Age Estimation of African Lions Panthera leo by Ratio of Tooth Areas.
Age Estimation of African Lions Panthera leo by Ratio of Tooth Areas.
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DOI：
10.1371/journal.pone.0153648
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Cameriere R
中科院分区：
文献类型：
--
作者：
White PA;Ikanda D;Ferrante L;Chardonnet P;Mesochina P;Cameriere R
需要改进非洲狮 Panthera leo 的年龄估计，以解决许多紧迫的保护问题。在这里，我们提出了一个公式，用于根据 X 射线测量牙髓闭合程度或牙齿面积比率 (ROAR) 来估计狮子年龄，误差在已知年龄的六个月内。该公式源自对 3 至 13 岁的狮子进行的测量（已知确切年龄），可以解释 92% 的总方差。法医学中广泛使用的计算牙髓/牙齿面积比的方法在狮子衰老的研究中是新颖的。作为一种可量化的衡量标准，ROAR 为种群建模和与年龄相关的死亡率调查提供了改进的狮子年龄估计，并可以帮助国家和国际野生动物当局判断是否符合涉及年龄的监管措施。
Improved age estimation of African lions Panthera leo is needed to address a number of pressing conservation issues. Here we present a formula for estimating lion age to within six months of known age based on measuring the extent of pulp closure from X-rays, or Ratio Of tooth AReas (ROAR). Derived from measurements taken from lions aged 3–13 years for which exact ages were known, the formula explains 92% of the total variance. The method of calculating the pulp/tooth area ratio, which has been used extensively in forensic science, is novel in the study of lion aging. As a quantifiable measure, ROAR offers improved lion age estimates for population modeling and investigations of age-related mortality, and may assist national and international wildlife authorities in judging compliance with regulatory measures involving age.