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タイトル: | Phenotypic plasticity in the mandibular morphology of Japanese macaques: captive–wild comparison |
著者: | Kamaluddin, Siti Norsyuhada Tanaka, Mikiko Wakamori, Hikaru Nishimura, Takeshi ![]() ![]() Ito, Tsuyoshi ![]() ![]() ![]() |
著者名の別形: | 田中, 美希子 西村, 剛 伊藤, 毅 |
キーワード: | mandible macaques primates intraspecific variation phenotypic plasticity geometric morphometrics |
発行日: | 3-Jul-2019 |
出版者: | The Royal Society |
誌名: | Royal Society Open Science |
巻: | 6 |
号: | 7 |
論文番号: | 181382 |
抄録: | Despite the accumulating evidence suggesting the importance of phenotypic plasticity in diversification and adaptation, little is known about plastic variation in primate skulls. The present study evaluated the plastic variation of the mandible in Japanese macaques by comparing wild and captive specimens. The results showed that captive individuals are square-jawed with relatively longer tooth rows than wild individuals. We also found that this shape change resembles the sexual dimorphism, indicating that the mandibles of captive individuals are to some extent masculinized. By contrast, the mandible morphology was not clearly explained by ecogeographical factors. These findings suggest the possibility that perturbations in the social environment in captivity and resulting changes of androgenic hormones may have influenced the development of mandible shape. As the high plasticity of social properties is well known in wild primates, social environment may cause the inter- and intra-population diversity of skull morphology, even in the wild. The captive–wild morphological difference detected in this study, however, can also be possibly formed by other untested sources of variation (e.g. inter-population genetic variation), and therefore this hypothesis should be validated further. |
著作権等: | © 2019 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
URI: | http://hdl.handle.net/2433/243880 |
DOI(出版社版): | 10.1098/rsos.181382 |
PubMed ID: | 31417687 |
出現コレクション: | 学術雑誌掲載論文等 |
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