Journal
MARINE POLLUTION BULLETIN
Volume 181, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2022.113843
Keywords
Plastic pollution; Mussels; Seafood; Human exposure; Catalonia (Spain)
Funding
- Secretaria d'Universitats i Recerca del Departament d'Empresa i Coneixement de la Generalitat de Catalunya [AGAUR 2018 FI_B 01029]
- European Union
- Juan de la Cierva-incorporacion program of the Spanish Ministerio de Ciencia, Innovacion y Universidades [IJC 2018-035126-I]
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This study investigated the concentration and composition of microplastics in mollusc species population on the Catalan coast, and estimated the amount and frequency of microplastic intake through the consumption of molluscs by the Catalan population. The results indicate that the consumption of molluscs is an important route of microplastic exposure for the Catalan population.
Microplastics (MPs) are accessible for organisms with active filter feeding strategies, as are many marine molluscs, which live attached or semi-buried in sediments. In the present study, MPs (from 0.02 to 5 mm) concentration, morphology, and composition were determined in consumed mollusc species of the Catalan coast (NW Mediterranean Sea). Microplastic concentrations, morphologic characteristics and composition were studied according to species, catchment zones and depuration condition. Finally, human intake of MPs through molluscs' consumption was determined. >2300 individuals were analysed, being 1460 MPs extracted and their size, and polymeric composition registered. Big oysters and mussels showed the highest MPs concentration by individual, with levels of 22.8 +/- 14.4 and 18.6 +/- 23.0 MPs/individual, respectively. Mean annual MPs (>= 20 mu m) consumption for adult population was estimated in 8103 MPs/year, with a 95th percentile of 19,418 MPs/year. It suggests that the consumption of molluscs is an important route of MPs exposure for the Catalan population.
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