Insight into bacterial population in aquaculture systems and its implication

Blancheton, Jean-Paul; Attramadal, Kari J.K.; Michaud, Luigi; D’Orbcastel, Emmanuelle Roque; Vadstein, Ôlav

doi:10.1016/j.aquaeng.2012.11.009

Cited by 214 publications

(179 citation statements)

References 63 publications

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“…In addition to heterotopic denitrification bacteria, representatives of bacteria were found that are capable of performing autotrophic (sulfide-dependent) denitrification or sulfide oxidation by nitrate. The most numerous group was the family Rhodobacteraceae , which have been identified in marine recirculation systems (Cytryn et al, 2005a, 2005b; Michaud, 2007; Schreier et al, 2010; Blancheton et al, 2013). Furthermore, bacteria of the order Bacteroidales were found as well, which are known to be present in marine nitrification aquaculture filters (Michaud, 2007; Interdonato, 2012), marine denitrification aquaculture filters (Cytryn et al, 2005a), and a sludge digestion basin of a zero-discharge mariculture system where sulfate reduction takes place (Cytryn et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Bacterial community analysis of marine recirculating aquaculture system bioreactors for complete nitrogen removal established from a commercial inoculum

et al. 2019

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An experimental recirculating aquaculture system was constructed under ambient seawater conditions to compare microbial community diversity of nitrifying and denitrifying biofilters that were derived from a commercial inoculum used for aquarium applications. Next generation sequencing revealed distinct and diverse microbial communities in samples analyzed from the commercial inoculant and the denitrification and nitrification biofilters. In all samples, communities were represented by a few dominant operational taxonomic units (OTUs). Bacteria having the capacity to carry out ammonia and nitrite oxidation were more abundant in the nitrification biofilter. Similarly, the proportion of the bacterial taxa known to carry out heterotrophic and autotrophic denitrification and participate in sulfur cycling were found in the denitrification bioreactor, and likely originated from the ambient environmental water source. Our results indicated that environmental seawater can be a favorable enhancement to the bacterial consortium of recirculating aquaculture systems biofilters.

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Section: Discussionmentioning

confidence: 99%

Bacterial community analysis of marine recirculating aquaculture system bioreactors for complete nitrogen removal established from a commercial inoculum

et al. 2019

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“…Understanding microbial community composition and its interaction with farmed organisms in RAS is essential for system management (Blancheton et al . ).…”

Section: Introductionmentioning

confidence: 97%

Microorganisms in recirculating aquaculture systems and their management

Rurangwa¹,

Verdegem

2014

Reviews in Aquaculture

197

150

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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.

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“…Managing microbial water quality is also an important component of RAS management, as bacteria, parasites and algae can affect fish growth and survival, and ultimately RAS output (Blancheton et al, 2013). Recently, Moestrup et al (2014) observed instances of fish kills within two Danish marine RAS where the cause was identified to be populations of two dinoflagellate species: Pfiesteria shumwayae and Luciella masanensis.…”

Section: Introductionmentioning

confidence: 98%