Organic contaminants sorbed to microplastics affect marine medaka fish early life stages development. (May 2020)

• Record Type: Journal Article
• Authors: Le Bihanic, Florane; Clérandeau, Christelle; Cormier, Bettie; Crebassa, Jean-Claude; Keiter, Steffen H.; Beiras, Ricardo; Morin, Bénédicte; Bégout, Marie-Laure; Cousin, Xavier; Cachot, Jérôme
• Is Part Of: Marine pollution bulletin. Volume 154(2020)
• Publication Date: 2020-05
• Subjects: Marine medaka -- Microplastics -- Developmental toxicity -- Benzo(a)pyrene -- Perfluorooctanesulfonic acid -- Benzophenone-3; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2020.111059
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: The role of polyethylene microplastics 4–6 μm size (MPs) in the toxicity of environmental compounds to fish early life stages (ELS) was investigated. Marine medaka Oryzias melastigma embryos and larvae were exposed to suspended MPs spiked with three model contaminants: benzo(a)pyrene (MP-BaP), perfluorooctanesulfonic acid (MP-PFOS) and benzophenone-3 (MP-BP3) for 12 days. There was no evidence of MPs ingestion but MPs agglomerated on the surface of the chorion. Fish ELS exposed to virgin MPs did not show toxic effects. Exposure to MP-PFOS decreased embryonic survival and prevented hatching. Larvae exposed to MP-BaP or MP-BP3 exhibited reduced growth, increased developmental anomalies and abnormal behavior. Compared to equivalent waterborne concentrations, BaP and PFOS appeared to be more embryotoxic when spiked on MPs than when alone in seawater. These results suggest a relevant pollutant transfer by direct contact of MPs to fish ELS that should be included in the ecotoxicological risk assessment of MPs. Graphical abstract: Unlabelled Image Highlights: There was no evidence of microplastic ingestion. Marine medaka embryos were in direct contact to microplastics via their chorion. Aquatic contaminants spiked on microplastics induced acute and developmental toxicity.