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Bringer A, Thomas H, Prunier G, Dubillot E, Bossut N, Churlaud C, Clérandeau C, Le Bihanic F, Cachot J. High density polyethylene (HDPE) microplastics impair development and swimming activity of Pacific oyster D-larvae, Crassostrea gigas, depending on particle size. Environ Pollut 2020; 260:113978. [PMID: 31991353 DOI: 10.1016/j.envpol.2020.113978] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 05/26/2023]
Abstract
Understanding the effects of plastic debris on marine ecosystems is essential in encouraging decision-makers to take action. The present study investigates the effect of a 24 h experimental exposure to high density polyethylene (HDPE) microplastics (MPs) of different sizes (4-6, 11-13 and 20-25 μm) and at three concentrations (0.1, 1 and 10 mg MP.L-1) on the development and locomotor activity of early stages of Pacific oyster, Crassostrea gigas. The bivalve embryo-larval assay (NF ISO 17244, 2015) was used in this study but with additional toxicity criteria: developmental arrests, abnormal D-larvae, maximum speed and swimming trajectory. Copper (Cu), was used as a positive control. Our results show that smaller MPs (4-6 and 11-13 μm) induced higher rates of malformations and developmental arrests than the larger ones (20-25 μm). In addition, a dose-dependent decrease of maximum swimming speed was observed for larvae exposed to MPs of 4-6 and 11-13 μm. On the other hand, there was no significant difference in swimming speed with the largest MPs size tested (20-25 μm). For all three sizes of MPs, there was a decrease in straight-line swimming trajectories, and an increase in circular trajectories. This abnormal swimming behaviour could affect larvae survival as well as colonization of new habitats.
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Affiliation(s)
- Arno Bringer
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS - La Rochelle Université, 2 rue Olympe de Gouges, F-17042, La Rochelle Cedex 01, France
| | - Hélène Thomas
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS - La Rochelle Université, 2 rue Olympe de Gouges, F-17042, La Rochelle Cedex 01, France
| | - Grégoire Prunier
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS - La Rochelle Université, 2 rue Olympe de Gouges, F-17042, La Rochelle Cedex 01, France
| | - Emmanuel Dubillot
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS - La Rochelle Université, 2 rue Olympe de Gouges, F-17042, La Rochelle Cedex 01, France
| | - Noémie Bossut
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS - La Rochelle Université, 2 rue Olympe de Gouges, F-17042, La Rochelle Cedex 01, France
| | - Carine Churlaud
- Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS - La Rochelle Université, 2 rue Olympe de Gouges, F-17042, La Rochelle Cedex 01, France
| | - Christelle Clérandeau
- Université de Bordeaux, Laboratoire Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), UMR CNRS 5805, F-33600, Pessac, France
| | - Florane Le Bihanic
- Université de Bordeaux, Laboratoire Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), UMR CNRS 5805, F-33600, Pessac, France
| | - Jérôme Cachot
- Université de Bordeaux, Laboratoire Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), UMR CNRS 5805, F-33600, Pessac, France.
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