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Naudet J, d'Orbcastel ER, Bouvier T, Godreuil S, Dyall S, Bouvy S, Rieuvilleneuve F, Restrepo-Ortiz CX, Bettarel Y, Auguet JC. Identifying macroplastic pathobiomes and antibiotic resistance in a subtropical fish farm. Mar Pollut Bull 2023; 194:115267. [PMID: 37487429 DOI: 10.1016/j.marpolbul.2023.115267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/21/2023] [Accepted: 07/04/2023] [Indexed: 07/26/2023]
Abstract
Macroplastics are ubiquitous in aquaculture ecosystems. However, to date the potential role of plastics as a support for bacterial biofilm that can include potential human pathogenic bacteria (PHPB) and antibiotic-resistant bacteria (ARB) has been largely overlooked. In this study, we used a combination of metabarcoding and standard antibiotic susceptibility testing to study the pathobiome and resistome of macroplastics, fish guts and the environment in a marine aquaculture farm in Mauritius. Aquaculture macroplastics were found to be higher in PHPB, dominated by the Vibrionaceae family (0.34 % of the total community), compared with environmental samples. Moreover, isolates from aquaculture plastics showed higher significant multiple antibiotic resistance (MAR) compared to non-plastic samples of seawater, sediment and fish guts. These results suggest that plastics act as a reservoir and fomite of PHPB and ARB in aquaculture, potentially threatening the health of farmed fish and human consumers.
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Affiliation(s)
- Jeanne Naudet
- UMR MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France.
| | - Emmanuelle Roque d'Orbcastel
- UMR MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France; IOC, Indian Ocean Commission, Blue Tower, Rue de l'Institut, Ebène, Mauritius
| | - Thierry Bouvier
- UMR MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Sylvain Godreuil
- UMR MIVEGEC IRD-CNRS-Université de Montpellier, IRD, Montpellier, France
| | - Sabrina Dyall
- Molecular Life Sciences Pole of Research Excellence, Department of Biosciences and Ocean Studies, Faculty of Science, University of Mauritius, Réduit 80837, Mauritius
| | - Simon Bouvy
- Ferme Marine de Mahébourg Ltd. Royal Road, Pointe aux Feuilles, Mauritius
| | | | | | - Yvan Bettarel
- UMR MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
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Gadoin E, Desnues C, d'Orbcastel ER, Bouvier T, Auguet JC, Dagorn L, Moroh JL, Adingra A, Bettarel Y. Fishing for the Microbiome of Tropical Tuna. Microb Ecol 2022:10.1007/s00248-022-02096-4. [PMID: 35962839 DOI: 10.1007/s00248-022-02096-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Although tunas represent a significant part of the global fish economy and a major nutritional resource worldwide, their microbiome still remains poorly documented. Here, we conducted an analysis of the taxonomic composition of the bacterial communities inhabiting the gut, skin, and liver of two most consumed tropical tuna species (skipjack and yellowfin), from individuals caught in the Atlantic and Indian oceans. We hypothesized that each organ harbors a specific microbial assemblage whose composition might vary according to different biotic (sex, species) and/or abiotic (environmental) factors. Our results revealed that the composition of the tuna microbiome was totally independent of fish sex, regardless of the species and ocean considered. Instead, the main determinants of observed diversity were (i) tuna species for the gut and (ii) sampling site for the skin mucus layer and (iii) a combination of both parameters for the liver. Interestingly, 4.5% of all amplicon sequence variants (ASV) were shared by the three organs, highlighting the presence of a core-microbiota whose most abundant representatives belonged to the genera Mycoplasma, Cutibacterium, and Photobacterium. Our study also revealed the presence of a unique and diversified bacterial assemblage within the tuna liver, comprising a substantial proportion of potential histamine-producing bacteria, well known for their pathogenicity and their contribution to fish poisoning cases. These results indicate that this organ is an unexplored microbial niche whose role in the health of both the host and consumers remains to be elucidated.
