Determining the Properties that Govern Selective Ingestion and Egestion of Microplastics by the Blue Mussel Mytilus edulis) and Eastern Oyster {Crassostrea virginica)

Kayla Mladinich; Bridget A. Holohan; Sandra E. Shumway

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Determining the Properties that Govern Selective Ingestion and Egestion of Microplastics by the Blue Mussel Mytilus edulis) and Eastern Oyster {Crassostrea virginica)

机译：Determining the Properties that Govern Selective Ingestion and Egestion of Microplastics by the Blue Mussel Mytilus edulis) and Eastern Oyster {Crassostrea virginica)

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Suspension feeding bivalve molluscs interact with different types of microplastics (MP) suspended in the water column. Most bivalves are selective suspension feeders and, thus, do not consume all particles to which they are exposed. Selection depends upon the physicochemical properties and size of the particle. Recent work has provided evidence that blue mussels, Mytilus edulis, and eastern oysters, Crassostrea virginica, ingest and egest microspheres (polystyrene) and microfibers (nylon) differently, but whether other factors, such as polymer type and shape, mediate selection have not been explored. To investigate these factors, mussels and oysters were offered similar sized nylon (Ny) and polyester (PES) microfibers or polyethylene (PE) and polystyrene (PS) microspheres, or different sized PES microfibers during a 2 h exposure. Feces and pseudofeces were collected separately and analyzed for MPs, and the data were used to develop a linear regression model for selection. Results demonstrated clear species-specific differences in the efficiency of particle selection. Both mussels and oysters, however, exhibited size-based rejection of PES microfibers, ingesting a higher proportion of shorter fibers than longer fibers. Polymer type did not impact selection of fibers or spheres. The relative size of particles (area and perimeter) was found to be the most important factor in predicting whether a MP will be rejected or ingested.

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《Environmental Science & Technology: ES&T》 |2022年第22期|15770-15779|共10页
作者
Kayla Mladinich; Bridget A. Holohan; Sandra E. Shumway;
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作者单位

Department of Marine Sciences, University of Connecticut, Groton, Connecticut 06340, United States;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
microplastics; mollusc; bivalve; suspension feeding; selection; bioindicator;

Determining the Properties that Govern Selective Ingestion and Egestion of Microplastics by the Blue Mussel Mytilus edulis) and Eastern Oyster {Crassostrea virginica)

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