Estimation of African apes’ body size from postcranial dimensions |
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Authors: | Markku Niskanen Juho-Antti Junno |
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Institution: | (1) Archaeology, Faculty of Humanities, University of Oulu, P.O. Box 1000, 90014 Oulu, Finland;(2) Department of Anatomy and Cell Biology, Faculty of Medicine, University of Oulu, P.O. Box 5000, 90014 Oulu, Finland |
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Abstract: | We examine how African apes’ postcranial skeletal dimensions and their combinations are related to body size, as represented
by trunk volume, within sex-specific samples of a total of 39 central chimpanzees (Pan troglodytes troglodytes) and 34 western gorillas (Gorilla gorilla gorilla). We examine this relationship by determining the strength of the correlation between selected skeletal dimensions and trunk
volume. The findings indicate that sex should be taken into account when possible. Most two-predictor models perform better
than most single-predictor models. Interspecific regressions based on log-transformed variables and sex/species-specific regression
based on raw variables perform about equally well. |
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Keywords: | African apes Chimpanzees Gorillas Trunk volume Body-size estimation Postcranial size |
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