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Age Estimation of African Lions Panthera leo by Ratio of Tooth Areas

Article scientifique 2016 Anglais

Résumé

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.

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White, P., Ikanda, D., Ferrante, L., Chardonnet, P., Mésochina, P., Cameriere, R. (2016). Age Estimation of African Lions Panthera leo by Ratio of Tooth Areas. https://doi.org/10.1371/journal.pone.0153648

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Auteur(s)

Paula A. White Dennis Ikanda Luigi Ferrante Philippe Chardonnet Pascal Mésochina Roberto Cameriere

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