Journal of Aquaculture Research & Development

Sanchez A

Publications

• Research Article
  Nitrogen Flow in a Recirculating Operation of Litopenaeus vannamei Maturation in Ecuador
  Author(s): Intriago P *,Espinoza J ,Cabrera J ,Sanchez A ,Navarrete A Intriago P *,Espinoza J ,Cabrera J ,Sanchez A ,Navarrete A
  
  The nitrogen flow together with dissolved nutrients and other parameters are described in a large shrimp maturation operation in Ecuador. In summary, only 8.9% of the nitrogen input ended in animal tissue. Nitrate-N and dissolved organic nitrogen (DON) accounted for more than 95% of the nitrogen pool. The nitrogen dynamics in the system is driven by a nitrification based trickling filter attached population and a free living heterotrophic carbon limited in the sump. The average nitrification rate of TAN (total ammonia nitrogen) averaged 44.81 gd-1. The trickling filters worked as a nitrifier body and also reducing the organic load. There is also some evidence that the trickling filters might have also play some role in denitrification. Nitrate never reached high concentrations (<3.7 mg L-1 nitrate-N), hence did not present a danger to the productiv.. View More»
  DOI: 10.4172/2155-9546.1000153

  Abstract PDF