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Comunicación animal: producción de llamadas complejas en la rana túngara
M Gridi-Papp1, A S Rand, M J Ryan
1Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo 13506-900, Brazil.
Nature
|May 5, 2006
Resumen
La rana túngara es una rana de la región de Túngara.
Área de la Ciencia:
- La bioacústica es la bioacústica.
- Comunicación con los animales Comunicación con los animales
- Biología evolutiva Biología evolutiva.
Sus antecedentes:
- Las vocalizaciones en muchos animales implican órganos integrados que producen sonidos.
- Las estructuras vocales específicas no suelen estar vinculadas a la producción de sílabas discretas.
Objetivo del estudio:
- Para investigar la base anatómica específica del sonido de "chuck" en la llamada de apareamiento de la rana túngara.
- Comprender el papel de esta estructura en la evolución de las vocalizaciones complejas.
Principales métodos:
- La extirpación quirúrgica de una masa fibrosa unida a las cuerdas vocales en Physalaemus pustulosus.
- Análisis acústico de las llamadas de apareamiento antes y después del procedimiento quirúrgico.
Principales resultados:
- La eliminación de la masa fibrosa eliminó el componente "chuck" de la llamada de apareamiento.
- Las ranas continuaron intentando la llamada "whine-chuck" después de la cirugía, lo que indica el papel específico de la estructura.
Conclusiones:
- Una estructura anatómica discreta, una masa fibrosa en las cuerdas vocales, es responsable del sonido de "chuck" en las ranas túngaras.
- Este hallazgo desafía la noción de que las vocalizaciones animales siempre son producidas por órganos integrados y sugiere la configuración evolutiva de la complejidad acústica.
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