Acronym MicStaTech
Category
Aquaculture
Title Water treatment technology for microbial stabilization in landbased aquaculture systems Programme International Cooperation
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National-European Coordinator Olav Vadstein Coordinator email NA
Coordinator institution
NTNU - Norwegian University of Science and Technology (Norway)
Institutions involved
htw saar - Saarland University of Applied Sciences (Germany) ,
DTU - Technical University of Denmark (Denmark) ,
Start year 2015 End year 2017 Funding (€) € 878,500 Website NA Summary A common problem shown across species in aquaculture systems are damaging infections from opportunistic bacteria. The opportunistic r-strategists may be outcompeted by K-strategist in environments that are stable and where the ability to compete for limited resources (e.g. organic matter) is favoured, typically when the population is maintained close to the carrying capacity (CC) of the system over time. The feed loading and the efficiency of removal of organic matter (particulate or dissolved) are decisive parameters for the microbial CC of the system. Disinfection reduces the competition for limited resources, and therefore leads to r-selection during re-growth. Water treatment technology for promoting K-selection has shown very promising results for several marine species in small scale experiments, but the up-scaling and optimization for flow through systems (FTS) and recirculating aquaculture systems (RAS) remains. The technology is most likely also beneficial for later stages and fresh water fish. This project will include the development of culture-independent methods for assessing the fraction of opportunistic bacteria (r-strategists) in the water (WP1). The project will identify factors that are decisive for creating an efficient K-selective maturation unit that gives a biostable rearing water resistant to invasion and opportunistic blooms (WP2). In addition, we will develop a plan on designing and dimensioning different, but typical, land based systems to optimise K-selection and biostability (WP3). The effects of operational variables and management on biostability and resilience of the microbial community and the resulting effects on fish welfare and performance will be evaluated for and for Sparus aurata and Dicentrarchus labrax in a marine RAS (WP4) and for Oncorhynchus mykiss in a fresh water RAS (WP5). An evaluation of technology solutions will be included (WP6). Evaluation of the process in all WP’s will be based on characterization of microbial communities considering diversity, stability, growth potential and the proportion of r-strategist.
Keywords
Engineering;
Fish health;
Recirculating systems;
Land-based aquaculture;
Fish;
Seabream;
Bacteria;
Seabass;
Water quality;
Marine Region
76
Not associated to marine areas
0
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