Realistic environmental exposure to microplastics does not induce biological effects in the Pacific oyster Crassostrea gigas - Normandie Université Accéder directement au contenu
Article Dans Une Revue Marine Pollution Bulletin Année : 2020

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

Messika Revel

Résumé

The aim of the present study was to evaluate the presence and potential toxic effects of plastic fragments (< 400 μm) of polyethylene and polypropylene on the Pacific oyster Crassostrea gigas. Oysters were exposed to environmentally relevant concentrations (0, 0.008, 10, 100 μg of particles/L) during 10 days, followed by a depuration period of 10 days in clean seawater. Effects of microplastics were evaluated on the clearance rate of organisms, 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 infrared microscopy were also conducted. Microplastics were detected in oyster's biodeposits following exposure to all tested concentrations: 0.003, 0.006 and 0.05 particles/mg of biodeposits in oysters exposed to 0.008, 10 and 100 μg of particles/L, respectively. No significant modulation of biological markers was measured in organisms exposed to microplastics in environmentally relevant conditions.
Fichier principal
Vignette du fichier
S0025326X19307751.pdf (1.41 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02482996 , version 1 (21-12-2021)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Messika Revel, Amélie Châtel, Hanane Perrein-Ettajani, Mélanie Bruneau, Farida Akcha, et al.. Realistic environmental exposure to microplastics does not induce biological effects in the Pacific oyster Crassostrea gigas. Marine Pollution Bulletin, 2020, ⟨10.1016/j.marpolbul.2019.110627⟩. ⟨hal-02482996⟩
224 Consultations
182 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More