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Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern
Published on: March 8, 2020
Los patrones de color del plumaje de un dinosaurio extinto
Quanguo Li1, Ke-Qin Gao, Jakob Vinther
1Beijing Museum of Natural History, 126 Tianqiao South Street, Beijing 100050, People's Republic of China.
Resumen
Los dinosaurios con plumas eran dinosaurios con plumas.
Área de la Ciencia:
- Paleontología Paleontología.
- Biología evolutiva Biología evolutiva.
- La bioquímica es la bioquímica.
Sus antecedentes:
- La apariencia de los dinosaurios ha sido debatida durante mucho tiempo.
- Los melanosomas fosilizados en las plumas ofrecen pistas sobre la coloración de los dinosaurios.
- La reconstrucción de antiguos patrones de color proporciona información sobre la vida de los dinosaurios.
Objetivo del estudio:
- Para reconstruir los patrones de color de las plumas de un dinosaurio terópodo paraviano basal del Jurásico tardío.
- Para investigar la evolución de la pigmentación basada en la melanina en las plumas de los dinosaurios.
- Comprender el papel potencial de la coloración de las plumas en la comunicación de los dinosaurios.
Principales métodos:
- Mapeo de los patrones de color de las plumas utilizando la morfología del melanosoma.
- Comparación cuantitativa de melanosomas fósiles con plumas existentes.
- Análisis de la forma y densidad del melanosoma para inferir el color.
Principales resultados:
- El dinosaurio estudiado tenía un cuerpo gris y oscuro con manchas faciales rugosas.
- Su corona era rugosa, y las plumas de las extremidades eran blancas con espiga negra.
- Los patrones de pigmentación basados en la melanina probablemente evolucionaron antes del vuelo motorizado en Maniraptora.
Conclusiones:
- Los patrones de color de las plumas en los dinosaurios se pueden reconstruir a partir de evidencia fósil.
- La coloración temprana de las plumas puede haber estado relacionada con la selección sexual o la comunicación.
- La evolución de la compleja pigmentación de las plumas es anterior al desarrollo del vuelo motorizado.
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