First data on three bivalve species exposed to an intra-harbour polymetallic contamination (La Rochelle, France)

• Published in: Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
• Main Authors: Breitwieser, Marine, Viricel, Amélia, Churlaud, Carine, Guillot, Benoît, Martin, Elie, Stenger, Pierre-Louis, Huet, Valérie, Fontanaud, Angélique, Thomas-Guyon, Hélène
• Other Authors: LIttoral ENvironnement et Sociétés (LIENSs), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS), Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-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), Régie du Port de plaisance de le Rochelle
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2017
• Subjects: Heavy metals; Biomarkers; Marina areas; Diffuse pollution; DNA barcoding; Bivalve; Biomonitoring; [SDE]Environmental Sciences; Crassostrea gigas
• Online Access: https://univ-rochelle.hal.science/hal-01680279; https://univ-rochelle.hal.science/hal-01680279/document; https://univ-rochelle.hal.science/hal-01680279/file/Breitwieser%20et%20al.,%202017.pdf; https://doi.org/10.1016/j.cbpc.2017.02.006

International audience Evaluating diffuse sediment contamination in the environment is a major concern with the aim of reaching a good chemical and ecological state of the littoral zone. In this study the risks of chronic chemical contamination and consequences in the bivalves Crassostrea gigas, Mytilus sp. and Mimachlamys varia were evaluated in coastal environments. The objective here was to understand the anthropological phenomena that affect the functioning of the marina of La Rochelle (semi-closed environment). Harbours seeking ecomanagement accreditations (such as the international reference ISO 14001) constitute zones of interest to implement biomonitoring studies. The biological effects of chemical pollution in the Marina of La Rochelle were studied to develop a multi-biomarker biomonitoring approach on specific marine species of this site. Moreover, a genetic (DNA barcoding) approach was applied to validate the species identity of collected bivalves. Of the three species tested the scallop, M. varia, was the most sensitive to metal exposure.