler (4-year)→the 4-branch antler (5-year) →→→ the 5-branch antler (?). The antler’s growing summit is in the period: the single antler → the 2-branch antler. The older, the earlier the hard antler cast (P<0.01). 40.39% of the hard antler cast when fighting for foods, and the rest habitat are the woods (30.77%),the hassock (21.15%),the naked ground(4.81%)and the ponds (2.88%).