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Gut microbiome plasticity and host resistance in response to ocean warming in sub-Antarctic sea urchins.

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Title: Gut microbiome plasticity and host resistance in response to ocean warming in sub-Antarctic sea urchins.
Authors: Schwob, Guillaume, Delleuze, Mélanie, Motreuil, Sébastien, Marschal, Christian, Saucède, Thomas, Orlando, Julieta, Poulin, Elie, Cabrol, Léa
Contributors: Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE) (BASE), Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Departamento de Ciencias Ecológicas, Universidad de Chile = University of Chile Santiago (UCHILE), Laboratoire de Biologie Marine (LBM), Université libre de Bruxelles (ULB), Biogéosciences UMR 6282 (BGS), École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Bourgogne Europe (UBE), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Funding for this work was provided by the Regular FONDECYT (grant#1211672) and the Millennium Science Initiative Program (Millennium InstituteBASE, grant #ICN2021_002) from the Chilean National Agency of Researchand Innovation (ANID). Field access facilities to the Kerguelen Islands weresupported by the French Polar Institute-IPEV (program No. 1044 PROTEKER).
Source: ISSN: 1741-7007.
Publisher Information: CCSD
BioMed Central
Publication Year: 2025
Collection: HAL Lyon 1 (University Claude Bernard Lyon 1)
Subject Terms: Global climate change, Host microbiome, Sea urchins, Seawater warming, Sub-Antarctic ecosystem, Thermal tolerance, MESH: Animals, MESH: Gastrointestinal Microbiome, MESH: Temperature, MESH: Climate Change, MESH: Sea Urchins, MESH: Antarctic Regions, MESH: RNA, Ribosomal, 16S, MESH: Seawater, MESH: Acclimatization, MESH: Global Warming, MESH: Oceans and Seas, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology
Description: International audience ; Sub-Antarctic marine ecosystems are highly vulnerable to climate change, with rising ocean temperatures threatening key benthic species. Abatus cordatus, an endemic sea urchin of the Kerguelen Islands with limited dispersal capacity, has been hypothesised to possess a narrow thermal niche, which would render it particularly susceptible to environmental shifts. However, microbiome-mediated acclimation may provide a potential mechanism of resilience to ocean warming. To test these hypotheses, this study evaluates host survival and gut microbiome responses of A. cordatus to medium-term seawater warming under near-future temperature scenarios using 16S rRNA gene sequencing to compare these changes with those observed in sediment microbiomes.
Document Type: article in journal/newspaper
Language: English
Relation: info:eu-repo/semantics/altIdentifier/pmid/41254590; PUBMED: 41254590
DOI: 10.1186/s12915-025-02448-9
Availability: https://ube.hal.science/hal-05375211
https://ube.hal.science/hal-05375211v1/document
https://ube.hal.science/hal-05375211v1/file/s12915-025-02448-9.pdf
https://doi.org/10.1186/s12915-025-02448-9
Rights: http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess
Accession Number: edsbas.E1062B3C
Database: BASE
Description
Abstract:International audience ; Sub-Antarctic marine ecosystems are highly vulnerable to climate change, with rising ocean temperatures threatening key benthic species. Abatus cordatus, an endemic sea urchin of the Kerguelen Islands with limited dispersal capacity, has been hypothesised to possess a narrow thermal niche, which would render it particularly susceptible to environmental shifts. However, microbiome-mediated acclimation may provide a potential mechanism of resilience to ocean warming. To test these hypotheses, this study evaluates host survival and gut microbiome responses of A. cordatus to medium-term seawater warming under near-future temperature scenarios using 16S rRNA gene sequencing to compare these changes with those observed in sediment microbiomes.
DOI:10.1186/s12915-025-02448-9