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El canto de las aves: los músculos súper rápidos controlan el trillo de la paloma
Coen P H Elemans1, Igor L Y Spierts, Ulrike K Müller
1Experimental Zoology Group, Wageningen University, 6709 PG Wageningen, The Netherlands. coen.elemans@wur.nl
Nature
|September 10, 2004
Resumen
Las palomas utilizan músculos súper rápidos para controlar su jeringa para vocalizaciones rápidas en canciones de pájaros. Estos músculos recién identificados se encuentran entre los músculos vertebrados más rápidos conocidos y pueden ser comunes en el control vocal de las aves cantoras.
Área de la Ciencia:
- Zoología Zoología Zoología.
- La bioacústica es la bioacústica.
- Fisiología Muscular Fisiología Muscular
Sus antecedentes:
- Las canciones de las aves a menudo presentan trills rápidos que requieren un control vocal preciso.
- La siringe es el órgano vocal único de las aves responsable de la producción de sonido.
Objetivo del estudio:
- Para investigar los mecanismos musculares que subyacen a las vocalizaciones rápidas en los cantos de las aves.
- Para identificar los músculos específicos que controlan la siringe de la paloma.
Principales métodos:
- Electromiografía para registrar la actividad muscular durante las vocalizaciones.
- Análisis de video de alta velocidad para correlacionar la contracción muscular con el movimiento de la jeringa.
- Análisis histológico de los músculos de la siringe.
Principales resultados:
- Las palomas emplean músculos súper rápidos para controlar su jeringa.
- Estos músculos exhiben velocidades de contracción comparables a las de los órganos acústicos especializados.
- Los músculos identificados se encuentran entre los músculos vertebrados más rápidos documentados.
Conclusiones:
- Los músculos súper rápidos son cruciales para generar las vocalizaciones rápidas características de las canciones de los pájaros.
- Estos músculos pueden ser una adaptación generalizada para el control vocal en diversas especies de aves.
- Investigaciones adicionales podrían revelar la prevalencia de estos músculos en otros vertebrados vocalizadores.
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