Microorganisms in recirculating aquaculture systems and their management
Recirculation aquaculture systems (RASs) are increasingly considered as production systems of the future with a minimum ecological impact for the production of aquatic food. To maintain a good water quality and to produce quality and healthy fishery products, the systems depend on a diverse microbia...
Published in: | Reviews in Aquaculture |
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ftunivwagenin:oai:library.wur.nl:wurpubs/451782 2024-02-11T10:08:27+01:00 Microorganisms in recirculating aquaculture systems and their management Rurangwa, E. Verdegem, M.C.J. 2015 text/html https://research.wur.nl/en/publications/microorganisms-in-recirculating-aquaculture-systems-and-their-man https://doi.org/10.1111/raq.12057 en eng https://edepot.wur.nl/296191 https://research.wur.nl/en/publications/microorganisms-in-recirculating-aquaculture-systems-and-their-man doi:10.1111/raq.12057 Wageningen University & Research Reviews in Aquaculture 7 (2015) 2 ISSN: 1753-5123 biological filters catfish ictalurus-punctatus channel catfish fixed-film biofilters nitrifying bacteria nitrite-oxidizing bacteria off-flavor 2-methylisoborneol rainbow-trout culture scophthalmus-maximus l ultraviolet-irradiation Article/Letter to editor 2015 ftunivwagenin https://doi.org/10.1111/raq.12057 2024-01-24T23:18:33Z Recirculation aquaculture systems (RASs) are increasingly considered as production systems of the future with a minimum ecological impact for the production of aquatic food. To maintain a good water quality and to produce quality and healthy fishery products, the systems depend on a diverse microbial community involved in different processes of water purification but also in unwanted effects. The article reviews the present knowledge on microorganisms in RAS, their relative distribution within the system compartments and their role in system performance. The system possesses different microniches in which microorganisms retrieve their preferential conditions for oxygen and nutrients. Ammonia and nitrite are oxidized under aerobic conditions into less toxic compounds. Anaerobic ammonium oxidizers in the biofilm oxidize anaerobically both ammonia and nitrites into less harmful dinitrogen gas. Heterotrophic bacteria mineralize organic matter derived from uneaten feeds, dead bodies and excreta of fish. Under conditions of high organic load and high C/N content, nitrifiers are overgrown by heterotrophs with negative effects to the nitrification process. For not yet understood reasons, the presence of off-flavour-producing microorganisms occurs also in RAS. Microbial management and management of inputs to the systems to prevent the proliferation of pathogens are discussed and possible management techniques of off-flavours are also presented. Research orientations are given to explore further the potential of heterotrophic bacteria in microbial management and intensive aquaculture production in systems other than RAS. Article in Journal/Newspaper Scophthalmus maximus Wageningen UR (University & Research Centre): Digital Library Reviews in Aquaculture 7 2 117 130 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
biological filters catfish ictalurus-punctatus channel catfish fixed-film biofilters nitrifying bacteria nitrite-oxidizing bacteria off-flavor 2-methylisoborneol rainbow-trout culture scophthalmus-maximus l ultraviolet-irradiation |
spellingShingle |
biological filters catfish ictalurus-punctatus channel catfish fixed-film biofilters nitrifying bacteria nitrite-oxidizing bacteria off-flavor 2-methylisoborneol rainbow-trout culture scophthalmus-maximus l ultraviolet-irradiation Rurangwa, E. Verdegem, M.C.J. Microorganisms in recirculating aquaculture systems and their management |
topic_facet |
biological filters catfish ictalurus-punctatus channel catfish fixed-film biofilters nitrifying bacteria nitrite-oxidizing bacteria off-flavor 2-methylisoborneol rainbow-trout culture scophthalmus-maximus l ultraviolet-irradiation |
description |
Recirculation aquaculture systems (RASs) are increasingly considered as production systems of the future with a minimum ecological impact for the production of aquatic food. To maintain a good water quality and to produce quality and healthy fishery products, the systems depend on a diverse microbial community involved in different processes of water purification but also in unwanted effects. The article reviews the present knowledge on microorganisms in RAS, their relative distribution within the system compartments and their role in system performance. The system possesses different microniches in which microorganisms retrieve their preferential conditions for oxygen and nutrients. Ammonia and nitrite are oxidized under aerobic conditions into less toxic compounds. Anaerobic ammonium oxidizers in the biofilm oxidize anaerobically both ammonia and nitrites into less harmful dinitrogen gas. Heterotrophic bacteria mineralize organic matter derived from uneaten feeds, dead bodies and excreta of fish. Under conditions of high organic load and high C/N content, nitrifiers are overgrown by heterotrophs with negative effects to the nitrification process. For not yet understood reasons, the presence of off-flavour-producing microorganisms occurs also in RAS. Microbial management and management of inputs to the systems to prevent the proliferation of pathogens are discussed and possible management techniques of off-flavours are also presented. Research orientations are given to explore further the potential of heterotrophic bacteria in microbial management and intensive aquaculture production in systems other than RAS. |
format |
Article in Journal/Newspaper |
author |
Rurangwa, E. Verdegem, M.C.J. |
author_facet |
Rurangwa, E. Verdegem, M.C.J. |
author_sort |
Rurangwa, E. |
title |
Microorganisms in recirculating aquaculture systems and their management |
title_short |
Microorganisms in recirculating aquaculture systems and their management |
title_full |
Microorganisms in recirculating aquaculture systems and their management |
title_fullStr |
Microorganisms in recirculating aquaculture systems and their management |
title_full_unstemmed |
Microorganisms in recirculating aquaculture systems and their management |
title_sort |
microorganisms in recirculating aquaculture systems and their management |
publishDate |
2015 |
url |
https://research.wur.nl/en/publications/microorganisms-in-recirculating-aquaculture-systems-and-their-man https://doi.org/10.1111/raq.12057 |
genre |
Scophthalmus maximus |
genre_facet |
Scophthalmus maximus |
op_source |
Reviews in Aquaculture 7 (2015) 2 ISSN: 1753-5123 |
op_relation |
https://edepot.wur.nl/296191 https://research.wur.nl/en/publications/microorganisms-in-recirculating-aquaculture-systems-and-their-man doi:10.1111/raq.12057 |
op_rights |
Wageningen University & Research |
op_doi |
https://doi.org/10.1111/raq.12057 |
container_title |
Reviews in Aquaculture |
container_volume |
7 |
container_issue |
2 |
container_start_page |
117 |
op_container_end_page |
130 |
_version_ |
1790607795586859008 |