Los árboles de tiempo existentes son consistentes con una miríada de historias de diversificación
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Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.Los árboles de tiempo existentes por sí solos no pueden estimar de manera confiable la dinámica de diversificación debido a infinitos escenarios congruentes. Las nuevas variables identificables ofrecen un enfoque más robusto, pero los datos paleontológicos siguen siendo esenciales para las ideas macroevolucionarias.
Área De La Ciencia
- Biología evolutiva
- Filogenética
- Biología computacional
Sus Antecedentes
- Las filogenias calibradas en el tiempo de las especies existentes (tiempos existentes) son herramientas estándar para inferir dinámicas de diversificación.
- La fiabilidad de estas inferencias ha sido cuestionada, con un debate en curso sobre su exactitud.
Objetivo Del Estudio
- Aclarar el contenido de información de los árboles de tiempo existentes dentro del modelo generalizado de nacimiento-muerte.
- Investigar la identificabilidad de los escenarios de diversificación a partir de los datos filogenéticos.
Principales Métodos
- Prueba matemática que demuestre la existencia de escenarios de diversificación congruentes.
- Introducción y estimación de las variables identificables de los árboles de tiempo existentes.
Principales Resultados
- Un número infinito de escenarios de diversificación congruentes puede producir horarios existentes idénticos, haciéndolos indistinguibles.
- Los escenarios congruentes pueden exhibir dinámicas significativamente diferentes pero plausibles, lo que podría conducir a una interpretación excesiva de la evidencia filogenética.
Conclusiones
- Los árboles de tiempo existentes por sí solos proporcionan información limitada sobre las dinámicas de diversificación pasadas.
- Centrarse en variables identificables ofrece un método de estimación más sólido.
- Los datos paleontológicos siguen siendo indispensables para abordar ciertas cuestiones macroevolutivas.
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