PMID- 34198086 OWN - NLM STAT- MEDLINE DCOM- 20210906 LR - 20210906 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 794 DP - 2021 Nov 10 TI - Evidence of deleterious effects of microplastics from aquaculture materials on pediveliger larva settlement and oyster spat growth of Pacific oyster, Crassostrea gigas. PG - 148708 LID - S0048-9697(21)03780-3 [pii] LID - 10.1016/j.scitotenv.2021.148708 [doi] AB - Plastic is currently used in aquaculture as a material for settlement and magnification of oyster spats. Plastic weathering and fragmentation under natural conditions can lead to the production of micro and nanoparticles and additive leakage, with potential toxic effects on marine life. This study investigates the effects of the exposure to microplastic (MPs) cocktail derived from aged aquaculture material on oyster pediveliger larvae (Crassostrea gigas). The cocktail was made of high-density polyethylene (HDPE), polypropylene (PP) and polyvinyl chloride (PVC). The concentrations tested were 0, 0.1, and 10 mg MP.L(-1). During the 7-day fixation phase, pediveliger larvae (17 days) were exposed to the MP cocktail in laboratory-controlled conditions. After exposure, the success of settlement was significantly lower for larvae exposed to 10 mg MP.L(-1) (49 +/- 0.9%) compared to control ones (61.8 +/- 1.6%). No malformations or metamorphosis abnormalities were observed. Growth of pediveliger and spat stages was monitored up to 11 months. During the first twenty-eight days of development, spat growth was significantly lower for the two MPs exposure conditions (0.1 and 10 mg MP.L(-1); respectively -51.8% and -44.4%) compared to control group. Subsequently, the previously exposed oysters grew faster than the control condition, resulting in a significantly greater growth (0.1 and 10 mg MP.L(-1): +18.3% and +19.7%) than the control group at the end of follow-up. The nearly one-year follow-up highlighted the potential effects of MPs from aquaculture on larvae and spat of C. gigas. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Bringer, Arno AU - Bringer A AD - Littoral Environnement et Societes (LIENSs), UMR 7266, CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01, France. Electronic address: arno.bringer1@univ-lr.fr. FAU - Cachot, Jerome AU - Cachot J AD - Universite Bordeaux, CNRS, EPOC, EPHE, UMR 5805, F-33600 Pessac, France. FAU - Dubillot, Emmanuel AU - Dubillot E AD - Littoral Environnement et Societes (LIENSs), UMR 7266, CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01, France. FAU - Lalot, Benedicte AU - Lalot B AD - Littoral Environnement et Societes (LIENSs), UMR 7266, CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01, France. FAU - Thomas, Helene AU - Thomas H AD - Littoral Environnement et Societes (LIENSs), UMR 7266, CNRS-Universite de La Rochelle, 2 rue Olympe de Gouges, F-17042 La Rochelle Cedex 01, France. LA - eng PT - Journal Article DEP - 20210625 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Microplastics) RN - 0 (Plastics) SB - IM MH - Animals MH - Aquaculture MH - *Crassostrea MH - Larva MH - *Microplastics MH - Plastics/toxicity OTO - NOTNLM OT - Aged microplastics OT - Growth OT - Oyster OT - Pediveliger larvae OT - Settlement success OT - Spat COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/07/02 06:00 MHDA- 2021/09/07 06:00 CRDT- 2021/07/01 20:20 PHST- 2021/04/02 00:00 [received] PHST- 2021/06/03 00:00 [revised] PHST- 2021/06/23 00:00 [accepted] PHST- 2021/07/02 06:00 [pubmed] PHST- 2021/09/07 06:00 [medline] PHST- 2021/07/01 20:20 [entrez] AID - S0048-9697(21)03780-3 [pii] AID - 10.1016/j.scitotenv.2021.148708 [doi] PST - ppublish SO - Sci Total Environ. 2021 Nov 10;794:148708. doi: 10.1016/j.scitotenv.2021.148708. Epub 2021 Jun 25.