Affinities of the Philippine Negritos as Viewed from Dental Characters: A Preliminary Report
Affinities of the Philippine Negritos as Viewed from Dental Characters: A Preliminary Report
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从牙齿特征看菲律宾内格里托人的亲缘关系：初步报告
DOI：
10.1537/ase1911.97.327
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
T. Hanihara
中科院分区：
文献类型：
--
作者：
T. Hanihara
本文对菲律宾吕宋岛中西部的黑人部落之一Aeta的牙齿特征与日本人、阿伊努人、PimaIndians、澳大利亚土著人、菲律宾人、美国高加索人和美国黑人的牙齿特征进行了比较。尼格里托斯人的整体牙齿大小是比较的人群中最小的，最接近阿伊努人。至于牙齿测量的形状因子，他们是密切相关的蒙古族人群所揭示的Q型相关系数。这些发现几乎是平行的主成分分析得到的结果。另一方面，基于7个非度量树冠特征的B平方距离显示了Negritos和Ainu之间的密切关系。两个群体冠幅性状的频率分布均符合Turner（1987）定义的“Sundadont”型（1978，1979，1987，1989）东南亚晚更新世人口历史的牙齿人类学模型，支持OMOTO提出的假说（1984，1986）提出，内格里托斯可能与马来西亚的Semang有共同的祖先，并在巽他大陆热带雨林环境下于更新世晚期演化。
Dental characteristics of Aeta, one of the Negrito tribes in westcentral Luzon, the Philippines, were compared with those of Japanese, Ainu, PimaIndians, Australian Aborigines, Filipinos, American Caucasoids and American Blacks. The overall tooth size of Negritos is smallest among the populations compared and closest to Ainu. As regards the shape factor of the dental measurements, they are closely related to Mongoloid populations as revealed by Q-mode correlation coefficients. These findings are almost parallel to the results obtained by principal component analysis. On the other hand, Bsquare distances based on seven non-metric crown characters show close affinity between Negritos and Ainu. The frequency distribution of the crown characters in both populations well corresponds to the "Sundadont" pattern defined by TURNER (1987).The results obtained from the present study, together with TURNER'S (1978, 1979, 1987, 1989) dental anthropological model of the late Pleistocene population history in southeast Asia, support the hypothesis proposed by OMOTO (1984, 1986) who suggested that Negritos might have shared an ancestral stock with Semang of Malaysia and evolved in the upper Pleistocene times under the environment of tropical rain-forest in Sundaland.