Realistic environmental exposure to microplastics does not induce biological effects in the Pacific oyster Crassostrea gigas

TitreRealistic environmental exposure to microplastics does not induce biological effects in the Pacific oyster Crassostrea gigas
Type de publicationJournal Article
Year of Publication2020
AuteursRevel, M, Châtel, A, Perrein-Ettajani, H, Bruneau, M, Akcha, F, Sussarellu, R, Rouxel, J, Costil, K, Decottignies, P, Cognie, B, Lagarde, F, Mouneyrac, C
JournalMarine Pollution Bulletin
Volume150
Pagination110627
Date PublishedJan-01-2020
ISSN0025326X
Mots-clésbiodeposits, biomarkers, bivalves, Crassostrea gigas, microplastics
Résumé

The aim of the present study was to evaluate the presence and potential toxic effects of plastic fragments(< 400μm) of polyethylene and polypropylene on the Pacific oysterCrassostrea gigas.Oysters were exposed toenvironmentally relevant concentrations (0, 0.008, 10, 100μg of particles/L) during 10 days, followed by adepuration period of 10 days in clean seawater. Effects of microplastics were evaluated on the clearance rate oforganisms, tissue alteration, antioxidant defense, immune alteration and DNA damage. Detection and quanti-fication of microplastics in oyster's tissues (digestive gland, gills and other tissues) and biodeposits using infraredmicroscopy were also conducted. Microplastics were detected in oyster's biodeposits following exposure to alltested concentrations: 0.003, 0.006 and 0.05 particles/mg of biodeposits in oysters exposed to 0.008, 10 and100μg of particles/L, respectively. No significant modulation of biological markers was measured in organismsexposed to microplastics in environmentally relevant conditions.

URLhttps://linkinghub.elsevier.com/retrieve/pii/S0025326X19307751
DOI10.1016/j.marpolbul.2019.110627
Short TitleMarine Pollution Bulletin
Catégorie HCERES
ACL - Articles dans des revues à comité de lecture
Publication coopération et recherche SUD
Non