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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
Published on: August 14, 2018
Las filogenias lingüísticas revelan pulsos de expansión y pausas en los asentamientos del Pacífico
R D Gray1, A J Drummond, S J Greenhill
1Department of Psychology, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
Science (New York, N.Y.)
|January 24, 2009
Resumen
La expansión de las lenguas austronesias se originó en Taiwán hace ~5230 años, apoyando un modelo de "pulso-pausa". Este estudio lingüístico revela patrones de asentamiento vinculados a innovaciones, mejorando nuestra comprensión de la prehistoria humana.
Área de la Ciencia:
- Lingüística computacional y biología evolutiva.
- El análisis filogenético de la prehistoria humana.
Sus antecedentes:
- La investigación de la prehistoria humana a menudo examina el papel de la expansión de la población en la diversidad.
- Se debaten los orígenes de los asentamientos austronesios: la expansión de "pausa de pulso" de Taiwán frente a la difusión de "barco lento" de Wallacea.
Objetivo del estudio:
- Para investigar el origen y los patrones de expansión de los colonos austronesios del Pacífico.
- Para probar los escenarios de expansión de "pausa de pulso" versus "barco lento" utilizando datos lingüísticos.
Principales métodos:
- Construcción de un árbol filogenético para 400 lenguas austronesias.
- Aplicación de métodos filogenéticos bayesianos y análisis de datos léxicos.
Principales resultados:
- Los árboles de lenguaje apoyan el escenario de "pausa de pulso", colocando el origen austronesio en Taiwán hace aproximadamente 5,230 años.
- Identificó pausas de asentamiento y pulsos de expansión correlacionados con innovaciones tecnológicas y sociales.
Conclusiones:
- Los métodos lingüísticos, de base de datos y filogenéticos computacionales resuelven efectivamente las preguntas sobre la prehistoria humana.
- Los hallazgos apoyan una rápida expansión de Taiwán como el modelo principal para los orígenes y la dispersión austronesios.
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