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Los orígenes evolutivos de la vocalización social en el compartimento trasero-cerebro-espina dorsal de un vertebrado
Andrew H Bass1, Edwin H Gilland, Robert Baker
1Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA. ahb3@cornell.edu
Science (New York, N.Y.)
|July 19, 2008
Resumen
Se revela el origen de las redes de comunicación vocal en los vertebrados. Los investigadores mapearon los circuitos neuronales vocales en peces larvas, encontrando un patrón de desarrollo conservado compartido con los tetrápodos vocales, lo que sugiere un origen antiguo.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Biología evolutiva Biología evolutiva.
- Biología del desarrollo Biología del desarrollo.
Sus antecedentes:
- La comunicación social a través de la vocalización está muy extendida entre los vertebrados, incluidos peces, anfibios, aves y mamíferos.
- Los orígenes evolutivos y los fundamentos neuronales de la vocalización siguen siendo en gran medida desconocidos.
- La vocalización en los peces sirve para funciones como el cortejo y la defensa territorial.
Objetivo del estudio:
- Investigar los orígenes macroevolucionarios de los circuitos neuronales para la comunicación vocal.
- Trazar un mapa de los circuitos neuronales que subyacen a la vocalización en los peces larvas.
- Para comparar los patrones de desarrollo de las redes vocales a través de linajes de vertebrados.
Principales métodos:
- Mapeo de circuitos neuronales para la vocalización en peces larvas.
- Análisis del desarrollo de la red vocal en el cerebro posterior y la médula espinal.
- Análisis taxonómico comparativo entre diferentes grupos de vertebrados.
Principales resultados:
- La red vocal en los peces larvas se desarrolla en una región en forma de segmento que abarca el cerebro caudal posterior y la médula espinal rostral.
- Se observó un patrón altamente conservado de desarrollo de la red vocal entre los peces y los tetrápodos vocales.
- Esto sugiere una base de desarrollo compartida para la comunicación acústica en los vertebrados.
Conclusiones:
- La base neuronal para la comunicación acústica de los vertebrados probablemente evolucionó a partir de un antiguo compartimento de desarrollo compartido.
- Este compartimento estaba presente en los primeros peces y se conservó a través de la evolución de los vertebrados.
- El estudio proporciona información sobre la historia evolutiva de la comunicación social.
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