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Beauvieux A, Fromentin JM, Romero D, Couffin N, Brown A, Metral L, Bourjea J, Bertile F, Schull Q. Molecular fingerprint of gilthead seabream physiology in response to pollutant mixtures in the wild. Environ Pollut 2024; 340:122789. [PMID: 37913978 DOI: 10.1016/j.envpol.2023.122789] [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: 08/01/2023] [Revised: 09/29/2023] [Accepted: 10/21/2023] [Indexed: 11/03/2023]
Abstract
The increase in trace element concentrations in the aquatic environment due to anthropogenic activities, urges the need for their monitoring and potential toxicity, persistence, bioaccumulation, and biomagnification at different trophic levels. Gilthead seabream is a species of commercial importance in the Mediterranean Sea, both for the aquaculture and fisheries sectors, however very little is known about their trace element contamination accumulation and the resulting effect on their health status. In the present study, 135 juveniles were collected from seven coastal lagoons known to be essential nursery areas for this species. We measured seventeen different inorganic contaminants at the individual level in fish muscle (namely Al, As, Be, Bi, Cd, Cr, Cu, Hg, Li, Ni, Pb, Rb, Sb, Sr, Ti, Tl and Zn). Our results revealed the accumulation of multiple trace elements in individuals and distinct contamination signatures between lagoons which might lead to contrasted quality as nurseries for juveniles of numerous ecologically and economically relevant fish species in addition to seabreams. We further evaluated the potential adverse effect of these complex contamination mixtures on the liver (the main organ implicated in the metabolism of xenobiotics) and red muscle (a highly metabolic organ) using a proteomic approach. Alterations in cellular organization pathways and protein transport were detected in both tissues (albeit they were not similarly regulated). Chromosome organization and telomere maintenance in the liver appeared to be affected by contaminant mixture which could increase mortality, age-related disease risk and shorter lifetime expectancy for these juveniles. Red muscle proteome also demonstrated an upregulation of pathways involved in metabolism in response to contamination which raises the issue of potential energy allocation trade-offs between the organisms' main functions such as reproduction and growth. This study provides new insights into the cellular and molecular responses of seabreams to environmental pollution and proposed biomarkers of health effects of trace elements that could serve as a starting point for larger-scale biomonitoring programs.
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Affiliation(s)
| | | | - Diego Romero
- Toxicology Department, Faculty of Veterinary Medicine, University of Murcia, 30100, Murcia, Spain
| | - Nathan Couffin
- Université de Strasbourg, CNRS, IPHC UMR 7178, 23 rue du Loess, 67037, Strasbourg Cedex 2, France; Infrastructure Nationale de Protéomique ProFI, FR2048 CNRS, CEA, Strasbourg, 67087, France
| | - Adrien Brown
- Université de Strasbourg, CNRS, IPHC UMR 7178, 23 rue du Loess, 67037, Strasbourg Cedex 2, France; Infrastructure Nationale de Protéomique ProFI, FR2048 CNRS, CEA, Strasbourg, 67087, France
| | - Luisa Metral
- MARBEC, Univ Montpellier, Ifremer, IRD, CNRS, Sète, France
| | - Jérôme Bourjea
- MARBEC, Univ Montpellier, Ifremer, IRD, CNRS, Sète, France
| | - Fabrice Bertile
- Université de Strasbourg, CNRS, IPHC UMR 7178, 23 rue du Loess, 67037, Strasbourg Cedex 2, France; Infrastructure Nationale de Protéomique ProFI, FR2048 CNRS, CEA, Strasbourg, 67087, France
| | - Quentin Schull
- MARBEC, Univ Montpellier, Ifremer, IRD, CNRS, Sète, France
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Prioux C, Tignat-Perrier R, Gervais O, Estaque T, Schull Q, Reynaud S, Béraud E, Mérigot B, Beauvieux A, Marcus MI, Richaume J, Bianchimani O, Cheminée A, Allemand D, Ferrier-Pagès C. Unveiling microbiome changes in Mediterranean octocorals during the 2022 marine heatwaves: quantifying key bacterial symbionts and potential pathogens. Microbiome 2023; 11:271. [PMID: 38053218 PMCID: PMC10696765 DOI: 10.1186/s40168-023-01711-x] [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: 07/21/2023] [Accepted: 10/27/2023] [Indexed: 12/07/2023]
Abstract
BACKGROUND Climate change has accelerated the occurrence and severity of heatwaves in the Mediterranean Sea and poses a significant threat to the octocoral species that form the foundation of marine animal forests (MAFs). As coral health intricately relies on the symbiotic relationships established between corals and microbial communities, our goal was to gain a deeper understanding of the role of bacteria in the observed tissue loss of key octocoral species following the unprecedented heatwaves in 2022. RESULTS Using amplicon sequencing and taxon-specific qPCR analyses, we unexpectedly found that the absolute abundance of the major bacterial symbionts, Spirochaetaceae (C. rubrum) and Endozoicomonas (P. clavata), remained, in most cases, unchanged between colonies with 0% and 90% tissue loss. These results suggest that the impairment of coral health was not due to the loss of the main bacterial symbionts. However, we observed a significant increase in the total abundance of bacterial opportunists, including putative pathogens such as Vibrio, which was not evident when only their relative abundance was considered. In addition, there was no clear relation between bacterial symbiont loss and the intensity of thermal stress, suggesting that factors other than temperature may have influenced the differential response of octocoral microbiomes at different sampling sites. CONCLUSIONS Our results indicate that tissue loss in octocorals is not directly caused by the decline of the main bacterial symbionts but by the proliferation of opportunistic and pathogenic bacteria. Our findings thus underscore the significance of considering both relative and absolute quantification approaches when evaluating the impact of stressors on coral microbiome as the relative quantification does not accurately depict the actual changes in the microbiome. Consequently, this research enhances our comprehension of the intricate interplay between host organisms, their microbiomes, and environmental stressors, while offering valuable insights into the ecological implications of heatwaves on marine animal forests. Video Abstract.
