Abstract
A study of consanguinity and population structure was carried out in a sample of 498 consanguineous (MC) and 570 non-consanguineous matings (MNC) in the Parrish of Dota, Costa Rica, during a period of 75 years. The inbreeding coefficient (F) shows fluctuations in time (476 to 194 x 10-5) with an increase from 1888 to 1917, followed by a decrease in the last years but remains high in nonmigrant marriages. There is a high frequency of unions among second cousins. The endogamy percentage is high, greater in MC (80%) than in MNC (61%). Exogamy tends to diminish with time among both types of union. Effects of age distributions in the groups were not found. Marital and migrational distances are short and tend to become shorter in the final periods. There is a positive correlation (r = 0,71 ; p <0,05) between these distances in MC but not in MNC; distances are shorter in MC. Inmigration is minimal and reduced to short distances. Post-marital movement is intense (37% and involves greater distances. Emigratory behavior is identical in MC and MNC.References
Alberts, J. 1971. La migración interna de Costa Rica. Centro Latinoamericano de Demografía, San José, Costa Rica, Serie AS, No. 8. 102 p.
Allen, G. 1968. Randolll and nonrandom inbreeding. Eugen. Quart., 12: 181-197.
Barrai, I., L. L. Cavalli-Sforza, & A. Moroni. 1969. The prediction of consanguineous maniage. Jap. J. Genet., 44: 230-233.
Boyee, A. J., C. F. Kuchemann, & G. A. Harrison. 1967. Neighbourhood knowledgc and the distribution of marriage distanccs. Ann. Hum. Genet., 30: 335-338.
Cavalli-Sforza, L. L. 1962. The distribution of migration distances: modcls, and applications to genetics, p. 139-158./11 J. Sulter, Les déplacemenrs humains. Hachette. Monaco.
Cavalli-Sforza, L. L., & W. Bodmer. 1971. The genetics of human populations. Freeman, San Francisco. 965 p.
Cavalli-Sforza, L. L., M. Kimura, & I. Barrai. 1966. The probability ofconsanguineous maniages. Genetics. 54: 37-60.
Costa Rica, Dirección General de Estadística y Censos. 1868. Censo a población de Costa Rica. Ministerio de Economía y Hacienda, San José, Costa Rica.
Costa Rica, Dirección General de Estadística y Censos. 1888. Censo General de la República de Costa Rica. 1864. Imprenta Nacional, San José, Costa Rica. 72 p.
Costa Rica, Dirección General de Estadística y Censos. 1953. Censo de Población de Costa Rica. 1950. Informe general. San José, Costa Rica. 115 p.
Costa Rica, Dirección General de Estadística y Censos. 1960. Censo de la población de Costa Rica. 1972. Ministerio de Economía y Hacienda, San José, Costa Rica, 115 p.
Costa Rica, Dirección General de Estadística y Censos. 1966. Censo de la Población de Costa Rica. 1963. Sección de Publicaciones, San José, Costa Rica. 633 p.
Crow, J., & A. P. Mange. 1965. Measurement of inbreeding from the frequency of marriages between persons of the same surname. Eugen. Quart., 12: 199-203.
Freire-Maia, N. 1968. Inbreeding levels in American and Canadian populations: a comparison with latin American. Eugen. Quart., 15: 33-48.
Freire-Maia, N. 1974. Genética de populacoes. Hucitec, Sao Paulo. 216 p.
Halsey, A. H. 1972. Social mobility, p. 19f-212. ln. G. A. Harrison & A. J. Boyce, The structure of human populations. Clarendon Press, Oxford.
Harrison, G. A., & A. J. Boyce 1972. Migration, exchange, and the genetic structure of populations, p. 128-145. In G. A. Harrisan & A. J. Boyce, The structure of human populations. Ciaren don Press, Oxfard.
Jeffries, P. J., G. A. Harrison, R. W. Hioros, & J. B. Gibson 1976. A note on marital distances and movement, and age at marriage, in a group of Oxfordshire villages. J. Biosoc. Sci., 8: 155-160.
Kimura, M., & T. Ohta. 1971. Theoretical aspects of population genetics. Princeton University Press, New Jersey. 219 p.
Majurnder, P. P. 1977. Matrimonial migration: a review, with special reference to India. J. Biosoc. Sci., 9: 381-401.
Morlon, N., & N. Ya suda. 1962. The genetical structure of human population, p. 185-204. In J . Sutter, Les déplacements humains. Haehette, Monaco.
Roisenberg, I., & N. Morton 1970. Population structure of blood groups in Central and South American Indians. Amer. J. Phys. Anthrop., 32: 373-376.
Ureña, E. 1941. Monografía de Santa María de Dota. Revista de los Archivos Nacionales, 5:. 69-87; 495-505.
Ureña, G., & M. Ureña 1971. Memoria del centenario de la Parroquia de Santa Maria de Dota, 1871-1971. Imprenta y Litografía Lehmann, San José, Costa Rica. 157 p.
Yasuda, N. 1975. The distribution of distance between brithplaces of mates. Hum. Biol., 47: 81-170.
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