UFJF - Universidade Federal de Juiz de Fora

Ecological management applied to the treatment of continental fish farm effluent

Data: 10 de November de 2016

   The expansion of aquaculture, associated with increased nutrients in the aquatic environment, can lead to the acceleration of algal productivity and alter the ecology of the aquatic ecosystem. In order to minimize the environmental impacts generated by aquaculture activity, we intend to test the effect of different types of effluent treatment in sedimentation basin systems for semi-intensive fish farming during one year of production of Nilotic Tilapia (Oreochromis niloticus).

   For this, four treatments with three replicates will be established:

 

    1. Control group, without macrophytes, or fish, or lanthanum modified clay;
    2.
Macrophyte E. crassipes and Cascudo (Hypostomus affinis);
    3.
Macrophyte E. crassipes, Cascudo (Hypostomus affinis) and Tilapia (Oreochromis niloticus);
    4.
Macrophyte E. crassipes and cascudo (Hypostomus affinis) and tilapia (Oreochromis niloticus) and lanthanum modified clay.

 

   The project also aims to answer the following questions:

 

    1. What are the nutrient concentrations (N and P) of effluent release and sediment quality in semi-intensive tilapia culture?
    2.
Which treatments meet the current legislation?
    3.
Do the treatments have an effect on the reduction of cyanobacteria?
    4.
What is the applicability and cost of growing tilapia?

 
   To ensure financial viability, the project will be submitted to a call for proposals for research promotion institutions, such as: AGEVAP no. 001/2015 (in progress), FAPEMIG and CNPq.

   Consideration should also be given to the availability of equipment from the Aquatic Ecology Laboratory for the analysis and assignment of space at the Fiperj Fish Production Unit for the experiment, which has the infrastructure necessary to house the project.

 

Members:

Nathan Oliveira Barros | Coordinator

Ive Santos Muzitano