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Dimorfismo sexual en los primeros antropoides
Nature
|September 25, 1980
Resumen
Este estudio revela la evidencia más antigua de dimorfismo sexual en primates egipcios del Oligoceno. Esto sugiere que los primeros primates superiores vivían en grupos sociales complejos, no en parejas monógamas.
Área de la Ciencia:
- La paleoantropología es la paleoantropología.
- Evolución de los Primates Evolución de los Primates
- Comportamiento social de los primates.
Sus antecedentes:
- El dimorfismo sexual en el diente canino/premolar y el tamaño corporal está relacionado con la organización social en los primates vivos.
- Las especies de primates monógamos exhiben un dimorfismo sexual mínimo, a diferencia de las especies políginas con un dimorfismo pronunciado.
Objetivo del estudio:
- Para investigar el dimorfismo sexual en primates egipcios del Oligoceno.
- Inferir las estructuras sociales de los primeros fósiles de los antropoides del Viejo Mundo.
Principales métodos:
- Análisis del diente canino/premolar y del tamaño corporal en especies de primates fósiles.
- Comparación con los patrones de dimorfismo sexual en las especies de primates existentes.
Principales resultados:
- La primera evidencia de dimorfismo sexual fue encontrada en Aegyptopithecus zeuxis, Propliopithecus chirobates y Apidium phiomense.
- Esto representa el registro más antiguo de dimorfismo sexual entre los primates superiores.
Conclusiones:
- La presencia de dimorfismo sexual sugiere que estos primeros antropoides vivían en grupos sociales polígamos.
- Los hallazgos indican estructuras sociales complejas en los primeros fósiles de antropoides del Viejo Mundo, en lugar de la monogamia.
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