The Influence of Age and Sex on Measures of Body Size in Captive Chimpanzees (Pan troglodytes) Cared for in African Wildlife Sanctuaries and Zoological Collections
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Body mass and crown-rump length were obtained from 150 male and 148 female (aged 1 - 38 years) African sanctuary chimpanzees. Sex-specific piecewise linear regressions were performed to estimate growth rates and age at maturation. Body mass regressions were compared to those of 454 male and 623 female chimpanzees (aged 1 - 40 years) acquired from a centralised zoological database. A literature search of peer-reviewed publications was conducted to identify body mass data of research facility populations, which were presented for comparison.