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Uptake and Retention of Microplastic Particles by Adult Grass Shrimp
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This is a duplicate entry of paper 79012, describing the same study on uptake and retention of microplastic particles by adult grass shrimp. Different types and sizes of plastic particles were ingested and retained in gut and gills, with clearance times measured during a 96-hour depuration period.
This study aimed to quantify the uptake and retention of microplastic particles in the gut and gills of adult daggerblade grass shrimp, Palaemonetes pugio. Polystyrene, polypropylene, and polyethylene microspheres were tested as well as polypropylene microfragments and polypropylene microfibers. Particle size fractions ranged from 30 microns to 165 microns. Grass shrimp were exposed to microplastic particles at a concentration of 20,000 particles/400 mL. Exposure was followed by a 96 hour depuration period, and the average clearance time (hr) was calculated.
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Uptake and Retention of Microplastic Particles by Adult Grass Shrimp
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This study measured how well adult grass shrimp ingested and retained different types of microplastic particles in their gut and gills. Shrimp readily took up microplastic spheres, fragments, and fibers across a range of sizes, and the research established clearance times that help understand how long plastics persist in these small crustaceans.
Field and laboratory microplastics uptake by a freshwater shrimp
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Both field surveys and laboratory experiments confirmed that freshwater shrimp readily take in microplastics, with wild shrimp averaging about 6 particles per individual and lab shrimp accumulating up to 20 particles in just six hours. Fibers made up 86% of the microplastics found in wild shrimp. Since these shrimp are part of the aquatic food web, their microplastic uptake means contamination can transfer to larger fish and ultimately to humans who consume freshwater species.
Transfer of POPs to Grass Shrimp Following Ingestion of PAH-Coated Microplastic
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This is a duplicate entry of paper 79013, describing the same study on fluoranthene transfer from PAH-coated microplastic to grass shrimp following ingestion. Researchers found that toxic PAH chemicals sorbed onto microplastics can transfer to marine crustaceans after ingestion.
Particle shape does not affect ingestion and egestion of microplastics by the freshwater shrimp Neocaridina palmata
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Ingestion and egestion of spherical, fragment, and fiber-shaped microplastics by the freshwater shrimp Neocaridina palmata showed similar rates across all three shapes, with particles retained in the gut for comparable durations regardless of morphology, suggesting that particle shape does not significantly modulate microplastic gut passage time in this crustacean.
Ingestion and adherence of microplastics by estuarine mysid shrimp
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Researchers investigated how estuarine mysid shrimp ingest and accumulate microplastics both internally and on their external body surfaces. The study found microplastics in the shrimp's bodies and fecal pellets, and feeding experiments revealed that these organisms readily consume plastic particles, raising concerns about microplastic transfer through marine food webs.
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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.