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Trophic transfer of microplastics from copepods to planktivorous and their impacts
AI summary
This study developed and validated new methods for extracting microplastics from fish gastrointestinal tracts using chub mackerel (Scomber japonicus) as a model species. The optimized protocol using enzymatic digestion achieved higher recovery rates and less particle degradation compared to conventional chemical digestion methods.
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The Impact of Microplastics on Marine Copepods
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Marine copepods, a foundational link in ocean food webs, ingest microplastics alongside natural prey, causing reduced feeding, reproductive impairment, and energy depletion that can cascade up through fish, seabirds, and marine mammals. Because copepods transfer energy from phytoplankton to higher trophic levels, their contamination with microplastics poses systemic risks to entire marine food chains.
Ecotoxicological Effects of Microplastics in Marine Zooplankton
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Marine zooplankton ingest microplastics, mistaking them for food, which reduces feeding, impairs reproduction, and can transfer particles up the food chain. Because zooplankton form the base of marine food webs, their ecotoxicological responses to microplastics have cascading consequences for ocean ecosystems and human seafood consumers.
The Ecotoxicological Effects of Microplastics on Trophic Levels of Aquatic Ecosystems
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Microplastics accumulate toxic pollutants on their surfaces and are ingested by organisms across aquatic trophic levels, from zooplankton to fish, enabling biomagnification of co-contaminants through food webs. This ecotoxicological chain means that human consumption of seafood carries compounded chemical exposure risks from microplastic-associated pollutants.
Entry of Macro, Micro, and Nanoplastic in the Food Chain and Their Impact on Marine Life (from Source to Sink)
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Researchers traced how macro-, micro-, and nanoplastics enter and move through the marine food chain, from ocean surface contamination to ingestion by fish and shellfish, raising concerns about how plastic pollution ultimately reaches human diets through seafood consumption.
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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.