The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters
Bivalve filter feeders, such as oysters, filter large volumes of water and are particularly exposed to microplastics (MP). Consequently, these animals digest and assimilate high levels of MP in their bodies that may likely impact their physiology, and potentially affect shellfish stocks, benthic hab...
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ftpubmed:oai:pubmedcentral.nih.gov:6938840 2023-05-15T15:58:46+02:00 The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters Thomas, Maes Jon, Barry Craig, Stenton Edward, Roberts Ruth, Hicks John, Bignell Dick, Vethaak A. Heather, Leslie A. Matthew, Sanders 2019-12-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6938840/ http://www.ncbi.nlm.nih.gov/pubmed/31909270 https://doi.org/10.1016/j.heliyon.2019.e03103 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6938840/ http://www.ncbi.nlm.nih.gov/pubmed/31909270 http://dx.doi.org/10.1016/j.heliyon.2019.e03103 © 2019 The Author(s) Article Text 2019 ftpubmed https://doi.org/10.1016/j.heliyon.2019.e03103 2020-01-12T01:24:29Z Bivalve filter feeders, such as oysters, filter large volumes of water and are particularly exposed to microplastics (MP). Consequently, these animals digest and assimilate high levels of MP in their bodies that may likely impact their physiology, and potentially affect shellfish stocks, benthic habitats and, indirectly, the health status of the marine ecosystem and human consumers. In this study we exposed juvenile oysters, Crassostrea gigas, to 3 different MP concentrations (10(4), 10(5) and 10(6) particles L(−1)), represented by 6μm Polystyrene (PS) microbeads, compared to a control treatment receiving no MP. The study ran for a period of 80 days to test for the impacts of MP on growth, Condition Index and Lysosomal Stability. From histological analysis, microbeads were detected in the intestines of exposed oysters and in the digestive tubules, but no cellular inflammatory features were observed over time. Weight and shell length remained comparable between the different treatments and control. We found that Condition Index in the highest concentration increased initially but significantly reduced over time. The oysters in the highest MP exposure also showed the lowest mean Lysosomal Stability score throughout the experiment. Lysosomes play a vital role in the cells defense mechanisms and breakdown of constituents, crucial for the oysters’ wellbeing. Most importantly, we detected an increased mortality in those oysters who were chronically exposed to the highest loads of MP. Text Crassostrea gigas PubMed Central (PMC) Heliyon 6 1 e03103 |
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Article Thomas, Maes Jon, Barry Craig, Stenton Edward, Roberts Ruth, Hicks John, Bignell Dick, Vethaak A. Heather, Leslie A. Matthew, Sanders The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
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Article |
description |
Bivalve filter feeders, such as oysters, filter large volumes of water and are particularly exposed to microplastics (MP). Consequently, these animals digest and assimilate high levels of MP in their bodies that may likely impact their physiology, and potentially affect shellfish stocks, benthic habitats and, indirectly, the health status of the marine ecosystem and human consumers. In this study we exposed juvenile oysters, Crassostrea gigas, to 3 different MP concentrations (10(4), 10(5) and 10(6) particles L(−1)), represented by 6μm Polystyrene (PS) microbeads, compared to a control treatment receiving no MP. The study ran for a period of 80 days to test for the impacts of MP on growth, Condition Index and Lysosomal Stability. From histological analysis, microbeads were detected in the intestines of exposed oysters and in the digestive tubules, but no cellular inflammatory features were observed over time. Weight and shell length remained comparable between the different treatments and control. We found that Condition Index in the highest concentration increased initially but significantly reduced over time. The oysters in the highest MP exposure also showed the lowest mean Lysosomal Stability score throughout the experiment. Lysosomes play a vital role in the cells defense mechanisms and breakdown of constituents, crucial for the oysters’ wellbeing. Most importantly, we detected an increased mortality in those oysters who were chronically exposed to the highest loads of MP. |
format |
Text |
author |
Thomas, Maes Jon, Barry Craig, Stenton Edward, Roberts Ruth, Hicks John, Bignell Dick, Vethaak A. Heather, Leslie A. Matthew, Sanders |
author_facet |
Thomas, Maes Jon, Barry Craig, Stenton Edward, Roberts Ruth, Hicks John, Bignell Dick, Vethaak A. Heather, Leslie A. Matthew, Sanders |
author_sort |
Thomas, Maes |
title |
The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
title_short |
The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
title_full |
The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
title_fullStr |
The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
title_full_unstemmed |
The world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
title_sort |
world is your oyster: low-dose, long-term microplastic exposure of juvenile oysters |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6938840/ http://www.ncbi.nlm.nih.gov/pubmed/31909270 https://doi.org/10.1016/j.heliyon.2019.e03103 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6938840/ http://www.ncbi.nlm.nih.gov/pubmed/31909270 http://dx.doi.org/10.1016/j.heliyon.2019.e03103 |
op_rights |
© 2019 The Author(s) |
op_doi |
https://doi.org/10.1016/j.heliyon.2019.e03103 |
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e03103 |
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