Differential Acclimation of Juvenile Sea Urchins Transplanted Across a Metallic Trace Element Gradient within the Bay of Toulon (France)
| Autor: | Sylvain Couvray, Simone Richard, Cédric Garnier, Thomas Miard, Fanny Clergeaud, Nathalie Prévot d'Alvise, Sandrine Gaillard, Jean-Luc Bonnefont, Gaël Durrieu, Sébastien d'Onofrio, Stéphane Coupé |
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| Přispěvatelé: | 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), Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), PIERRE FABRE-EDF (EDF)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Processus de Transfert et d'Echanges dans l'Environnement - EA 3819 (PROTEE), Université de Toulon (UTLN), Ecologie Marine et BIOdiversité (EMBIO), 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)-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), Plateforme Technologique BioTechServices, Institut Océanographique Paul Ricard, Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Sentinel species Fauna DNA methyltransferase Aquatic Science acclimation 01 natural sciences Acclimatization Paracentrotus lividus stress Mediterranean sea [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Genomics [q-bio.GN] Biomonitoring [SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology 14. Life underwater metallic trace elements ComputingMilieux_MISCELLANEOUS biology Ecology 010604 marine biology & hydrobiology Paracentrotus lividus sea urchin 04 agricultural and veterinary sciences biology.organism_classification Transplantation 13. Climate action 040102 fisheries juveniles gene expression 0401 agriculture forestry and fisheries hsp [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDE.BE]Environmental Sciences/Biodiversity and Ecology Bay transplantation |
| Zdroj: | Journal of Shellfish Research Journal of Shellfish Research, 2020, 39 (1), pp.143-158. ⟨10.2983/035.039.0114⟩ Journal of Shellfish Research, National Shellfisheries Association, 2020, 39 (1), pp.143-158. ⟨10.2983/035.039.0114⟩ Journal of Shellfish Research, National Shellfisheries Association, 2020, 39 (1), pp.143. ⟨10.2983/035.039.0114⟩ |
| ISSN: | 0730-8000 |
| Popis: | International audience; Urbanized harbors and embayments scattered along marine shorelines act as important sources of a wide range of chemical contaminants, which include metallic trace elements (MTE). Within the semi-enclosed Mediterranean Sea, the high number of such areas might locally challenge the persistence of coastal marine species. In recent decades, biomonitoring studies, using sentinel species such as mussels, have increased knowledge of coastal contamination and provided a number of contentious potential environmental surveillance biomarkers, which contributed to a better comprehension toward the acclimation abilities of marine organisms, to actual anthropogenically derived environments. The aim of this study was to characterize the influence of the chemically, multi-contaminated, Bay of Toulon (France) on the young fauna, using juvenile sea urchins Paracentrotus lividus as a proxy. Hatchery-produced individuals were immersed, for 1 mo, within the bay, at four contrasted sites for MTE concentrations. At the end of the experiment, growth and transcript abundances of key genes, involved in the acclimation process, were assessed. Contrasted phenotypic and molecular responses were observed evidencing a significant environmental influence. Specifically, under the high metallic stress, a dwarfing response was observed, associated with a high level of metallothionein and a low level of hsp response. In addition, the level of DNA methyltransferase transcript abundance was inversely correlated with the level of MTE concentrations, highlighting that the chronic exposure to metallic contaminants would probably increase the risk of genetic mutations, such as those consecutive to transpositions. Overall, this study indicates that further in-depth research into the mechanisms driving plasticity and adaptive changes at the population level is required. |
| Databáze: | OpenAIRE |
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