Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

Valentin Thépot; Joel Singer; Mike Rimmer; Nick Paul; Alexandra Campbell

doi:10.3390/microorganisms10030497

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Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

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Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

Valentin Thépot, Joel Singer, Mike Rimmer, Nick Paul and Alexandra Campbell

Microorganisms, Vol.10(3), pp.1-23

2022

DOI: https://doi.org/10.3390/microorganisms10030497

PMCID: PMC8954549

PMID: 35336073

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Abstract

functional ingredient

immunity

core microbiome

macroalga

rabbitfish

We recently demonstrated that dietary supplementation with seaweed leads to dramatic improvements in immune responses in S. fuscescens, a candidate species for aquaculture development in Asia. Here, to assess whether the immunostimulatory effect was facilitated by changes to the gut microbiome, we investigated the effects of those same seaweed species and four commercial feed supplements currently used in aquaculture on the bacterial communities in the hindgut of the fish. Since we found no correlations between the relative abundance of any particular taxa and the fish enhanced innate immune responses, we hypothesised that S. fuscescens might have a core microbiome that is robust to dietary manipulation. Two recently published studies describing the bacteria within the hindgut of S. fuscescens provided an opportunity to test this hypothesis and to compare our samples to those from geographically distinct populations. We found that, although hindgut bacterial communities were clearly and significantly distinguishable between studies and populations, a substantial proportion (55 of 174 taxa) were consistently detected across all populations. Our data suggest that the importance of gut microbiota to animal health and the extent to which they can be influenced by dietary manipulations might be species-specific or related to an animals’ trophic level.

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Title: Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?
Authors: Valentin Thépot (Corresponding Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Joel Singer (Author) - CSIRO Agriculture and Food (Australia)
Mike Rimmer (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Nick Paul (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Alexandra Campbell (Author) - University of the Sunshine Coast, Queensland, School of Health and Behavioural Sciences - Legacy
Publication details: Microorganisms, Vol.10(3), pp.1-23
Publisher: MDPI AG
Date published: 2022
DOI: 10.3390/microorganisms10030497
ISSN: 2076-2607
PMID: 35336073; PMC8954549
Copyright note: Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Organisation Unit: School of Health - Biomedicine; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; School of Health and Behavioural Sciences - Legacy
Language: English
Record Identifier: 99619108702621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Microbiology