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Title: Ecogeographical and phylogenetic effects on craniofacial variation in macaques.
Authors: Ito, Tsuyoshi  kyouindb  KAKEN_id  orcid (unconfirmed)
Nishimura, Takeshi  kyouindb  KAKEN_id  orcid (unconfirmed)
Takai, Masanaru  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 伊藤, 毅
Keywords: biogeography
adaptive convergence
Bergmann's rule
geometric morphometrics
Issue Date: 22-Jan-2014
Publisher: wiley
Journal title: American journal of physical anthropology
Volume: 154
Issue: 1
Start page: 27
End page: 41
Abstract: The widespread and complex ecogeographical diversity of macaques may have caused adaptive morphological convergence among four phylogenetic subgroups, making their phylogenetic relationships unclear. We used geometric morphometrics and multivariate analyses to test the null hypothesis that craniofacial morphology does not vary with ecogeographical and phylogenetic factors. As predicted by Bergmann's rule, size was larger for the fascicularis and sinica groups in colder environments. No clear size cline was observed in the silenus and sylvanus groups. An allometric pattern was observed across macaques, indicating that as size increases, rounded faces become more elongated. However, the elevation was differentiated within each of the former two groups and between the silenus and sylvanus groups, and the slope decreased in each of the two northern species of the fascicularis group. All allometric changes resulted in the similar situation of the face being more rounded in animals inhabiting colder zones and/or in animals having a larger body size than that predicted from the overarching allometric pattern. For non-allometric components, variations in prognathism were significantly correlated with dietary differences; variations in localized shape components in zygomatics and muzzles were significantly correlated with phylogenetic differences among the subgroups. The common allometric pattern was probably influenced directly or indirectly by climate-related factors, which are pressures favoring a more rounded face in colder environments and/or a more elongated face in warmer environments. Allometric dissociation could have occurred several times in Macaca even within a subgroup because of their wide latitudinal distributions, critically impairing the taxonomic utility of craniofacial elongation.
Rights: This is the peer reviewed version of the following article: Ito, T., Nishimura, T. and Takai, M. (2014), Ecogeographical and phylogenetic effects on craniofacial variation in macaques. Am. J. Phys. Anthropol., 154: 27–41, which has been published in final form at
この論文は著者最終稿です。内容が印刷版と異なることがありますので、引用の際には出版社版をご確認ご利用ください。This is the Accepted Author Manuscript. Please cite only the published version.
DOI(Published Version): 10.1002/ajpa.22469
PubMed ID: 24449333
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