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Affiliation(s)
- Elsa Gadoin
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon - Bat 24, 34095, Montpellier, France
| | - Christelle Desnues
- Institut Méditerranéen d'Océanologie (MIO), Aix-Marseille Université, Université de Toulon, CNRS, Campus Technologique Et Scientifique de Luminy, 163 avenue de Luminy - Bat. Méditerranée, 13288, Marseille, IRD, France
| | - Emmanuelle Roque d'Orbcastel
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon - Bat 24, 34095, Montpellier, France
| | - Thierry Bouvier
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon - Bat 24, 34095, Montpellier, France
| | - Jean-Christophe Auguet
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon - Bat 24, 34095, Montpellier, France
| | - Laurent Dagorn
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon - Bat 24, 34095, Montpellier, France
| | - Jean-Luc Moroh
- Université Peleforo Gbon Coulibaly, Korhogo, Ivory Coast
| | - Antoinette Adingra
- Centre de Recherches Océanologiques (CRO) - 29 rue des pêcheurs, Zone 3, Treichville, BP V 18 00225, Abidjan, Ivory Coast
| | - Yvan Bettarel
- MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon - Bat 24, 34095, Montpellier, France.
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Richard M, Rolland JL, Gueguen Y, de Lorgeril J, Pouzadoux J, Mostajir B, Bec B, Mas S, Parin D, Le Gall P, Mortreux S, Fiandrino A, Lagarde F, Messiaen G, Fortune M, Roque d'Orbcastel E. In situ characterisation of pathogen dynamics during a Pacific oyster mortality syndrome episode. Mar Environ Res 2021; 165:105251. [PMID: 33548594 DOI: 10.1016/j.marenvres.2020.105251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 12/17/2020] [Accepted: 12/26/2020] [Indexed: 06/12/2023]
Abstract
Significant mortality of Crassostrea gigas juveniles is observed systematically every year worldwide. Pacific Oyster Mortality Syndrome (POMS) is caused by Ostreid Herpesvirus 1 (OsHV-1) infection leading to immune suppression, followed by bacteraemia caused by a consortium of opportunistic bacteria. Using an in-situ approach and pelagic chambers, our aim in this study was to identify pathogen dynamics in oyster flesh and in the water column during the course of a mortality episode in the Mediterranean Thau lagoon (France). OsHV-1 concentrations in oyster flesh increased before the first clinical symptoms of the disease appeared, reached maximum concentrations during the moribund phase and the mortality peak. The structure of the bacterial community associated with oyster flesh changed in favour of bacterial genera previously associated with oyster mortality including Vibrio, Arcobacter, Psychrobium, and Psychrilyobacter. During the oyster mortality episode, releases of OsHV-1 and opportunistic bacteria were observed, in succession, in the water surrounding the oyster lanterns. These releases may favour the spread of disease within oyster farms and potentially impact other marine species, thereby reducing marine biodiversity in shellfish farming areas.
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Affiliation(s)
- Marion Richard
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France.
| | - Jean Luc Rolland
- IHPE, Univ Montpellier, CNRS, Ifremer, UPVD, Montpellier, France
| | - Yannick Gueguen
- IHPE, Univ Montpellier, CNRS, Ifremer, UPVD, Montpellier, France
| | - Julien de Lorgeril
- IHPE, Univ Montpellier, CNRS, Ifremer, UPVD, Montpellier, France; Ifremer, IRD, Univ Nouvelle-Calédonie, Univ La Réunion, ENTROPIE, F-98800 Nouméa, Nouvelle-Calédonie, France
| | | | - Behzad Mostajir
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Béatrice Bec
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Sébastien Mas
- OSU-OREME, Univ Montpellier, CNRS, IRD, IRSTEA, Sète, France
| | - David Parin
- OSU-OREME, Univ Montpellier, CNRS, IRD, IRSTEA, Sète, France
| | - Patrik Le Gall
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
| | - Serge Mortreux
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
| | | | - Franck Lagarde
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
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