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A STUDY USING DEMOGRAPHIC DATA OF GENETIC DRIFT AND NATURAL SELECTION IN AN ISOLATED MEDITERRANEAN COMMUNITY: BAYÁRCAL (LA ALPUJARRA, SOUTH-EAST SPAIN)

Published online by Cambridge University Press:  10 February 2011

F. LUNA ,
A. R. TARELHO ,
A. M. CAMARGO  and
V. ALONSO
F. LUNA
Affiliation:
Departamento de Zoología y Antropología Física, Universidad Complutense de Madrid, Madrid, Spain
A. R. TARELHO
Affiliation:
Departamento de Biologia Animal, Universidade de Lisboa, Lisbon, Portugal
A. M. CAMARGO
Affiliation:
Departamento de Zoología y Antropología Física, Universidad Complutense de Madrid, Madrid, Spain
V. ALONSO
Affiliation:
Departamento de Zoología y Antropología Física, Universidad Complutense de Madrid, Madrid, Spain Instituto de Salud Carlos III and CIBERER, Madrid, Spain
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Summary

Natural selection and genetic drift are two evolutionary mechanisms that can be analysed in human populations using their fertility and mortality patterns, and their reproductive size and isolation, respectively. This paper analyses the models of natural selection and genetic drift in Bayárcal, south-east Spain, and compares them with the observed models in the rest of the Alpujarran region. Demographic data were obtained from a sample of 77 families (48.45% of the population, with 547 inhabitants). The genetic drift and natural selection action was evaluated with the Coefficient of Breeding Isolation (CBI of Lasker and Kaplan) and Crow's index, respectively. The CBI (23.23/12.61) suggests that genetic drift is near to acting, and Crow's index (I=0.58) is slightly higher than that observed in the rest of La Alpujarra. Although the reproductive isolation of Bayárcal is not effective enough for genetic drift to act, it is near when marital migrants inside the Bayárcal valley are considered as a native population. The natural selection pattern is not different from that of the rest of La Alpujarra, but it tends towards the model of developing communities, where the demographic transition has not yet begun.

Type
Research Article
Information
Journal of Biosocial Science , Volume 43 , Issue 4 , July 2011 , pp. 401 - 411
Copyright
Copyright © Cambridge University Press 2011

