Drivers of ecological assembly in the hindgut of Atlantic Cod fed a macroalgal supplemented diet

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Drivers of ecological assembly in the hindgut of Atlantic Cod fed a macroalgal supplemented diet

Keating, C. (author)

Bolton-Warberg, M. (author)

Hinchcliffe, James, 1992 (author): Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences

Davies, R. (author)

Whelan, S. (author)

Wan, A. H. L. (author)

Fitzgerald, R. D. (author)

Davies, S. J. (author)

Smith, C. J. (author)

Ijaz, U. Z. (author)

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(creator_code:org_t)

2022-05-04
2022
English.
In: Npj Biofilms and Microbiomes. - : Springer Science and Business Media LLC. - 2055-5008. ; 8:1

Related links:: https://gup.ub.gu.se...; show more...; https://doi.org/10.1...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

It is difficult to disentangle the many variables (e.g. internal or external cues and random events) that shape the microbiota in the gastrointestinal tract of any living species. Ecological assembly processes applied to microbial communities can elucidate these drivers. In our study, farmed Atlantic cod (Gadus morhua) were fed a diet of 10% macroalgae supplement (Ulva rigida [ULVA] or Ascophyllum nodosum [ASCO] or a non-supplemented control diet [CTRL]) over 12 weeks. We determined the influence of ecological assembly processes using a suite of null-modelling tools. We observed dissimilarity in the abundance of common OTUs over time, which was driven by deterministic assembly. The CTRL samples showed selection as a critical assembly process. While dispersal limitation was a driver of the gut microbiome for fish fed the macroalgae supplemented diet at Week 12 (i.e., ASCO and ULVA). Fish from the ASCO grouping diverged into ASCO_N (normal) and ASCO_LG (lower growth), where ASCO_LG individuals found the diet unpalatable. The recruitment of new taxa overtime was altered in the ASCO_LG fish, with the gut microbiome showing phylogenetic underdispersion (nepotistic species recruitment). Finally, the gut microbiome (CTRL and ULVA) showed increasing robustness to taxonomic disturbance over time and lower functional redundancy. This study advances our understanding of the ecological assembly and succession in the hindgut of juvenile Atlantic cod across dietary treatments. Understanding the processes driving ecological assembly in the gut microbiome, in fish research specifically, could allow us to manipulate the microbiome for improved health or resilience to disease for improved aquaculture welfare and production.

Subject headings

NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
LANTBRUKSVETENSKAPER -- Bioteknologi med applikationer på växter och djur (hsv//swe)
AGRICULTURAL SCIENCES -- Agricultural Biotechnology (hsv//eng)

Keyword

gadus-morhua l.
gut microbiome
growth
immunity
metacommunity
communities
variability
inclusion
diversity
bacterial
Biotechnology & Applied Microbiology
Microbiology

Publication and Content Type

ref (subject category)
art (subject category)

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By the author/editor: Keating, C.; Bolton-Warberg, ...; Hinchcliffe, Jam ...; Davies, R.; Whelan, S.; Wan, A. H. L.; show more...; Fitzgerald, R. D ...; Davies, S. J.; Smith, C. J.; Ijaz, U. Z.; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Microbiology

AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Agricultural Bio ...

Articles in the publication: Npj Biofilms and ...

By the university: University of Gothenburg

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