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Comentario a "Una asociación entre el parentesco y la fertilidad de las parejas humanas"
Rodrigo Labouriau1, António Amorim
1Department of Genetics and Biotechnology, Faculty of Agricultural Sciences, Aarhus University, DK-8830 Tjele, Denmark. rodrigo.labouriau@agrsci.dk
Science (New York, N.Y.)
|December 17, 2008
Resumen
La fertilidad humana muestra una relación compleja con el parentesco, inicialmente aumentando y luego disminuyendo. Este patrón sugiere los efectos combinados de la depresión por endogamia y la depresión por endogamia sobre el éxito reproductivo.
Área de la Ciencia:
- Ecología reproductiva humana ecología reproductiva humana.
- Genética de poblaciones genética de poblaciones.
- Antropología Antropología de la Antropología.
Sus antecedentes:
- Investigaciones anteriores indicaron una asociación positiva entre el parentesco y la fertilidad en Islandia.
- El análisis actual reexamina esta asociación, revelando una relación más matizada.
Objetivo del estudio:
- Analizar la asociación entre el parentesco y la fertilidad en la población islandesa.
- Investigar los efectos potenciales de la endogamia y la procreación en la fertilidad humana.
Principales métodos:
- Nuevo análisis de los datos de Helgason et al. (2008) sobre la población islandesa.
- Examen de un amplio estudio sobre la población danesa.
Principales resultados:
- La fertilidad inicialmente aumenta con el aumento de la parentesco, luego posteriormente decae.
- La evidencia sugiere una superposición de la endogamia y los efectos de la depresión de la endogamia en la fertilidad humana.
Conclusiones:
- La relación entre el parentesco y la fertilidad no es lineal, con un nivel óptimo de parentesco.
- Tanto la endogamia como la procreación externa pueden tener un impacto negativo en el éxito reproductivo humano.
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