Demographic Structure of a Small Genetic Isolate in Karnataka — South India

S. Yaseen Saheb

doi:10.18778/1898-6773.49.1-2.14

Authors

S. Yaseen Saheb Anthropological Survey of India, Southern Region

DOI:

https://doi.org/10.18778/1898-6773.49.1-2.14

Abstract

Amma Kodava są grupą endogamiczną liczącą około 2000 osób zamieszkujących górzysty teren okręgu Kodagu w stanie Karnataka. Populacja ta znajduje s:ię w przejściowej fazie jeśli idzie o przyrost naturalny. Uwidacznia się to w jej strukturze płci i wieku. Średnia liczba urodzeń w rodzinach o zakończonym cyklu reprodukcyjnym wynosi 4,20, a liczba dzieci dożywających dorosłości 3,94. Składniki I_f i I_m wskaźnika sposobności do selekcji Crowa [1958] wynoszą odpowiednio: 0,25 i 0,06. Ogólna wartość tego wskaźnika równa jest 0,33. Proporcja przepływu genów wynosi 0,856. Wskaźnik izolacji rozrodczej zmienia się od 3,53% do 5,19%. Wskaźnik dryfu genetycznego ma wartości od 0,00041 do 0,00061. Średnia odległość małżeńska wynosi 10,45 mili. Wskaźnik wsobności dla loci autosomalnych 0,002684 jest niższy niż w większości południowoindyjskich populacji. Nie stwierdzono żadnego istotnego wpływu kojarzeń wsobnych na płodność i wymieralność.

Downloads

Download data is not yet available.

References

Basu A., 1969, The Pahira: A population genetic study, Am. J. Phys. Anthrop., 31, 399. DOI: https://doi.org/10.1002/ajpa.1330310315

Cavalli-Sforza L. L., W. F. Bodmer, 1971, The Genetics of Human Populations, San Francisco.

Crow J. F., 1958, Some possibilities for measuring selection intensities in man, Hum. Biol., 30, 1.

Devi A. R. R., N. A. Rao, A. H. Bittles, 1981, Consanguinity, fecundity and post-natal mortality in Karnataka, South India, Ann. Hum. Biol, 81 (5), 469. DOI: https://doi.org/10.1080/03014468100005301

Lasker G. W., 1952, Mixture and genetic drift in ongoing human evolution, Am. Anthrop., 54, 433.

Lasker G. W., 1960, Migration, isolation. and ongoing human evolution, Hum. Biol. 32, 80.

Lasker G. W., B. Kaplan, 1984, The coefficient of breeding isolation, population size, migration rates and the possibilities for random genetic drift in six human communities in Northern Peru, Hum. Biol, 36, 327.

Li C. C., 1955, Population Genetics, Chicago.

Mukherjee D. P, S. Bhaskar, 1974, Studies on inbreeding and its effects in some endogamous populatins of Chittoor District. [In:] Proc. First Annual Conf. Ind. Soc. Hum. Gen.

Pollard A. H., Y. Farhat, G. N. Pollard, 1974, Demographic Techniques, Rushcutters Bay.

Rao A. P., D. P. Mukherjee, 1975, Consanguinity and inbreeding effects on fertility, mortality and morbidity in a small population of Tirupati. [In:] Proc. Second Conf. Ind. Soc. Hum. Genet.

Rao P. S. S., S. G. Inbara j, 1977, Inbreeding effects an human reproduction in Tamil Nadu of South India, Ann. Hum. Genet., 41, 87. DOI: https://doi.org/10.1111/j.1469-1809.1977.tb01964.x

Rao P. S. S., S. G. Inbaraj, 1979, Inbreeding in Tamil Nadu, Soc. Biol, 24, 281. DOI: https://doi.org/10.1080/19485565.1977.9988298

Rao P. S. S., S. G. Inbaraj, 1979a, Inbreeding effects on fertility and sterility in Southern India, J. Med. Genet., 16, 24. DOI: https://doi.org/10.1136/jmg.16.1.24

Rao P. S. S., S. G. Inbaraj, 1979b, Trends in human reproductive wastage in relation to long term practice of inbreeding, Ann. Hum. Genet., 42, 401. DOI: https://doi.org/10.1111/j.1469-1809.1979.tb00672.x

Rao N. V. K., S. Y. Saheb, 1981, Inbreeding in different ethnic groups of Indian populations, unpublished.

Reddy B. R. C., 1974, Genetic effects of consanguineous marriage, unpublished report of Anthropological Survey of India, Southern Regional Office, Mysore.

Reddy V. R., A. P. Rao, 1978, Inbreeding effects in a coastal village and other parts of Andhra Pradesh, Acta Genet. Med. Gemellol., 27, 89. DOI: https://doi.org/10.1017/S0001566000009557

Risley H. H., 1915, The People of India, 2nd. ed., London.

Roberts D. F., 1956, A demographic study of a Dinka village, Hum. Biol., 28, 323.

Saheb S. Y., 1979, Population structure of Kodava and Amma Kodava populations of Kodagu (Coorg) district, unpublished report Anthropological Survey of India, Calcutta.

Saheb S Y., S. M. Sirajuddin, C. M. Raju, D. B. Sastry, Ri. K. Gulati, 1981, Consanguinity and its effects on fertility and mortality in Kodava and Amma Kodava populations of Kodagu district, Ind. Anthropologist, 11 (in press).

Saheb S. Y., R. K. Gulati, D. B. Sastry, C. M. Raju, S. M. Sirajuddin, 1981, Kodavas of Karnataka: Their demographic profile, Przegl. Antrop., 48. DOI: https://doi.org/10.18778/1898-6773.48.1-2.04

Salzano F. M., J. V. Neel, D. M. Lewis, 1967, Demographic data on two additional villages: genetic structure of the tribe, Am. J. Hum. Genet., 19, 463.

Salzano F. M., 1972, Genetic aspects of demography of American Indians and Eskimos, [In:] The Structure of Human Populations. (eds, G. A. Harrison, J. Boyce), Oxford, 232.

Schull W. J., J. V. Neel, 1965, The effects of inbreeding on Japanese children, New York.

Shull W. J., H Nagano, M. Yamamoto, I. Komatsu, 1970, The effects of parental consanguinity and inbreeding in Hirado, Japan. I. Stillbirths and prereproductive mortality, Am. J. Hum. Genet., 22, 239.

Schull W. J., J. V. Neel, 1972, The effects of parental consanguinity and inbreeding in Hirado, Japan. V. Summary and interpretation, Am. J. Hum. Gent. 24, 425.

Srinivas M. N., 1852, Religion and society among the Coorgs of South India, Bombay.

Spuhler J. N., 1973, Anthropological genetics: An overview, [In:] Methods and Theories of Anthropological Genetics (eds. M. H. Crawford, P. L. Workman), Albuquerque, 423.

Wright S., 1922, Coefficient of Inbreeding and relationship, Am. Naturalist, 56, 330. DOI: https://doi.org/10.1086/279872

Wright S.,1931, Evolution in Mendelian populations, Genetics, 16, 97. DOI: https://doi.org/10.1093/genetics/16.2.97

Wright S., 1938, Size of population and breeding structure in relation to evolution, Science, 87, 430.