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References

Albeza, M., Acreche, N. & Caruso, G. (2002) Biodemografía en poblaciones de la Puna (Chañarcito, Santa Rosa de los Pastos Grandes y Olacapato) Salta, Argentina. Chungara Revista de Antropologia Chilena 34 (1), 119–126.Google Scholar
Ayala, F. J. & Kiger, J. A. J. (1984) Genética Moderna. Omega, Barcelona.Google Scholar
Bailit, H. L., Damon, S. T. & Amon, A. (1966) Consanguinity on Tristan da Cuhna in 1938. Eugenics Quarterly 13 (1), 30–33.Google Scholar
Bernis, C. (1974) Estudio biodemográfico de la población maragata. PhD Thesis, University Complutense of Madrid.Google Scholar
Bertranpetit, J. (1981) Estructura i genética de la población de Formentera. PhD thesis, University of Barcelona.Google Scholar
Blanco Villegas, M. J. & Fuster, V. (2007) Differential reproductive pattern in a rural Spanish region (La Cabrera): consequences for potential natural selection. Annals of Human Biology 34 (6), 664–672.CrossRefGoogle Scholar
Boattini, A., Blanco Villegas, M. J. & Pettener, D. (2007) Genetic structure of La Cabrera, Spain, from surnames and migration matrices. Human Biology 79 (6), 649–666.Google ScholarPubMed
Bonné, B. (1963) The Samaritans: a demographic study. Human Biology 35, 61–89.Google ScholarPubMed
Bosque, J. (1969) Tradición y modernidad en las Alpujarras granadinas (Andalucía Oriental). In Aportación española al XXI Congreso geográfico internacional (Madrid)pp. 165–183.Google Scholar
Caro-Dobón, L. & Santo-Tomás, J. (1994) Inbreeding in Ojeda and Pernia, 1875–1985, province of Palencia, Spain. Journal of Biosocial Science 26, 327–340.CrossRefGoogle ScholarPubMed
Cavalli-Sforza, L. L. & Bodmer, W. F. (1981) Genética de las poblaciones humanas. Omega, Barcelona.Google Scholar
Cavalli-Sforza, L. L., Menozzi, P. & Piazza, A. (1994) The History and Geography of Human Genes. Princeton University Press, New Jersey.Google Scholar
Colantonio, S. & Celton, D. E. (1996) Estructura de una población semiaislada actual: reproducción, selección natural y deriva genética. Boletín de la Sociedad Española de Antropología Biológica 17, 105–127.Google Scholar
Cook, L. M. (1991) Genetic and Ecological Diversity. Chapman & Hall, London.Google Scholar
Crow, J. F. (1958) Some possibilities for measuring selection intensities in man. Human Biology 30, 1–13.Google ScholarPubMed
Crow, J. F. (1966) The quality of people: human evolutionary changes. Bioscience 16, 863–867.CrossRefGoogle Scholar
Friedl, J. & Ellis, W. (1974) Inbreeding, isonymy and isolation in a Swiss community. Human Biology 46, 699–712.Google Scholar
Fuster, V. (1982) Estructura antropogenética de la población de nueve parroquias del municipio de los Nogales, Lugo (1871–1977). PhD Thesis, University Complutense of Madrid.Google Scholar
Gil-Frias, A. & Luna, F. (1998) Genetic drift in present human populations. Survey of a Mediterranean region (La Alpujarra, SE Spain). Journal of Biosocial Science 30 (3), 359–364.CrossRefGoogle Scholar
Halberstein, R. A. & Crawford, M. H. (1972) Human biology in Tlaxcala, Mexico: demography. American Journal of Physical Anthropology 36, 199–212.CrossRefGoogle ScholarPubMed
Jacquard, A. (1974) Genetique des populations humaines. Presses Universitaires de France.Google Scholar
Johnston, F. E. & Kensinger, K. M. (1971) Fertility and mortality differentials and their implications for microevolutionary change among Cashinahua. Human Biology 43, 356–364.Google ScholarPubMed
Kimura, M. (1983) The Neutral Theory of Molecular Evolution. Cambridge University Press, Cambridge.Google Scholar
Küchemann, C. F., Boyce, A. J. & Harrison, G. A. (1967) A demographic and genetic study of a group of Oxfordshire villages. Human Biology 39, 251–276.Google Scholar
Lasker, G. W. (1960) Migration, isolation and ongoing human evolution. Human Biology 36, 327–338.Google Scholar
Lasker, G. W. & Crews, D. E. (1996) Behavioral influences on the evolution of human genetic diversity. Molecular Phylogenetics of Evolution 5, 232–240.CrossRefGoogle ScholarPubMed
Lasker, G. W. & Kaplan, B. (1964) The coefficient of breeding isolation: population size, migration rates and possibilities for random genetic drift in six human communities in Northern Peru. Human Biology 36, 327–338.Google Scholar
Lewontin, R. (1984) La Diversidad Humana. Prensa Científica, Barcelona.Google Scholar
Luna, F. (1984) Demografía de La Alpujarra: Estructura y Biodinámica. Coed. Excma. Diputación Provincial de Granada & Universidad de Granada.Google Scholar
Luna, F. & Fuster, V. (1990) Reproductive pattern in a rural mediterranean population (La Alpujarra, Spain). Journal of Biosocial Science 22, 501–506.CrossRefGoogle Scholar
Luna, F. & Moral, P. (1990a) Incidence of ecological factors on the evolution of infant mortality in a Mediterranean population (La Alpujarra, SE Spain). International Journal of Anthropology 5 (1), 63–69.Google Scholar
Luna, F. & Moral, P. (1990b) Incidence of ecological factors on the evolution of infant mortality in a Mediterranean population (La Alpujarra, SE Spain). Annals of Human Biology 17, 153–158.CrossRefGoogle Scholar
Luna, F., Moral, P., Alonso, V. & Fernandez-Santander, A. (2007) Factors influencing prereproductive mortality in the isolated and preindustrial western Mediterranean population of La Alpujarra, 1900–1950. Human Biology 79 (4), 381–394.CrossRefGoogle ScholarPubMed
Luna, F., Polo, V., Fernández-Santander, A. & Moral, P. (2001) Stillbirth pattern in an isolated Mediterranean population: La Alpujarra, Spain. Human Biology 73 (4), 561–573.Google Scholar
Masaki, M. & Koizumi, A. (1988) Demographic characteristics and their genetic implications in a small island. Journal of Biosocial Science 20, 225–234.CrossRefGoogle Scholar
Neel, J. V. & Changnon, N. A. (1968) The demography of two tribes of primitive relatively unacculturated American Indians. Proceedings of the National Academy of Sciences 59, 680–689.CrossRefGoogle ScholarPubMed
Palatnik, M. (1973) Demografia: parámetros de implicancia genética. In Palatnik, M. (ed.) Genética de la población Toba del Cacho argentino. Universidad Nacional, La Plata, Argentina.Google Scholar
Puzyrev, V. P., Erdynieva, L. S., Kucher, A. N. & Nazarenko, L. P. (1999) Genetic Epidemiological Study of the Tuvinian Population. STT, Tomsk.Google Scholar
Selander, R. K. (1980) Variación genética en las poblaciones naturales. In Ayala, F. J. (ed.) Evolución Molecular. Omega, Barcelona.Google Scholar
Serre, J. L., Jakobi, L. & Babron, M. C. (1985) A genetic isolate in the French Pyrenees: probabilities of origin of genes and inbreeding. Journal of Biosocial Science 17, 405–414.Google Scholar
Spuhler, J. N. (1963) The scope of natural selection in man. In Schull, W. J. (ed.) Genetic Selection in Man. University of Michigan Press, Ann Arbor.Google Scholar
Tarskaia, L. A., Elchinova, G. I., Varzar, A. M. & Shabrova, E. V. (2002) Genetic and demographic structure of the yakut population: reproduction indices. Genetika. 38 (7), 828–833.Google ScholarPubMed
Torrejon, J. & Bertranpetit, J. (1987) Estructura biodemográfica de la población del Valle de Camprodón. Trabajos de Antropología 20, 393–557.Google Scholar
Tripp-Reimer, T. (1980) Genetic demography of an urban Greek immigrant community. Human Biology 52, 255–267.Google ScholarPubMed
Tyzzer, R. N. (1974) An investigation of the demographic and genetic structure of a south-western American Indian population, the southern Ute tribe of Colorado. PhD Thesis, University of Colorado.Google Scholar