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Does tooth wear influence ageing? A comparative study across large herbivores

We test whether the intensity of tooth wear influences the strength of actuarial senescence across species of large herbivores. We collected from the literature data on tooth wear in the wild (measured as the slope of the regression of log-transformed M1 crown height on age), longevity (measured as the age at which 90% of individuals are dead) and two metrics of actuarial senescence in captive populations (rate of senescence between 6 and 12 years of age and Gompertz rate of

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Tooth wear in captive giraffes (Giraffa camelopardalis): Mesowear analysis classifies free-ranging specimens as browsers but captive ones as grazers

Captive giraffe (Giraffa camelopardalis) mostly do not attain the longevity possible for this species and frequently have problems associated with low energy intake and fat storage mobilization. Abnormal tooth wear has been among the causes suggested as an underlying problem. This study utilizes a tooth wear scoring method (“mesowear”) primarily used in paleobiology. This scoring method was applied to museum specimens of free-ranging ( n=20) and captive (n=41) giraffes. The scoring system allows for the differentiation between attrition- (typical for

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