Three-dimensional craniofacial variation and occlusal wear severity among inhabitants of Hokkaido: comparisons of Okhotsk culture people and the Ainu
スポンサーリンク
概要
- 論文の詳細を見る
Hokkaido is an intriguing region for studies of population history in Japan because of its geographical position both at the periphery in the Japanese archipelago and at the gateway to the northeastern Eurasian continent. This paper focuses on the biological relationship between two populations, Okhotsk culture people and Ainu, and investigates craniofacial variation and dental wear severity between and within the populations. Fifty-six anatomical landmarks were digitized in order to capture craniofacial shape and size components, and occlusal wear scores on the maxillary dentition were recorded as a proxy for the degree of masticatory stress. Population differences are clear in the craniofacial form: the Okhotsk skull is characterized by a high and broad face but a relatively smaller palate, high and anteriorly protruding zygoma as well as mediosuperiorly positioned temporal muscle origins, large infratemporal and mandibular fossae. However, this morphological shift is not proportional to that of the east–west regional difference within the Ainu males, each of which is detected along distinct and mutually independent principal components. Dental wear is stronger in Okhotsk than in Ainu although without any regional difference in the respective sample. Moderate association is found between the dental wear scores and the craniofacial shape components only in the Okhotsk males, suggesting that they might have suffered from a substantial amount of functional demands. These results do not reject, but suggest modifications of, a previous simple model of genetic contribution from Okhotsk culture people to the formation of the Ainu regional variation. The formation process of the Ainu remains to be studied further in both biological and cultural contexts.
著者
-
Kondo Osamu
Department Of Anatomy Sapporo Medical College
-
FUKUMOTO IKUYA
Department of Biological Sciences, Division of Anthropology, Graduate School of Science, The Univers
関連論文
- Three-dimensional craniofacial variation and occlusal wear severity among inhabitants of Hokkaido: comparisons of Okhotsk culture people and the Ainu
- -115- CHANGES OF CARDIAC PERFORMANCE BEFORE AND AFTER BLALOCK-TAUSSIG SHUNT IN TETRALOGY OF FALLOT : Congenital Heart Disease, Kawasaki Disease : FREE COMMUNICATIONS(I) : PROCEEDINGS OF THE 51th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIET
- Craniometric divergence history of the Japanese populations
- High Field Magnetism of CuO
- Production of Peroxidase with Horseradish Hairy Root Cells in a Two Step Culture System
- The Neanderthal Remains from Dederiyeh Cave, Syria--Interim Report
- Flatness of Facial Skeletons of Ryukyuans
- Unique biological affinity of the hanging coffin people in ancient China based on craniometry of two skulls from Yunnan province
- Ainu and Ryukyuan Cranial Nonmetric Variation : Evidence which Disputes the Ainu-Ryukyu Common Origin Theory
- Fed-Batch Culture of Hairy Root Using Fructose as a Carbon Source
- Human Cranial Variations Based on Different Sets of Measurement Variables
- Morphometric Data on the Skulls of Ubayama Shell-mounds
- Craniometric divergence history of the Japanese populations
- Three-dimensional craniofacial variation and occlusal wear severity among inhabitants of Hokkaido : comparisons of Okhotsk culture people and the Ainu
- The thermal unimolecular decomposition of methyl chloride behind shock waves.
- The thermal gas-phase decomposition of vinyl bromide.
- Kinetic study of the thermal decomposition of isocyanic acid in shock waves.