Effects of water temperature on the gut microbiome and physiology of Chinook salmon (Oncorhynchus tshawytscha) reared in a freshwater recirculating system

Steiner, Konstanze; Laroche, Olivier; Walker, Seumas P.; Symonds, Jane E.

doi:10.1016/j.aquaculture.2022.738529

Cited by 28 publications

(12 citation statements)

References 99 publications

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“…The core gut microbiota for fish has been determined in many studies ( Kokou et al, 2019 ), including Chinook salmon ( Zhao et al, 2020 , 2021 ; Steiner et al, 2021 , 2022 ). However, the core microbial communities can vary due to different fish species, sampling points, and screening criteria.…”

Section: Discussionmentioning

confidence: 99%

“…may be a native intestinal bacterium for farmed Chinook salmon when the salmon are reared in freshwater with higher abundance occurring in older fish. More studies are needed to investigate the characteristics of Photobacterium since it could closely interact with the host and other abundant gut community members and thus may play a key role in host performance ( Steiner et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

“…In marine fish, gut microbial communities are primarily dominated by four bacterial phyla, Proteobacteria , Firmicutes , Fusobacteria , and Actinobacteria , while at the species and strain level, there is significant diversity, resulting from fish species differences and inter-individual variability ( Egerton et al, 2018 ). Aquaculture now supplies over 45% of fish-based food products worldwide ( Longo et al, 2019 ) and the interest in the gut microbiota of salmonids is accelerating due to their significant economic importance in aquaculture ( Minich et al, 2020 ; Nguyen et al, 2020 ; Zhao et al, 2020 , 2021 ; Steiner et al, 2021 , 2022 ). The gastrointestinal (GI) tract is also an important site for infections ( Xiong et al, 2019 ) and in that respect the GI microbiome is a potential biomarker for stress ( Perry et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

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Relationship between gut microbiota and Chinook salmon (Oncorhynchus tshawytscha) health and growth performance in freshwater recirculating aquaculture systems

et al. 2023

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Gut microbiota play important roles in fish health and growth performance and the microbiome in fish has been shown to be a biomarker for stress. In this study, we surveyed the change of Chinook salmon (Oncorhynchus tshawytscha) gut and water microbiota in freshwater recirculating aquaculture systems (RAS) for 7 months and evaluated how gut microbial communities were influenced by fish health and growth performance. The gut microbial diversity significantly increased in parallel with the growth of the fish. The dominant gut microbiota shifted from a predominance of Firmicutes to Proteobacteria, while Proteobacteria constantly dominated the water microbiota. Photobacterium sp. was persistently the major gut microbial community member during the whole experiment and was identified as the core gut microbiota for freshwater farmed Chinook salmon. No significant variation in gut microbial diversity and composition was observed among fish with different growth performance. At the end of the trial, 36 out of 78 fish had fluid in their swim bladders. These fish had gut microbiomes containing elevated proportions of Enterococcus, Stenotrophomonas, Aeromonas, and Raoultella. Our study supports the growing body of knowledge about the beneficial microbiota associated with modern salmon aquaculture systems and provides additional information on possible links between dysbiosis and gut microbiota for Chinook salmon.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relationship between gut microbiota and Chinook salmon (Oncorhynchus tshawytscha) health and growth performance in freshwater recirculating aquaculture systems

et al. 2023

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“…Furthermore, MHWs will impact both the water and fish microbial communities [ 9 ]. However, the knowledge on the impacts of long-lasting high-water temperatures on the water and fish microbiotas composition, and cascading effects on fish physiology and aquaculture productivity are still limited [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Mediterranean Sea heatwaves jeopardize greater amberjack’s (Seriola dumerili) aquaculture productivity through impacts on the fish microbiota

