Molar wear rates in Sika deer during three population phases: increasing versus decline and post-decline phases
Molar wear rates in Sika deer during three population phases: increasing versus decline and post-decline phases
复制标题
梅花鹿在三个种群阶段的磨牙磨损率：增加阶段、减少阶段和减少后阶段
DOI：
10.3106/mammalstudy.24.17
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发表时间：
1999
期刊：
影响因子：
1
通讯作者：
T. Koizumi
中科院分区：
文献类型：
--
作者：
Hiroshi Takahashi;K. Kaji;T. Koizumi
在日本北海道中之岛，比较了西卡鹿（Cervus nippon）种群增长、衰退和衰退后3个阶段下第一磨牙（M1）的磨损率，以评价食物限制对鹿摄食生态的影响。牙齿标本也从人口收集在北海道东部，作为对照，那里的食物丰富。M1的最大长度和最大宽度在三个时期之间没有差异。对数转换的M1身高对年龄的线性回归系数在男性和女性之间没有差异，但在下降后阶段人群中显著小于增加阶段和对照人群。结果表明，M1磨损率随着食物减少而增加。
Wear rates of lower first molars (M1) in Sika deer, Cervus nippon, were compared among the increasing, declining and post-decline phases of population dynamics on Nakanoshima Island, Hokkaido, Japan, to evaluate the effects of food limitations on deer feeding ecology. Teeth specimens were collected also from a population in eastern Hokkaido, as a control, where foods were abundant. The maximum length and width of M1 were not different among the three phases. A linear regression coefficient for log-transformed M1 height against age was not different between males and females, but significantly smaller in the post-decline phase population than in the increasing phase and the control populations. The results suggest that M1 wear rates increased as food declined.