Microbial maturation of intake water at different carrying capacities affects microbial control in rearing tanks for marine fish larvae

Attramadal, Kari J.K.; Minniti, Giusi; Øie, Gunvor; Östensen, Mari‐Ann; Bakke, Ingrid; Vadstein, Ôlav

doi:10.1016/j.aquaculture.2016.02.015

Cited by 33 publications

(31 citation statements)

References 12 publications

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“…On the contrary, for the larval rearing of fish, the RAS improved the reliability and performances of larval rearing. This enhancement was attributed to a better control of bacterial populations, notably opportunists with greater diversity and stability (Blancheton et al, 2013;Bakke et al, 2015;Attramadal et al, 2014Attramadal et al, , 2016. In this study, the similarity between the bacterial communities of FTS and RAS did not suggest that they were better equilibrated in RAS.…”

Section: Discussionmentioning

confidence: 49%

Determination of stocking density limits forCrassostrea gigaslarvae reared in flow-through and recirculating aquaculture systems and interaction between larval density and biofilm formation

Asmani

Petton

Grand

et al. 2017

Aquat. Living Resour.

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The first aim of this study was to determine the stocking density limits for Pacific oyster Crassostrea gigas larvae reared in flow-through system (FTS) and recirculating aquaculture systems (RAS). The second aim was to examine biofilm formation on the larval tank wall and its interaction with larvae growth. Three larvae concentrations were tested: 50, 150, and 300 mL−1. Chemical parameters and larvae performance were measured. The biofilm was observed by scanning electron microscopy, and its bacterial composition was investigated by pyrosequencing analysis of part of the 16S rRNA gene. The highest growth (13 µm day–1), survival (87%) and metamorphosis (50%) rates were observed in FTS at 50 larvae mL–1, while lower and similar performances occurred at 150 larvae mL–1 in both systems. At 300 larvae mL−1, performances dropped with occurrence of mortality. Biofilm thickness increased with larval density. The pioneer bacteria were coccobacilli followed by filamentous bacteria. The latter constituted abundant braids at the end of rearing at high larval concentrations. The first colonizers were mainly Rhodobacteraceae (α-Proteobacteria). The filamentous bacteria were Saprospirae (Bacteroidetes) and Anaerolineae (Chloroflexi). The biofilm was also made up of other minor groups, including Actinobacteria, Planctomycetes, δ-, γ-Proteobacteria, and Flavobacteriales. The biofilm's composition was more similar to that found in a sewage reactor than in open-sea collectors, which might negatively influence larval rearing due to potential metabolites. This first study on biofilms provides insights into the interaction between rearing density and larvae performance.

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Section: Discussionmentioning

confidence: 49%

Determination of stocking density limits forCrassostrea gigaslarvae reared in flow-through and recirculating aquaculture systems and interaction between larval density and biofilm formation

Asmani

Petton

Grand

et al. 2017

Aquat. Living Resour.

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“…Water management practices can have a profound impact on the microbial population diversity of aquarium water ( 37 ), which suggests that if found to be health promoting, it might be possible to promote an increase in the diversity of microbes in artificial seawater, so as to more closely resemble that of the animal’s native seawater. While some authors ( 38 ) describe how organic load and maturation of water increase the microbial carrying capacity of aquatic habitats, making them more stable and less open for opportunistic proliferation, other scientists present contrasting results ( 39 ), suggesting that increasing microbial exposure will also increase pathogen burden. It is essential that research be done to inform recommendations, and such research must carefully examine the interactions between water chemistry, the microbiome, and animal health indicators.…”

Section: Discussionmentioning

confidence: 99%

Environmental Sources of Bacteria Differentially Influence Host-Associated Microbial Dynamics

et al. 2018

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“…Stable water conditions most likely favour the colonization of recirculating water and biofilms by bacteria with a K‐selection strategy. K‐selection mainly occurs in communities that are close to the carrying capacity (CC) of a system, where the CC is the number of bacteria that can be sustained in the system over a long period of time (Attramadal et al., 2016). According to this, the selection pressure of bacteria is used to prevent the proliferation of opportunistic bacteria with an r‐selection strategy by filling all possible niches in the system with non‐opportunistic bacteria.…”

Section: Discussionmentioning

confidence: 99%

Effect of disinfection with peracetic acid on the microbial community of a seawater aquaculture recirculation system for Pacific white shrimp (Litopenaeus vannamei)

Teitge

Peppler²,

Steinhagen

et al. 2020

Journal of Fish Diseases

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When tropical shrimps are kept in recirculating aquaculture systems (RAS), one of the limiting factors is the maintenance of a sufficient water quality, and therefore, often disinfectants like peracetic acid (PAA) are added to the water either as prophylactic or treatment measure. In this study, PAA in concentrations of 0.1 mg/L, 1 mg/L and 10 mg/L was applied continuously for 56 days to small‐scale seawater RAS stocked with Litopenaeus vannamei. Treatment with 0.1 mg/L did not result in a reduction in the total bacterial amount and therefore was not effective. A concentration of 10 mg/L led to significant changes in the chemical water parameters already after 2 days and was therefore not recommendable. A concentration of 1 mg/L led to increased levels of ammonia and nitrite within 2 days and to a significant increase in the bacterial amount in the water, most probably due to an enhanced growth of heterotrophic bacteria. The microflora showed significant fluctuations, and there were indications that the welfare of the shrimps was affected. Using 1 mg PAA/L for prophylactic use is therefore also not recommendable but might be an alternative option for short‐term treatment in cases of disease outbreaks.

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Microbial maturation of intake water at different carrying capacities affects microbial control in rearing tanks for marine fish larvae

Cited by 33 publications

References 12 publications

Determination of stocking density limits forCrassostrea gigaslarvae reared in flow-through and recirculating aquaculture systems and interaction between larval density and biofilm formation

Determination of stocking density limits forCrassostrea gigaslarvae reared in flow-through and recirculating aquaculture systems and interaction between larval density and biofilm formation

Environmental Sources of Bacteria Differentially Influence Host-Associated Microbial Dynamics

Effect of disinfection with peracetic acid on the microbial community of a seawater aquaculture recirculation system for Pacific white shrimp (Litopenaeus vannamei)

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