Oyster reproduction is affected by exposure to polystyrene microplastics

Type Article
Date 2016-03
Language English
Author(s) Sussarellu Rossana1, 4, Suquet Marc1, Thomas Yoann1, Lambert Christophe1, Fabioux Caroline1, Pernet Marie Eve JulieORCID1, Le Goic Nelly1, Quillien Virgile1, Mingant Christian1, Epelboin Yanouk1, Corporeau Charlotte1, Guyomarch Julien2, Robbens Johan3, Paul-Pont Ika1, Soudant Philippe1, Huvet ArnaudORCID1
Affiliation(s) 1 : CNRS, Inst Francais Rech Exploitat Mer, Inst Rech Dev, Lab Sci Environm Marin,UMR 6539 UBO, F-29280 Plouzane, France.
2 : Ctr Documentat Rech Experimentat, F-29218 Brest, France.
3 : Inst Poor Landbouw Visserijonderzoek, B-8400 Oostende, Belgium.
4 : Inst Francais Rech Exploitat Mer, Lab Ecotoxicol, Dept Biogeochem & Ecotoxicol, F-43110 Nantes, France.
Source Proceedings Of The National Academy Of Sciences Of The United States Of America (0027-8424) (Natl Acad Sciences), 2016-03 , Vol. 113 , N. 9 , P. 2430-2435
DOI 10.1073/pnas.1519019113
WOS© Times Cited 275
Keyword(s) microplastic, reproduction, energy allocation, oyster
Abstract Plastics are persistent synthetic polymers that accumulate as waste in the marine environment. Microplastic (MP) particles are derived from the breakdown of larger debris or can enter the environment as microscopic fragments. Because filter-feeder organisms ingest MP while feeding, they are likely to be impacted by MP pollution. To assess the impact of polystyrene microspheres (micro-PS) on the physiology of the Pacific oyster, adult oysters were experimentally exposed to virgin micro-PS (2 and 6 µm in diameter; 0.023 mg·L−1) for 2 mo during a reproductive cycle. Effects were investigated on ecophysiological parameters; cellular, transcriptomic, and proteomic responses; fecundity; and offspring development. Oysters preferentially ingested the 6-µm micro-PS over the 2-µm-diameter particles. Consumption of microalgae and absorption efficiency were significantly higher in exposed oysters, suggesting compensatory and physical effects on both digestive parameters. After 2 mo, exposed oysters had significant decreases in oocyte number (−38%), diameter (−5%), and sperm velocity (−23%). The D-larval yield and larval development of offspring derived from exposed parents decreased by 41% and 18%, respectively, compared with control offspring. Dynamic energy budget modeling, supported by transcriptomic profiles, suggested a significant shift of energy allocation from reproduction to structural growth, and elevated maintenance costs in exposed oysters, which is thought to be caused by interference with energy uptake. Molecular signatures of endocrine disruption were also revealed, but no endocrine disruptors were found in the biological samples. This study provides evidence that micro-PS cause feeding modifications and reproductive disruption in oysters, with significant impacts on offspring.
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Sussarellu Rossana, Suquet Marc, Thomas Yoann, Lambert Christophe, Fabioux Caroline, Pernet Marie Eve Julie, Le Goic Nelly, Quillien Virgile, Mingant Christian, Epelboin Yanouk, Corporeau Charlotte, Guyomarch Julien, Robbens Johan, Paul-Pont Ika, Soudant Philippe, Huvet Arnaud (2016). Oyster reproduction is affected by exposure to polystyrene microplastics. Proceedings Of The National Academy Of Sciences Of The United States Of America, 113(9), 2430-2435. Publisher's official version : https://doi.org/10.1073/pnas.1519019113 , Open Access version : https://archimer.ifremer.fr/doc/00311/42233/