The effect of parental consanguinity and inbreeding in Hirado, Japan
1970; Springer Science+Business Media; Volume: 9; Issue: 4 Linguagem: Inglês
10.1007/bf00286995
ISSN1432-1203
AutoresWilliam J. Schull, T Furusho, Manabu Yamamoto, H Nagano, I Komatsu,
Tópico(s)Demographic Trends and Gender Preferences
ResumoA census of Hirado, Japan in the summer of 1964 produced data on the reproductive performances of husbands and wives for 10,530 marriages where either the husband, the wife, or both were alive and residing in the city at the time of the census. Approximately one in every 6 of these marriages involves spouses who are biologically related to one another, and in some 10 per cent of marriages the husband, wife, or both are inbred. Analysis of the effects of length of cohabitation, socio-economic status, and consanguinity and inbreeding on total pregnancies, total livebirths, and “net fertility” (total livebirths minus non-accidental deaths in the first 21 years of life) revealed the following insofar as marriages contracted in the years 1920–1939 are concerned:
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