Realistic environmental exposure to microplastics does not induce biological effects in the Pacific oyster Crassostrea gigas.
Biodeposits
Biomarkers
Bivalves
Crassostrea gigas
Microplastics
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Jan 2020
Jan 2020
Historique:
received:
20
06
2019
revised:
22
09
2019
accepted:
23
09
2019
pubmed:
28
10
2019
medline:
14
3
2020
entrez:
27
10
2019
Statut:
ppublish
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 quantification 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.
Identifiants
pubmed: 31655301
pii: S0025-326X(19)30775-1
doi: 10.1016/j.marpolbul.2019.110627
pii:
doi:
Substances chimiques
Microplastics
0
Plastics
0
Water Pollutants, Chemical
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
110627Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.