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Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens

Most of our knowledge regarding the biodiversity of gut microbes comes from terrestrial organisms or marine species of economic value, with less emphasis on ecologically important species. Here we investigate the bacterial composition associated with the gut of Siganus fuscescens, a rabbitfish that...

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Autores principales: Nielsen, Shaun, Wilkes Walburn, Jackson, Vergés, Adriana, Thomas, Torsten, Egan, Suhelen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5437856/
https://www.ncbi.nlm.nih.gov/pubmed/28533966
http://dx.doi.org/10.7717/peerj.3317
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author Nielsen, Shaun
Wilkes Walburn, Jackson
Vergés, Adriana
Thomas, Torsten
Egan, Suhelen
author_facet Nielsen, Shaun
Wilkes Walburn, Jackson
Vergés, Adriana
Thomas, Torsten
Egan, Suhelen
author_sort Nielsen, Shaun
collection PubMed
description Most of our knowledge regarding the biodiversity of gut microbes comes from terrestrial organisms or marine species of economic value, with less emphasis on ecologically important species. Here we investigate the bacterial composition associated with the gut of Siganus fuscescens, a rabbitfish that plays an important ecological role in coastal ecosystems by consuming seaweeds. Members of Firmicutes, Bacteroidetes and delta-Proteobacteria were among the dominant taxa across samples taken from the contents and the walls (sites) of the midgut and hindgut (location). Despite the high variability among individual fish, we observed statistically significant differences in beta-diversity between gut sites and gut locations. Some bacterial taxa low in abundance in the midgut content (e.g., Desulfovibrio) were found in greater abundances on the midgut wall and within the hindgut, suggesting that the gut may select for specific groups of environmental and/or food-associated microorganisms. In contrast, some distinct taxa present in the midgut content (e.g., Synechococcus) were noticeably reduced in the midgut wall and hindgut, and are thus likely to be representative of transient microbiota. This is the first assessment of the bacterial diversity associated with the gut of S. fuscescens and highlights the need to consider the variability across different gut locations and sites when analyzing fish gut microbiomes.
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spelling pubmed-54378562017-05-22 Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens Nielsen, Shaun Wilkes Walburn, Jackson Vergés, Adriana Thomas, Torsten Egan, Suhelen PeerJ Ecology Most of our knowledge regarding the biodiversity of gut microbes comes from terrestrial organisms or marine species of economic value, with less emphasis on ecologically important species. Here we investigate the bacterial composition associated with the gut of Siganus fuscescens, a rabbitfish that plays an important ecological role in coastal ecosystems by consuming seaweeds. Members of Firmicutes, Bacteroidetes and delta-Proteobacteria were among the dominant taxa across samples taken from the contents and the walls (sites) of the midgut and hindgut (location). Despite the high variability among individual fish, we observed statistically significant differences in beta-diversity between gut sites and gut locations. Some bacterial taxa low in abundance in the midgut content (e.g., Desulfovibrio) were found in greater abundances on the midgut wall and within the hindgut, suggesting that the gut may select for specific groups of environmental and/or food-associated microorganisms. In contrast, some distinct taxa present in the midgut content (e.g., Synechococcus) were noticeably reduced in the midgut wall and hindgut, and are thus likely to be representative of transient microbiota. This is the first assessment of the bacterial diversity associated with the gut of S. fuscescens and highlights the need to consider the variability across different gut locations and sites when analyzing fish gut microbiomes. PeerJ Inc. 2017-05-17 /pmc/articles/PMC5437856/ /pubmed/28533966 http://dx.doi.org/10.7717/peerj.3317 Text en ©2017 Nielsen et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Ecology
Nielsen, Shaun
Wilkes Walburn, Jackson
Vergés, Adriana
Thomas, Torsten
Egan, Suhelen
Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens
title Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens
title_full Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens
title_fullStr Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens
title_full_unstemmed Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens
title_short Microbiome patterns across the gastrointestinal tract of the rabbitfish Siganus fuscescens
title_sort microbiome patterns across the gastrointestinal tract of the rabbitfish siganus fuscescens
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5437856/
https://www.ncbi.nlm.nih.gov/pubmed/28533966
http://dx.doi.org/10.7717/peerj.3317
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