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      From plastics to microplastics and organisms

      review-article
      1 , 2 ,
      FEBS Open Bio
      John Wiley and Sons Inc.
      degradation, fish, marine environment, microplastics, mussels

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          Abstract

          The amount of plastic waste and microplastics released into marine environments has increased rapidly in recent decades. The durability of plastic materials results in major problems following their release into the environment. This study provides an overview of recent findings on issues related to plastic degradation, the accumulation of microplastics in mussels and fishes, and the toxicological effects associated with the ingestion of microplastics. These findings confirm the serious problem of slowly degrading plastics (which rarely degrade fully) in natural marine environments. Microplastics have become widespread pollutants and have been detected in mussels and fish around the world. Microplastic particles, whether virgin or with adsorbed pollutants on their surfaces, pose a health problem after being ingested by marine organisms. This paper ends by highlighting the need for certain improvements in studies of these phenomena.

          Abstract

          This study provides an overview of recent findings on the problem of microplastics in the marine environment. Microplastic pollution is a very widespread problem. Microplastics have been identified in different mussel and fish species. Many studies also emphasize the adverse toxic effects on marine organisms after the ingestion of microplastics.

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          Most cited references72

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          Microplastics as contaminants in the marine environment: a review.

          Since the mass production of plastics began in the 1940s, microplastic contamination of the marine environment has been a growing problem. Here, a review of the literature has been conducted with the following objectives: (1) to summarise the properties, nomenclature and sources of microplastics; (2) to discuss the routes by which microplastics enter the marine environment; (3) to evaluate the methods by which microplastics are detected in the marine environment; (4) to assess spatial and temporal trends of microplastic abundance; and (5) to discuss the environmental impact of microplastics. Microplastics are both abundant and widespread within the marine environment, found in their highest concentrations along coastlines and within mid-ocean gyres. Ingestion of microplastics has been demonstrated in a range of marine organisms, a process which may facilitate the transfer of chemical additives or hydrophobic waterborne pollutants to biota. We conclude by highlighting key future research areas for scientists and policymakers. Copyright © 2011 Elsevier Ltd. All rights reserved.
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            Low levels of microplastics (MP) in wild mussels indicate that MP ingestion by humans is minimal compared to exposure via household fibres fallout during a meal

            Microplastics (MPs) are the most numerous debris reported in marine environments and assessment of the amounts of MPs that accumulate in wild organisms is necessary for risk assessment. Our objective was to assess MP contamination in mussels collected around the coast of Scotland (UK) to identify characteristics of MPs and to evaluate risk of human exposure to MPs via ingestion of mussels. We deployed caged mussels (Mytilus edulis) in an urbanised estuary (Edinburgh, UK) to assess seasonal changes in plastic pollution, and collected mussels (Mytilus spp and subtidal Modiolus modiolus) from eight sampling stations around Scotland to enumerate MP types at different locations. We determined the potential exposure of humans to household dust fibres during a meal to compare with amounts of MPs present in edible mussels. The mean number of MPs in M. modiolus was 0.086 ± 0.031 (SE, n = 6)/g ww (3.5 ± 1.29 (SE) per mussel). In Mytilus spp, the mean number of MPs/g ww was 3.0 ± 0.9 (SE, n = 36) (3.2 ± 0.52 (SE) per mussel), but weight dependent. The visual accuracy of plastic fibres identification was estimated to be between 48 and 50%, using Nile Red staining and FT-IR methodologies, respectively, halving the observed amounts of MPs in wild mussels. We observed an allometric relationship between the number of MPs and the mussels wet weight. Our predictions of MPs ingestion by humans via consumption of mussels is 123 MP particles/y/capita in the UK and can go up to 4620 particles/y/capita in countries with a higher shellfish consumption. By comparison, the risk of plastic ingestion via mussel consumption is minimal when compared to fibre exposure during a meal via dust fallout in a household (13,731-68,415 particles/Y/capita).
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              Understanding the Fragmentation Pattern of Marine Plastic Debris

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                Author and article information

                Contributors
                oliver.bajt@nib.si
                Journal
                FEBS Open Bio
                FEBS Open Bio
                10.1002/(ISSN)2211-5463
                FEB4
                FEBS Open Bio
                John Wiley and Sons Inc. (Hoboken )
                2211-5463
                01 April 2021
                April 2021
                : 11
                : 4 , In the Limelight: Bioplastics ( doiID: 10.1002/feb4.v11.4 )
                : 954-966
                Affiliations
                [ 1 ] Marine Biology Station National Institute of Biology Piran Slovenia
                [ 2 ] Faculty of Maritime Studies and Transport University of Ljubljana Slovenia
                Author notes
                [*] [* ] Correspondence

                O. Bajt, Marine Biology Station, National Institute of Biology, Fornace 41, 6330 Piran, Slovenia

                Tel: +386 59 232910

                E‐mail: oliver.bajt@ 123456nib.si

                Author information
                https://orcid.org/0000-0002-3601-1305
                Article
                FEB413120
                10.1002/2211-5463.13120
                8016121
                33595903
                e123d192-431c-42c4-9f59-50e687e93b03
                © 2021 The Authors. FEBS Open Bio published by John Wiley & Sons Ltd on behalf of Federation of European Biochemical Societies.

                This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

                History
                : 22 February 2020
                : 12 October 2020
                : 16 February 2021
                Page count
                Figures: 2, Tables: 3, Pages: 13, Words: 9395
                Categories
                Review Article
                Review Articles
                Custom metadata
                2.0
                April 2021
                Converter:WILEY_ML3GV2_TO_JATSPMC version:6.0.1 mode:remove_FC converted:01.04.2021

                degradation,fish,marine environment,microplastics,mussels
                degradation, fish, marine environment, microplastics, mussels

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