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Oyster reproduction is affected by exposure to polystyrene microplastics

Proceedings of the National Academy of Sciences - PNAS, 2016-03, Vol.113 (9), p.2430-2435 [Peer Reviewed Journal]

Volumes 1–89 and 106–113, copyright as a collective work only; author(s) retains copyright to individual articles ;Copyright National Academy of Sciences Mar 1, 2016 ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0027-8424 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.1519019113 ;PMID: 26831072

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Title:
Oyster reproduction is affected by exposure to polystyrene microplastics
Author: Sussarellu, Rossana ; Suquet, Marc ; Thomas, Yoann ; Lambert, Christophe ; Fabioux, Caroline ; Pernet, Marie Eve Julie ; Le Goïc, Nelly ; Quillien, Virgile ; Mingant, Christian ; Epelboin, Yanouk ; Corporeau, Charlotte ; Guyomarch, Julien ; Robbens, Johan ; Paul-Pont, Ika ; Soudant, Philippe ; Huvet, Arnaud
Subjects: Animals ; Biodiversity and Ecology ; Biological Sciences ; Environmental Sciences ; Oceans ; Ostreidae - genetics ; Ostreidae - metabolism ; Ostreidae - physiology ; Oysters ; Plastics ; Plastics - pharmacology ; Polystyrene ; Polystyrenes - pharmacology ; Proteome ; Reproduction - drug effects ; Transcriptome
Is Part Of: Proceedings of the National Academy of Sciences - PNAS, 2016-03, Vol.113 (9), p.2430-2435
Description: 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.
Publisher: United States: National Academy of Sciences
Language: English
Identifier: ISSN: 0027-8424
EISSN: 1091-6490
DOI: 10.1073/pnas.1519019113
PMID: 26831072
Source: GFMER Free Medical Journals
MEDLINE
PubMed Central

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Oyster reproduction is affected by exposure to polystyrene microplastics

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