The fate of microplastics during uptake and depuration phases in a blue mussel exposure system

Rist, Sinja; Steensgaard, Ida M.; Güven, Olgaç; Nielsen, Torkel Gissel; Jensen, Lene H.; Møller, Lene Friis; Hartmann, Nanna B.

doi:10.1002/etc.4285

Cited by 49 publications

(23 citation statements)

References 30 publications

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“…Temporal differences identified in this study indicate oysters may be able to clear microplastics from their system over time, as previously shown in laboratory studies where manila clams and blue mussels (29-40 mm in length) eliminated microplastics in feces and pseudofeces when depurated in clean water, with up to 60% of particles cleared from the body in as little as 9 h (Xu et al 2017;Woods et al 2018). However, elimination of microplastics was not detected in blue mussels (50-55 mm length) during a depuration period of 2 h (Rist et al 2018). While, in these examples, depuration was studied in bivalves smaller than our study organisms (Supporting Information Appendix 1), the results are promising and warrant further research.…”

Section: Discussionmentioning

confidence: 61%

Microplastic Concentrations in Two Oregon Bivalve Species: Spatial, Temporal, and Species Variability

Baechler¹,

Granek²,

Hunter³

et al.

Environmental Science and Management Datasets

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Microplastics are an ecological stressor with implications for ecosystem and human health when present in seafood. We quantified microplastic types, concentrations, anatomical burdens, geographic distribution, and temporal differences in Pacific oysters (Crassostrea gigas) and Pacific razor clams (Siliqua patula) from 15 Oregon coast, U.S.A. sites. Microplastics were present in organisms from all sites. On average, whole oysters and razor clams contained 10.95 ± 0.77 and 8.84 ± 0.45 microplastic pieces per individual, or 0.35 ± 0.04 pieces g−1 tissue and 0.16 ± 0.02 pieces g−1 tissue, respectively. Contamination was quantified but not subtracted. Over 99% of microplastics were fibers. Material type was determined using Fourier‐transform infrared spectroscopy. Spring samples contained more microplastics than summer samples in oysters but not razor clams. Our study is the first to document microplastics in Pacific razor clams and provides important coast‐wide data to compare microplastic burden across species, seasons, and sites.

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Section: Discussionmentioning

confidence: 61%

Microplastic Concentrations in Two Oregon Bivalve Species: Spatial, Temporal, and Species Variability

Baechler¹,

Granek²,

Hunter³

et al.

Environmental Science and Management Datasets

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show abstract

“…Several digestive enzymes such as proteinase, trypsin, and collagenase have also been tested [ 19 , 110 , 117 , 118 , 119 ]. Because these enzymes are effective at moderate pH and redox conditions and specifically degrade proteins and other biological polymers that can be digested by organisms, damage from microplastics can be minimized.…”

Section: Resultsmentioning

confidence: 99%

“…However, these data are often based only on the final food item, not the ingredients, whereas microplastic concentration is usually evaluated for each ingredient. Preparation and cooking before consumption can significantly increase or decrease the actual microplastic concentrations in consumed foods [ 103 , 117 ]. Thus, a comparison of different analyses from food ingredients to final food items is necessary to mitigate human exposure to microplastics through food consumption.…”

Section: Discussionmentioning

confidence: 99%

Microplastics in Food: A Review on Analytical Methods and Challenges

Kwon

Kim

Pham

et al. 2020

IJERPH

126

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Human exposure to microplastics contained in food has become a significant concern owing to the increasing accumulation of microplastics in the environment. In this paper, we summarize the presence of microplastics in food and the analytical methods used for isolation and identification of microplastics. Although a large number of studies on seafood such as fish and shellfish exist, estimating the overall human exposure to microplastics via food consumption is difficult owing to the lack of studies on other food items. Analytical methods still need to be optimized for appropriate recovery of microplastics in various food matrices, rendering a quantitative comparison of different studies challenging. In addition, microplastics could be added or removed from ingredients during processing or cooking. Thus, research on processed food is crucial to estimate the contribution of food to overall human microplastic consumption and to mitigate this exposure in the future.

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“…In a future work this selection pattern regarding size, could be simulated by suitable preference weights among different MPs sizes. This will improve the knowledge of the feeding and excretion mechanisms used by the mussels against MPs pollution and the assessment of the ecological footprint (Rist et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Modelling mussel (<i>Mytilus</i> spp.) microplastic accumulation

Stamataki¹,

Hatzonikolakis²,

Tsiaras³

et al. 2020

Preprint

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Abstract. Microplastics (MPs) are a contaminant of growing concern due to their widespread distribution and interactions with marine species, such as filter feeders. To investigate the MPs accumulation by wild and cultured mussels, a Dynamic Energy Budget (DEB) model was developed and validated with the available field data of Mytilus edulis (wild) from the North Sea and Mytilus galloprovincialis (cultured) from the North Ionian Sea. Towards a generic DEB model, the site-specific model parameter, half saturation coefficient (Xk) was applied as a power function of food density for the cultured mussel, while for the wild it was calibrated to a constant value. The DEB-accumulation model simulated the uptake and excretion rate of MPs, taking into account environmental characteristics (temperature and chlorophyll-a). An accumulation of MPs equal to 0.64 particles individual−1 (fresh tissue mass 1.9 g) and 0.91 particles individual−1 (fresh tissue mass 3.4 g) was found for the wild and cultured mussel respectively, in agreement with the field data. The inverse experiments investigating the depuration time of the wild and cultured mussel in a clean from MPs environment showed a 90 % removal of MPs load after 3 and 14 days, respectively. Furthermore, sensitivity tests on model parameters and forcing functions highlighted that besides MPs concentration, the accumulation is highly depended on temperature and chlorophyll-a of the surrounding environment. For this reason, an empirical equation was found relating directly the concentration of MPs in seawater, with MPs accumulation in mussel’s soft tissue, temperature and chlorophyll-a.

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The fate of microplastics during uptake and depuration phases in a blue mussel exposure system

Cited by 49 publications

References 30 publications

Microplastic Concentrations in Two Oregon Bivalve Species: Spatial, Temporal, and Species Variability

Microplastic Concentrations in Two Oregon Bivalve Species: Spatial, Temporal, and Species Variability

Microplastics in Food: A Review on Analytical Methods and Challenges

Modelling mussel (<i>Mytilus</i> spp.) microplastic accumulation

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The fate of microplastics during uptake and depuration phases in a blue mussel exposure system

Cited by 49 publications

References 30 publications

Microplastic Concentrations in Two Oregon Bivalve Species: Spatial, Temporal, and Species Variability

Microplastic Concentrations in Two Oregon Bivalve Species: Spatial, Temporal, and Species Variability

Microplastics in Food: A Review on Analytical Methods and Challenges

Modelling mussel (&lt;i&gt;Mytilus&lt;/i&gt; spp.) microplastic accumulation

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Product

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Modelling mussel (<i>Mytilus</i> spp.) microplastic accumulation