Body size, sexual dimorphism, and seasonal mass fluctuations in a larger sika deer subspecies, the Hokkaido sika deer (Cervus nippon yesoensis Heude, 1884)
Body size, sexual dimorphism, and seasonal mass fluctuations in a larger sika deer subspecies, the Hokkaido sika deer (Cervus nippon yesoensis Heude, 1884)
复制标题
较大梅花鹿亚种北海道梅花鹿的体型、性别二态性和季节性质量波动（Cervus nippon yesoensis Heude，1884）
DOI：
10.1139/z00-181
复制
发表时间：
2001
影响因子：
1.4
通讯作者：
N. Ohtaishi
中科院分区：
文献类型：
--
作者：
Masatsugu Suzuki;M. Onuma;M. Yokoyama;K. Kaji;Masami Yamanaka;N. Ohtaishi
对309只北海道西卡（Cervus nippon yesoensis Heude，1884）（公鹿115只，母鹿194只）的肩高、体长、后足长和总体质量进行了测量，并对雌雄二型性和季节性体质量波动进行了统计分析。冯·贝塔朗菲方程拟合得到的生长曲线。雄性的渐近肩高、体长和后足长分别为106.2、112.6和52.9 cm，雌性分别为94.8、103.9和49.4 cm。总体重显示出明显的季节性波动，成年雄性介于102.8和151.0 kg之间，成年雌性介于68.0和99.8 kg之间。肩高、体长、后足长和总质量的雄性/雌性比分别为1.12、1.08、1.07和1.51。这些结果表明，北海道西卡鹿是最大的亚种之一，至少在骨架大小。更大的身体和更长的后脚似乎是对北海道寒冷多雪环境的进化适应。
Measurements of shoulder height, body length, hind-foot length, and total body mass were collected from 309 Hokkaido sika deer (Cervus nippon yesoensis Heude, 1884) (115 males and 194 females) and analyzed statistically for sexual dimorphism and seasonal body mass fluctuations. The von Bertalanffy equation was fitted to the growth curves that resulted. Asymptotic shoulder height, body length, and hind-foot length were 106.2, 112.6, and 52.9 cm in males and 94.8, 103.9, and 49.4 cm in females, respectively. Total body mass showed distinct seasonal fluctuations, ranging between 102.8 and 151.0 kg in adult males and 68.0 and 99.8 kg in adult females. Male/female ratios in shoulder height, body length, hind-foot length, and total mass were 1.12, 1.08, 1.07, and 1.51, respectively. These results indicate that the Hokkaido sika deer is one of the largest subspecies, at least in skeleton size. A larger body and longer hind foot would seem to be evolutionary adaptations to Hokkaido's cold, snowy environment.