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The Effects of different concentrations of microplastics based on the feeding ability rate of oysters
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Researchers found that oysters exposed to microplastic concentrations above 5 mg/L showed significantly reduced feeding and filtration rates, with higher concentrations causing greater disruption, suggesting that microplastic pollution could impair the health and ecosystem function of commercially and ecologically important shellfish.
In order to explore the relationship between the feeding ability of oysters and microplastics, the changes in the feeding rate of oysters under different concentrations of microplastics can be studied in the laboratory. The results show that the four concentrations set in the experiment are above 5 mg It has a significant effect on the water filtration green and food intake rate of oysters, and the absorption rate and food intake rate decrease with the increase of microplastics concentration; when the concentration is 5mg \ L, the indicator is in a normal state. According to the research results, when the concentration is 5mg \ L, the feeding ability of oysters is ideal, which is suitable for the transformation and circulation of oysters in vivo.
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Physiological impacts of microplastics on the Pacific oyster Crassostrea gigas: The role of particle size and concentration
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Laboratory experiments on Pacific oysters exposed to microplastics of varying sizes and concentrations found decreased survival rates, increased oxygen consumption, and histological damage to digestive and gill tissues, with effects scaling with concentration. Oysters are global seafood staples and efficient bioaccumulators, meaning physiological damage at environmentally relevant concentrations translates directly into concerns about both aquatic ecosystem health and the safety of oysters in the human diet.
Microplastics Uptake and Egestion Dynamics in Pacific Oysters, Magallana Gigas (Thunberg, 1793), Under Controlled Conditions
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Researchers studied how Pacific oysters (Magallana gigas) ingest and egest microplastics under controlled conditions, finding that ingestion rates were rapid and dose-dependent while egestion was slower, resulting in temporary accumulation that increases the oysters' exposure to adsorbed pollutants and pathogens during the retention period.
Molecular and cellular effects of nano- and microplastics on oysters: a review
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Researchers reviewed the ecotoxicological effects of nano- and microplastics on oysters, finding that while high concentrations cause measurable physiological and cellular harm, there is a critical lack of studies at environmentally realistic exposure levels needed to accurately predict ecological consequences.
First assessment of microplastic concentrations in oysters, water and sediment in Laucala Bay, Fiji Islands
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Researchers conducted the first microplastic survey of oysters, water, and sediment in Fiji's Laucala Bay, finding microplastics in wild oysters and the surrounding water — with fibers, nylon, and latex among the most common types — providing baseline data for food safety and future Pacific aquaculture research.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.