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Affiliation(s)
- Camille Prioux
- Collège Doctoral, Sorbonne Université, Paris, France
- Unité de Recherche sur la Biologie des Coraux Précieux CSM - CHANEL, Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC-98000 Monaco, Principality of Monaco
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | - Romie Tignat-Perrier
- Unité de Recherche sur la Biologie des Coraux Précieux CSM - CHANEL, Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC-98000 Monaco, Principality of Monaco
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | - Ophélie Gervais
- Unité de Recherche sur la Biologie des Coraux Précieux CSM - CHANEL, Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC-98000 Monaco, Principality of Monaco
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | - Tristan Estaque
- Septentrion Environnement, Campus Nature Provence, Marseille, 13008, France
| | - Quentin Schull
- MARBEC, Univ. Montpellier, CNRS, IFREMER, IRD, Sète, France
| | - Stéphanie Reynaud
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | - Eric Béraud
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | | | | | - Maria-Isabelle Marcus
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | - Justine Richaume
- Septentrion Environnement, Campus Nature Provence, Marseille, 13008, France
| | | | - Adrien Cheminée
- Septentrion Environnement, Campus Nature Provence, Marseille, 13008, France
| | - Denis Allemand
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco
| | - Christine Ferrier-Pagès
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, MC 98000, Principality of Monaco.
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Schull Q, Beauvieux A, Viblanc VA, Metral L, Leclerc L, Romero D, Pernet F, Quéré C, Derolez V, Munaron D, McKindsey CW, Saraux C, Bourjea J. An integrative perspective on fish health: Environmental and anthropogenic pathways affecting fish stress. Mar Pollut Bull 2023; 194:115318. [PMID: 37542925 DOI: 10.1016/j.marpolbul.2023.115318] [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: 04/11/2023] [Revised: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 08/07/2023]
Abstract
Multifactorial studies assessing the cumulative effects of natural and anthropogenic stressors on individual stress response are crucial to understand how organisms and populations cope with environmental change. We tested direct and indirect causal pathways through which environmental stressors affect the stress response of wild gilthead seabream in Mediterranean costal lagoons using an integrative PLS-PM approach. We integrated information on 10 environmental variables and 36 physiological variables into seven latent variables reflecting lagoons features and fish health. These variables concerned fish lipid reserves, somatic structure, inorganic contaminant loads, and individual trophic and stress response levels. This modelling approach allowed explaining 30 % of the variance within these 46 variables considered. More importantly, 54 % of fish stress response was explained by the dependent lagoon features, fish age, fish diet, fish reserve, fish structure and fish contaminant load latent variables included in our model. This integrative study sheds light on how individuals deal with contrasting environments and multiple ecological pressures.
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Affiliation(s)
- Quentin Schull
- MARBEC, Univ Montpellier, Ifremer, CNRS, IRD, Sète, France.
| | | | | | - Luisa Metral
- MARBEC, Univ Montpellier, Ifremer, CNRS, IRD, Sète, France
| | - Lina Leclerc
- MARBEC, Univ Montpellier, Ifremer, CNRS, IRD, Sète, France
| | - Diego Romero
- Área de Toxicología, Facultad de Veterinaria, Campus Regional de Excelencia Internacional Campus Mare Nostrum, Universidad de Murcia, Espinardo, 30071, Murcia, Spain
| | - Fabrice Pernet
- Ifremer/LEMAR UMR 6539, Technopole de Brest-Iroise, Plouzané, France
| | - Claudie Quéré
- Ifremer/LEMAR UMR 6539, Technopole de Brest-Iroise, Plouzané, France
| | | | | | | | - Claire Saraux
- MARBEC, Univ Montpellier, Ifremer, CNRS, IRD, Sète, France; Université de Strasbourg, CNRS, IPHC, UMR, 7178 Strasbourg, France
| | - Jerôme Bourjea
- MARBEC, Univ Montpellier, Ifremer, CNRS, IRD, Sète, France
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