Status,reproductive success,and marrying polygynously |
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Institution: | 1. Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile;2. Department of Biological and Environmental Sciences, University of Tennessee at Chattanooga, Chattanooga, TN 37403, USA;3. Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile;4. Department of Biology, University of Louisiana, Monroe, LA 71209, USA;5. Biosonda Corporation, Santiago, Chile;6. Instituto de Ecología y Biodiversidad (IEB), Las Palmeras 3425, Ñuñoa, Santiago, Chile |
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Abstract: | A study of female reproductive histories from nineteenth-century Utah shows that although women who married polygynously had fewer children, their number of grandchildren was equal to that of women who married monogamously. Women who chose to marry high-status men polygynously traded decreased fertility for enhanced reproductive performance of offspring. High status can be associated with low fertility and yet still be consistent with fitness optimization. These results suggest how female reproductive decisions influence social structure and challenge previous assumptions concerning proximate measures of fitness. |
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