Hostname: page-component-77c89778f8-m42fx Total loading time: 0 Render date: 2024-07-24T06:32:25.486Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effect of Migration on Maximum Opportunity for Selection

Published online by Cambridge University Press:  31 July 2008

Motofumi Masaki
Motofumi Masaki
Affiliation:
Center for Demographic and Population Genetics, School of Biomedical Sciences, University of Texas, Houston, USA
Get access Rights & Permissions [Opens in a new window]

Summary

The effect of migration on the maximum opportunity for selection is analysed using koseki data, the Japanese family registration records, of a village population in a small island. When selection intensity is divided into two components, migration greatly influences the variance of the mortality component of the original formula. The difference in selection intensity, with and without allowance for migration, is conspicuous in the recent cohort; the intensity, with a migration component, shows a consistent increase, whereas it declined in the original formula. The implications of this are discussed in the context of the genetic structure of a population of small size, changing rapidly over time.

Type
Research Article
Information
Journal of Biosocial Science , Volume 20 , Issue 3 , July 1988 , pp. 337 - 344
Copyright
Copyright © Cambridge University Press 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Cavalli-Sforza, L. L. & Bodmer, W. F. (1971) The Genetics of Human Populations, p. 421. Freeman, San Francisco.Google Scholar
Crow, J. F. (1958) Some possibilities for measuring selection intensities in man, Hum. Biol. 30, 1.Google ScholarPubMed
Kendall, M. G. & Stuart, A. (1958) The Advanced Theory of Statistics, Vol. 1, Distribution Theory, p. 243. Griffin, London.Google Scholar
Kirk, D. (1968) Pattern of survival and reproduction in the United States: implications for selection. Proc. natn. Acad. Sci. 59, 13.CrossRefGoogle ScholarPubMed
Kobayashi, K. (1969) Changing patterns of differential fertility in the population of Japan. In: Proceedings of the Eighth International Congress of Anthropological and Ethnological Sciences, p. 345. Science Council of Japan, Tokyo.Google Scholar
Mainichi Newspapers (1981) Report on the Sixteenth Public Opinions Survey on Birth Control in Japan, p. 41. Mainichi Newspapers Population Problems Research Council, Tokyo.Google Scholar
Masaki, M. & Koizumi, A. (1988) Demographic characteristics and their genetic implications in a small island. J. biosoc. Sci. 20, 225.CrossRefGoogle Scholar
Matsunaga, E. (1966) Possible genetic consequences of family planning. J. Am. med. Ass. 198, 533.CrossRefGoogle ScholarPubMed
Morton, N. E. (1970) Genetic structure of northeastern Brazilian populations. In: The Ongoing Evolution of Latin American Populations, p. 251. Edited by Salzano, F. M.. Thomas, Springfield.Google Scholar
Roberts, D. F. (1968) Genetic effects of population size reduction. Nature, Lond. 220, 1084.CrossRefGoogle ScholarPubMed
Spuhler, J. N. (1976) The maximum opportunity for natural selection in some human populations. In: Demographic Anthropology, p. 185. Edited by Zubrow, E. B. W.. University of New Mexico Press, Albuquerque.Google Scholar