Age-related tooth wear differs between forest and savanna primates.

Results Cross-sectional linear and quadratic regressions of PDE with age in mandrills and baboons for M1 and M2 teeth yielded highly significant positive relationships ( p <0.001 in all cases), although quadratic regressions were always more informative, following the Akaike information criterion (AIC) ( Table 1 ).

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We found no significant differences in tooth wear between wild and captive origin of the studied mandrills for both M1 and M2, although for M2 the relationship was close to significance ( p = 0.053) ( Table 3 ).

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