Zoological Science
Zoological Science 1(5):795-800. October 1984
10.34425/zs000086
Rigid Isolation between the Northern Population and the Southern Population of the Medaka, Oryzias latipes
Sakaizumi Mitsuru
Zoological Institute, Faculty of Science, University of Tokyo, Tokyo 113, Japan
The genetic characters of the wild populations of the medaka, Oryzias latipes, were studied in the boundary between the Northern Population and the Southern Population in Japan. The two major populations were found to be isolated from each other rigidly, and the boundary was well correlated with mountain barrier. The populations with a genotype different from both major populations were found in the quite limited area around the western end of the boundary.
Received: April 17, 1984
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Acccepted: May 18, 1984
Keywords:
REFERENCES
1 0289-0003(1980)056[0448:AVIWPO]2.0.CO;2SakaizumiM.EgamiN.MoriwakiK. (1980) Allozymic variation in wild populations of the fish, Oryzias latipes. Proc. Japan Acad., 56 (B): 448–451.
2 0289-0003(1983)1983[0311:AVARDI]2.0.CO;2SakaizumiM.MoriwakiK.EgamiN. (1983) Allozymic variation and regional differentiation in the wild populations of the fish Oryzias latipes. Copeia, 1983: 311–318.
3 0289-0003(1969)078[0019:GDOTDB]2.0.CO;2OkadaA.TakahashiK. (1969) Geomorphic development of the drainage basin of the River Yura. J. Geography, 78: 19–37 (In Japanese with English abstract).