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11:17
Fundamental Technical Elements of Freeze-fracture/Freeze-etch in Biological Electron Microscopy
Published on: September 11, 2014
Fuente de nitrógeno para un detritivoro: el sustrato del detrito frente a los microbios asociados.
Science (New York, N.Y.)
|October 22, 1982
Resumen
Los gusanos marinos como Capitella capitata pueden absorber los nutrientes directamente de las algas. Sin embargo, dependen de los microbios para su nutrición cuando consumen detritos de hierba de pantano, lo que desafía las suposiciones anteriores sobre la alimentación de detritivoros.
Área de la Ciencia:
- Biología Marina Biología Marina.
- Ecología Ecología Ecología.
- Zoología Zoología Zoología.
Sus antecedentes:
- Tradicionalmente se creía que los detritivoros obtenían toda la nutrición de los microbios asociados a los detritos.
- El material vegetal no vivo (sustrato) no se consideró una fuente directa de nutrientes.
Objetivo del estudio:
- Investigar las fuentes de nitrógeno para la polichaeta Capitella capitata cuando se alimenta de diferentes tipos de detritus.
- Para determinar si Capitella capitata puede utilizar el sustrato de la planta directamente para la nutrición.
Principales métodos:
- Alimentación de Capitella capitata con detritos derivados de las algas marinas.
- Alimentación de Capitella capitata con detritos derivados de la hierba del pantano.
- Analizando las fuentes de nitrógeno utilizadas por las poliquetas.
Principales resultados:
- Capitella capitata obtuvo una porción significativa de su nitrógeno del sustrato de la planta de algas marinas.
- Los microbios sirvieron como la principal fuente de nitrógeno cuando Capitella capitata consumió detritus de hierba de pantano.
Conclusiones:
- Capitella capitata exhibe flexibilidad dietética, utilizando tanto el sustrato vegetal como los microbios para la nutrición.
- La fuente de detritus influye en la estrategia nutricional primaria de esta especie de poliquetas.
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