Bacterial diversity, community structure and function associated with biofilm development in a biological aerated filter in a recirculating marine aquaculture system

Gao, Xiyan; Xu, Yang; Liu, Ying; Liu, Zhi-Pei

doi:10.1007/s12526-011-0086-z

Cited by 49 publications

(22 citation statements)

References 35 publications

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“…Several Planctomycetes were reported in association with aquacultures environments namely Planctomyces, Pirellula, Rhodopirellula, and the ''Candidatus'' anammox (Sugita et al 2005;Bissett et al 2006;Kawahara et al 2009;Michaud et al 2009;Gao et al 2012) reinforcing our findings. The ecological role of Planctomycetes, namely R. baltica, in fish farm environments may be due to their ability to perform the dissimilatory nitrate reduction to ammonium (DNRA) as reveled by in silico analysis of R. baltica genome (Mohan et al 2004;Simon et al 2011).…”

Section: Planctomycetes In Aquacultures Environmentssupporting

confidence: 87%

“…Although not the most frequent, Planctomycetes seem to be usual inhabitants of aquaculture environments (Sugita et al 2005;Bissett et al 2006;Kawahara et al 2009;Michaud et al 2009;Gao et al 2012). In this study, we describe the isolation of Planctomycetes from the sediment of a treatment water recycling tank of a marine fish farm.…”

Section: Introductionmentioning

confidence: 96%

“…In the last decade, the great diversity of the microbial communities associated with aquaculture systems have been revealed using molecular tools (Tal et al 2003;Cytryn et al 2005;Sugita et al 2005;Michaud et al 2009;Gao et al 2012). Although not the most frequent, Planctomycetes seem to be usual inhabitants of aquaculture environments (Sugita et al 2005;Bissett et al 2006;Kawahara et al 2009;Michaud et al 2009;Gao et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Isolation and characterization of Planctomycetes from the sediments of a fish farm wastewater treatment tank

2012

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The increasing ecological significance of Planctomycetes and the still limited knowledge of this group prompted us to obtain cultured isolates from the sediment of a treatment water recycling tank of a marine fish farm. Presence of strains from this group was assessed in the sediments and water column of the tank. Eleven isolates were obtained from the sediment sample by exploiting Planctomycetes natural resistance to several antibiotics and their capacity to degrade organic matter. Based on morphological characteristics and resistance to antibiotics, Planctomycetes were identified. Their phylogenetic affiliation was confirmed by the sequence analysis of the 16S rRNA gene that revealed the presence of a group of 6 isolates closely related to Rhodopirellula baltica and a cluster of 5 isolates with 97.7-97.9 % of similarity to this species, which probably are a different species of Rhodopirellula. ERIC-PCR profiles showed a higher discrimination within the two groups and allowed the identification of nine different genotypes within the isolated strains. This work corroborates the association of Rhodopirellula spp. with fish farm environments.

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Section: Planctomycetes In Aquacultures Environmentssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Isolation and characterization of Planctomycetes from the sediments of a fish farm wastewater treatment tank

2012

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“…Water samples were collected at different sites, including the costal seawater from Qingdao, Yantai and Tianjin. The indigenous bacteria isolated from water samples were identified previously (Fu et al 2009;Gao et al 2011). Bacterial strains were stored in 10% (w/v) glycerol broth at -70°C.…”

Section: Bacterial Strainsmentioning

confidence: 99%

A dead-end filtration method to remove particle-associated pathogens in aquaculture systems

Shen

Chen

et al. 2012

Aquacult Int

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To reduce the incidence of bacterial diseases in recirculating aquaculture systems, 27 marine bacterial species were introduced into Instant Ocean maintained at 25°C. Those species were enumerated before and after filtration to evaluate the efficiency of the filtration procedure. The effects of sari filter and nylon filter on the survival of sea bass challenged with Vibrio alginolyticus were also determined. The results of laboratory studies indicated that the ability to remove pathogens was typically 1-3 log orders. Above 90% Vibrio sp., i.e., which were attached to particles, were removed by either 20-lm nylon net or four layers of sari. A 9.53% mortality of sea bass was reported in pilot filtration test using sari material as an end filter, while this percentage increased to 33.35% in control groups. It is concluded that a simple filtration procedure that involves the use of four-layer sari material can reduce the numbers of pathogens attached to particles in aquaculture system. The results of this study provide the basis for pathogen reductions in full-scale facilities.

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“…This reciprocal allelopathic response has implications in managing eutrophic water (Addisie & Medellin, ). Planktonic and biofilm microbial communities must also be differentiated, including physiological differences and gene expression (Becker, Hufnagle, Peters, & Herssmann, ; Gao, Xu, Liu, Liu, & Liu, ; Moreno‐Paz, Gómez, Arcas, & Parro, ).…”

Section: Introductionmentioning

confidence: 99%

Theory of microbial ecology: Applications in constructing a recirculating aquaculture system

et al. 2018

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Concepts from microbial ecology have been applied to constructing a bioreactor in RAS for the production of tilapia (Oreochromis niloticus). The bioreactor consists of covered and uncovered tanks, with and without polyethylene net, separating the participation of photoautotrophic organisms from other microorganisms capable of absorbing nutrients. Absorption of nutrients by macrophytes, planktonic algae and bacteria was evaluated by the increase in macrophyte biomass, algae density and number of bacterial cells respectively. Density of bacteria adhering to the net and roots of the macrophytes was quantified. All the bacterial quantifications were made using Fluorescent in situ hybridisation. Temperature and pH were measured throughout the experiment. Concentrations of ammoniacal nitrogen, nitrite, nitrate and phosphate were measured at the beginning and final stages. Increase in the nitrite/nitrate concentration and abundance of ammonia‐oxidising and nitrite‐oxidising bacteria, as well as the pH decrease are an evidence of the nitrification. Algae/macrophytes growth in the bioreactor tanks appears to assist in phosphorous immobilisation. There was an increase in the mean abundance of bacteria in the RAS tanks, while an increase was noted in the abundance of Nitrobacter and AOB‐β‐proteobacteria in the bioreactor entry tank compared with the water exit tank. Such observations enable us to state that nitrifying bacteria adapt to the conditions of the bioreactor tanks, acting to maintain ammoniacal nitrogen levels in the system. Our results show that the arrangement of the constructed RAS kept the water quality in suitable levels to the tilapia cultivation.

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Bacterial diversity, community structure and function associated with biofilm development in a biological aerated filter in a recirculating marine aquaculture system

Cited by 49 publications

References 35 publications

Isolation and characterization of Planctomycetes from the sediments of a fish farm wastewater treatment tank

Isolation and characterization of Planctomycetes from the sediments of a fish farm wastewater treatment tank

A dead-end filtration method to remove particle-associated pathogens in aquaculture systems

Theory of microbial ecology: Applications in constructing a recirculating aquaculture system

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