Sánchez-Cueto

Stavrakidis-Zachou

Clos-García³

et al. 2023

ISME Communications

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Climate change is dramatically increasing the frequency and severity of marine heatwaves (MHWs) in the Mediterranean basin, strongly affecting marine food production systems. However, how it will shape the ecology of aquaculture systems, and the cascading effects on productivity, is still a major knowledge gap. The present work aims to increase our understanding of future impacts, caused by raising water temperatures, on the interaction between water and fish microbiotas, and consequential effects upon fish growth. Thus, the bacterial communities present in the water tanks, and mucosal tissues (skin, gills and gut), of greater amberjack farmed in recirculatory aquaculture systems (RAS), at three different temperatures (24, 29 and 33 °C), were characterized in a longitudinal study. The greater amberjack (Seriola dumerili) is a teleost species with high potential for EU aquaculture diversification due to its fast growth, excellent flesh quality and global market. We show that higher water temperatures disrupt the greater amberjack’s microbiota. Our results demonstrate the causal mediation exerted by this bacterial community shifts on the reduction of fish growth. The abundance of members of the Pseudoalteromonas is positively correlated with fish performance, whereas members of the Psychrobacter, Chryseomicrobium, Paracoccus and Enterovibrio are suggested as biomarkers for dysbiosis, at higher water temperatures. Hence, opening new evidence-based avenues for the development of targeted microbiota-based biotechnological tools, designed to increase the resilience and adaptation to climate change of the Mediterranean aquaculture industry.

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“…As water inhabitants, fish are always in close contact with changing environmental stimuli. Environmental abiotic factors, such as temperature, salinity, and pH, affect the fish gut microbiota and immune response ( Sylvain et al, 2016 ; Dehler et al, 2017 ; Behera et al, 2022 ; Steiner et al, 2022 ). Recently, advanced sequencing technology and developed bioinformatics tools have increased the research on the fish gut microbiota ( Ghanbari et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Freshwater transfer affected intestinal microbiota with correlation to cytokine gene expression in Asian sea bass

et al. 2023

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As a catadromous fish, Asian sea bass (Lates calcarifer) juveniles migrate from seawater (SW) to freshwater (FW) for growth and development. During migration, they undergo physiological changes to acclimate to environmental salinity. Thus, it is crucial to understand how SW-to-FW migration affects the gut microbiota of catadromous fish. To the best of our knowledge, no study has revealed the effects of transfer to hypotonic environments on a catadromous fish microbiota. In this study, we aimed to determine the effects of FW transfer on the microbiota and cytokine gene expression in the intestines of juvenile catadromous Asian sea bass. The relationship between the water and the gut microbiota of this euryhaline species was also examined. We found that FW transfer affected both mucosa- and digesta-associated microbiota of Asian sea bass. Plesiomonas and Cetobacterium were dominant in both the mucosa- and digesta-associated microbiota of FW-acclimated sea bass. The pathogenic genera Vibrio, Staphylococcus, and Acinetobacter were dominant in the SW group. Although dominant fish microbes were present in the water, fish had their own unique microbes. Vitamin B6 metabolism was highly expressed in the FW fish microbiota, whereas arginine, proline, and lipid metabolism were highly expressed in the SW fish microbiota. Additionally, the correlation between cytokine gene expression and microbiota was found to be affected by FW transfer. Taken together, our results demonstrated that FW transfer altered the composition and functions of mucosa- and digesta-associated microbiota of catadromous Asian sea bass intestines, which correlated with cytokine gene expression.

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Effects of water temperature on the gut microbiome and physiology of Chinook salmon (Oncorhynchus tshawytscha) reared in a freshwater recirculating system

Cited by 28 publications

References 99 publications

Relationship between gut microbiota and Chinook salmon (Oncorhynchus tshawytscha) health and growth performance in freshwater recirculating aquaculture systems

Relationship between gut microbiota and Chinook salmon (Oncorhynchus tshawytscha) health and growth performance in freshwater recirculating aquaculture systems

Mediterranean Sea heatwaves jeopardize greater amberjack’s (Seriola dumerili) aquaculture productivity through impacts on the fish microbiota

Freshwater transfer affected intestinal microbiota with correlation to cytokine gene expression in Asian sea bass

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