Investigation of a Farm-scale Multitrophic Recirculating Aquaculture System with the Addition of Rhodovulum sulfidophilum for Milkfish (Chanos chanos) Coastal Aquaculture

Globally, coastal aquaculture is growing due to the large demand for marine products. Specific impacts caused by coastal aquaculture on the environment include the discharge of culture farm effluents, stress on ground water (the absence of recycling), nutrient pollution, and diseases of cultured ani...

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Bibliographic Details
Published in:Sustainability 2019-04, Vol.11 (7), p.1880
Main Authors: Chang, Bea-Ven, Liao, Chien-Sen, Chang, Yi-Tang, Chao, Wei-Liang, Yeh, Shinn-Lih, Kuo, Dong-Lin, Yang, Chu-Wen
Format: Article
Language:English
Subjects:
Algae
Aquaculture
Aquaculture effluents
Bacteria
Biofiltration
Chanos chanos
Chemical oxygen demand
Data analysis
Decapoda
Effluents
Fish
Fish ponds
Fish production
Fisheries
Fisheries research
Harvesting
Investigations
Marine aquaculture
Nitrogen
Pollution control
Ponds
Seaweeds
Sediments
Sustainability
Wastewater
Wastewater pollution
Water quality
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Summary:Globally, coastal aquaculture is growing due to the large demand for marine products. Specific impacts caused by coastal aquaculture on the environment include the discharge of culture farm effluents, stress on ground water (the absence of recycling), nutrient pollution, and diseases of cultured animals. Three methods, integrated multitrophic aquaculture (IMTA), recirculating aquaculture system (RAS), and beneficial bacteria for aquaculture, have been developed to solve these problems. In this study, the advantages of IMTA and RAS were integrated to develop a novel multitrophic recirculating aquaculture system (MRAS) to adapt to the farm-scale culturing of milkfish (Chanos chanos). The photosynthetic bacteria Rhodovulum sulfidophilum was added to enhance the performance of the farm-scale milkfish MRAS. This setting could promote growth of beneficial bacteria, such as the nitrogen cycle-associated microbial community and the anoxygenic phototrophic Acidobacteria community. The ammonia level was reduced, and the total phosphorous level was stable in the water recycled in the MRAS. The cyanobacteria, algae, Vibrio, Escherichia, and other potential pathogenic bacteria communities were inhibited in the MRAS. This study provides an effective design of a water recycling aquaculture system. Milkfish, Asian tiger shrimp (Penaeus monodon), Asian hard clam (Meretrix lusoria), and seaweed (Gracilaria sp.) can be cultured and simultaneously produced in the system.
ISSN:2071-1050
2071-1050
DOI:10.3390/su11071880