Growth of wild and laboratory born chimpanzees |
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Authors: | Tasuku Kimura Yuzuru Hamada |
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Institution: | (1) Department of Anthropology, Graduate School of Science, The University of Tokyo, Bunkyo-ku, 113 Tokyo, Japan;(2) Primate Research Institute, Kyoto University, 484 Kanrin, Inuyama, Aichi, Japan |
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Abstract: | The skeletal remains of a wild juvenile chimpanzee,Pan troglodytes verus, of known chronological age are measured and found to be smaller than laboratory born and fed juveniles of the same age.
Other wild born immature skeletal materials of all the three subspecies ofPan troglodytes, including both known and estimated chronological ages, are also smaller than laboratory born chimpanzees when comparisons
are made on corresponding age groups. Differences between wild and laboratory born chimpanzees are larger in the limb bones
than in the cranium. Limb bones of laboratory individuals grow earlier than those of wild ones regardless of subspecies. Small
limb bone size of wild chimpanzees is discussed in terms of life processes. |
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Keywords: | Free-ranging Laboratory fed P t verus P t troglodytes P t schweinfurthii Limb length Skull Development |
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