Filter effect of sea cucumber on organic matter in gray tilapia crops

Abstract

Aquaculture can be defined as an action or alternative commercial item, in terms of raising hydrobiological resources, similarly called fish, crustaceans, molluscs and aquatic vegetation, in environments totally discordant in relation to natural ones, where the variables physical and chemical can be relatively controllable, with the aim of replacing and improving the conditions by which these organisms can meet their needs as if they were in particularly normal environments. Worldwide aquaculture is one of the activities with the greatest use of water resources, in which it is necessary to bet on the implementation of systems that suppose water savings. This study was conducted in the Marine and Aquaculture Research Laboratory (LIMA) facilities of the UNAN-León, with the intention of comparing two different farming systems (monoculture and polyculture), which would allow to evaluate the filtration capacity of sea cucumber. (Isostichopus fuscus) on the organic matter produced in gray tilapia cultures (Oreochromis niloticus), obtaining as a result of the research 453.0 mg / L02 of organic matter, 0.32 mg / Lt of suspended matter, 6.29 mgNH3-N / L (Nitrogen Ammoniacal), 43.35 mg N02 -IL (Nitrite) and 18.4 mg N03 / L (Nitrate) for the polyculture system; On the other hand, data were obtained of 512 mg / L02 of organic matter, 4.48 mg / Lt of suspended matter, 17.02 mgNH3-N / L, 26.90 mg N02 -IL, 33.87 mg NO3 / L for the monoculture system, denoting the effectiveness of sea cucumber (Isostichopus fuscus) on the object of study.