Ensayo de un sistema artificial con sedimento para crecimiento de juveniles de Litopenaeus vannamei: evaluación de dos micro cohortes con participación de nematodos y ‘bioflocs’

Testing an artificial system enclosing sediment for rearing of Litopenaeus vannamei juveniles: evaluation of two micro-cohorts with the involvement of nematodes and ‘bioflocs’

Autores

  • Eulalia Ibarra Mayorga
  • Carlos Rojas García
  • Raquel León Mateo

DOI:

https://doi.org/10.33936/la_tecnica.v0i12.596

Palavras-chave:

Cero intercambio de agua, Litopenaeus vannamei, Modelo camarón-sedimento, Nematodos  de vida libre, Sistemas de recirculación

Resumo

En el sistema artificial de alta densidad con sedimento (n=2 réplicas 150 juveniles/m2), las réplicas I y II se comportaron de forma similar durante 40 días. Fueron identificados 21 géneros de nematodos: Rhynchonema, Ceramonema, Metadesmolaimus, Xyala, Neochromadora, Gonionchus, Spilophorella, Dichromadora y otras taxas. La diversidad disminuyó desde 21 géneros hasta 1-3 géneros. La abundancia total de nematodos se redujo logarítmicamente (replica I:R2= 0.9786 y replica II: R2=0.9595) desde el día 0 hasta el día 40. Aparentemente, en el subsistema artificial camarón- sedimento-nematodos, se desarrollaron respuestas a nivel micro: las especies más sensibles sucumbieron y aquellas con alta tolerancia al enriquecimiento de materia orgánica (Rhynchonema, Ceramonema y Gonionchus) sobrevivieron. Se determinó con elevado grado de certeza que se pueden aplicar altas dosis de bioflocs sin efectos adversos en un sistema artificial controlado. 

Palabras clave: Cero intercambio de agua, Litopenaeus vannamei, Modelo camarón-sedimento, Nematodos de vida libre, Sistemas de recirculación

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Publicado

2014-06-02

Como Citar

Ibarra Mayorga, E., Rojas García, C., & León Mateo, R. (2014). Ensayo de un sistema artificial con sedimento para crecimiento de juveniles de Litopenaeus vannamei: evaluación de dos micro cohortes con participación de nematodos y ‘bioflocs’: Testing an artificial system enclosing sediment for rearing of Litopenaeus vannamei juveniles: evaluation of two micro-cohorts with the involvement of nematodes and ‘bioflocs’. La Técnica. Revista De Las Agrociencias. ISSN 2477-8982, (12), 64–75. https://doi.org/10.33936/la_tecnica.v0i12.596

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Ciencias de la Vida