Population History of Japan as Viewed from Cranial Nonmetric Variation
Population History of Japan as Viewed from Cranial Nonmetric Variation
复制标题
从颅骨非测量变异看日本人口史
DOI：
10.1537/ase1911.98.269
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
H. Ishida
中科院分区：
文献类型：
--
作者：
Y. Dodo;H. Ishida
对来自日本的八个人口样本的颅骨非测量特征的发生率数据进行了分析，年龄范围从 4, 000 BP 到 4, 000 BP。到现在。从中世纪早期到现代的过去 600 年里，日本样本中的性状频率极其均匀，当时日本没有明显的来自海外的基因流动。推测颅骨非计量性状的发生模式忠实地反映了日本历史时期的遗传构成。SMITH基于20个非计量性状的发生率数据得出的原史与历史日本样本之间的平均分歧度(MMD)在统计上不显着，而新石器时代绳文与上述日本样本之间的差异均值远远超过0.01的显着性水平。 MMD以及MMD聚类分析和主坐标分析表明：（1）绳文人和原始古坟人之间存在人口不连续性； (2) 新石器时代弥生时期是许多不同人群——本土人和来自大陆的移民——为分散而奋斗的阶段； (3)到弥生时代末期，移民的基因构成已经超过了本地人，现代日本人的直系祖先群体在史前古坟时代就已经确立。至于绳文人和阿伊努人，则表现出密切的亲缘关系。
Incidence data of cranial nonmetric traits were analysed in eight population samples from Japan, ranging in age from 4, 000 B.P. to the present time. The trait frequencies were extremely homogeneous in the Japanese samples during the last 600 years from early medieval to modern times when no significant gene flow from overseas was evident in Japan. It was inferred that the incidence pattern of cranial nonmetric traits faithfully reflected the Japanese genetic constitution of historic times.SMITH's Mean Measures of Divergence (MMDs) based on the incidence data of 20 nonmetric traits between the protohistoric and historic Japanese samples were statistically insignificant, whereas those between the Neolithic Jomon and the foregoing Japanese samples far exceeded the significance level of 0.01. The MMDs as well as the cluster analysis and principal coordinate analysis of MMDs suggested that (1) there existed population discontinuity between the Jomon and the protohistoric Kofun people; (2) the Aeneolithic Yayoi period was a phase when a number of different populations - natives and immigrants from the Continent - were struggling for their dispersals; (3) genetic constitution of the immigrants had predominated over that of the natives by the end of the Yayoi period and as a result the direct ancestral population of the modern Japanese was stablished during the protohistoric Kofun period. As for the Jomon and Ainu, their close affinity was demonstrated.