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espanolResumen: En este trabajo se presenta la estructura sexo-etaria del sitio Aquihueco y se discuten sus implicancias para la dinamica poblacional del noroeste de Patagonia argentina a comienzos del Holoceno Tardio. El sitio se encuentra emplazado en un medano sobre el Rio Curi Leuvu (Prov. del Neuquen) y ha sido definido como un sitio de entierro con una cronologia que abarca desde 4304±59 hasta 3650±70 anos AP. Se estimo un numero minimo de individuos de 64, incluyendo elementos desarticulados y fragmentarios de superficie y se confecciono una curva de edades de muerte en base a los 43 esqueletos hallados in situ. Los resultados indican la representacion de ambos sexos y todas las categorias de edad, excepto el rango 15-19,9 anos. La curva esta caracterizada por un patron bimodal con dos picos correspondientes a los rangos 0-4,9 anos (20,92%) y 25-29,9 (11,63%). Se calculo la proporcion juveniles/adultos y la mortalidad promedio en la ninez con el fin de caracterizar la dinamica poblacional. Ambos indices senalan que se trata de una muestra sesgada aunque en base a otras lineas (i.e. molecular, radiocarbonica, isotopica y zooarqueologica) se sugiere que podria corresponder a una poblacion creciente. La curva se comparo con otras obtenidas para sitios de areas vecinas. Si bien el patron general es similar, no se encontraron correlaciones estadisticamente significativas. EnglishAbstract: In this paper we present the sex and age-at-death structure of the Aquihueco archaeological burial site and discuss its implications for the population dynamics of northwestern Argentinian Patagonia at the beginning of the Late Holocene. The site is located on a sand-dune in the Curi Leuvu River valley (Neuquen Province) and has been defined as a burial site with a chronology that spans from 4304 ± 59 to 3650 ± 70 years BP. A minimum number of 64 individuals was estimated, including fragmentary bone remains spread on surface, and a mortality curve was built based on 43 skeletons in situ. Both sexes and all age categories, except the range 15-19.9 years, are represented in the sample. The mortality curve is characterized by a bimodal pattern with two peaks corresponding to the ranges 0-4.9 years (20.92%) and 25-29.9 (11.63%). The Juvenile/Adult Ratio and the Mean Childhood Mortality were calculated in order to characterize the population dynamics. Although both indices indicate a biased sample, other evidences (i.e. molecular, radiocarbon, isotopic and zooarchaeological) suggest it is growing population. The mortality curve was compared with those obtained for sites located in neighboring areas. The pattern is similar, but no statistically significant correlations were found.

INFERENCIAS PALEODEMOGRÁFICAS EN EL NOROESTE DE PATAGONIA A PARTIR DEL SITIO AQUIHUECÓ, PROVINCIA DEL NEUQUÉN, ARGENTINA