GENETIC-DIVERGENCE IN WILD POPULATIONS OF MEDAKA, ORYZIAS-LATIPES (PISCES, ORYZIATIDAE) FROM JAPAN AND CHINA

被引:45
作者
SAKAIZUMI, M [1 ]
机构
[1] UNIV TOKYO, FAC SCI, INST ZOOL, TOKYO 113, JAPAN
关键词
D O I
10.1007/BF00115131
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Allozyme studies of the cyprinodont fish Oryzias latipes have revealed that the wild populations of this species have differentiated regionally, and that Japanese wild populations are composed of two distinct groups, the Northern Population and the Southern Population. In order to elucidate the genetic relationship and the origin of the two major populations, allozymic characters of the specimens from 21 localities in Japan and China were compared. Although Chinese populations could be distinguished from Japanese ones, they were more closely related to the Southern Population, and showed few allozymic traits of the Northern Population. It is likely that the latter is a relic population which has survived the glacial period along the western coast of north-eastern Japan.
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页码:119 / 125
页数:7
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