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61,005 resultsShowing papers similar to Test feed development and methodological approaches allowing highly controlled dietary exposures to nano- and microparticulate contaminants in fish
ClearSampling, Isolating and Identifying Microplastics Ingested by Fish and Invertebrates *
This methodological review critically evaluated sampling, isolation, and identification techniques for microplastics ingested by fish and invertebrates, identifying common sources of error including contamination during processing, particle loss, and misidentification — and recommending standardized protocols.
Microplastics in aquatic food chain : sources, measurement, occurrence and potential health risks
This review examines the sources, measurement methods, occurrence, and potential health risks of microplastics throughout aquatic food chains, finding that while microplastics are ubiquitous in fish, shellfish, and other aquatic food sources, the data needed for a comprehensive human dietary exposure and risk assessment are not yet available. Researchers identify standardization of detection methods as a critical prerequisite for meaningful risk evaluation.
The transfer and resulting negative effects of nano- and micro-plastics through the aquatic trophic web—A discreet threat to human health
Researchers reviewed how micro- and nanoplastics move through aquatic food webs — from small organisms like plankton up through fish to humans — noting that while hundreds of species are known to ingest plastic particles, it remains difficult to distinguish particles eaten directly from those consumed indirectly through prey. The review highlights a critical gap in understanding how much plastic actually transfers between trophic levels and what that means for human health risks from seafood consumption.
Moving Toward Standardized Toxicity Testing Procedures with Particulates by Dietary Exposure of Gammarids
This paper discusses challenges in standardizing ecotoxicological testing for particulate materials and sparingly soluble substances, which behave differently from soluble chemicals in standard aquatic toxicity tests. It proposes dietary exposure approaches as a more realistic method for assessing microplastic toxicity to aquatic organisms.
Sampling, isolating and identifying microplastics ingested by fish and invertebrates
This study reviewed sampling and identification methods for microplastics ingested by fish and invertebrates, evaluating each approach for accuracy, reproducibility, and applicability to different species and sample types.
Micro-Nano Plastics in Aquatic Environments: Associated Health Impacts and Mitigation Strategies
This review examines how micro- and nanoplastics in aquatic environments are biologically transferred up the food chain, covering the factors that influence particle bioavailability, accumulation in organisms, and trophic transfer — with implications for both aquatic ecosystem health and human dietary exposure.
Evaluating Microplastic Pollution in Coastal Waters and Its Impact on Aquatic Food Webs
This study outlines a standardized methodology for investigating microplastic contamination across aquatic food webs, examining spatio-temporal variations in MP distribution across sediment, zooplankton, and demersal fish species. The authors emphasize that consistent sampling and laboratory protocols are essential for enabling cross-ecosystem comparisons and developing effective management solutions.
Micro(nano)plastics in the fish gastrointestinal tract: A mini review and relevance to One Health perspective
Researchers reviewed how microplastics and nanoplastics accumulate in fish digestive systems and enter the broader food web, highlighting that the fish gut acts as a critical pathway for these particles — and the chemicals stuck to them — to travel from the environment into the human food supply.
Uptake routes of microplastics in fishes: practical and theoretical approaches to test existing theories
This experimental study tested multiple proposed mechanisms by which fish ingest microplastics — including prey confusion, accidental ingestion, and trophic transfer — using controlled laboratory conditions, finding that feeding behavior type and prey size relative to particle size are key determining factors.
Microplastics in seafood: Benchmark protocol for their extraction and characterization
Researchers developed a benchmark protocol for extracting and characterizing microplastics from seafood samples, providing standardized methods to improve consistency and comparability across studies measuring human dietary exposure.
Effect of alternative natural diet on microplastic ingestion, functional responses and trophic transfer in a tri-trophic coastal pelagic food web
Researchers studied how microplastics move through a three-level marine food chain, from zooplankton prey to planktivorous fish, and how the availability of natural food affects microplastic ingestion. When natural food was scarce, organisms consumed more microplastics, and the particles transferred efficiently up the food chain. This study demonstrates that microplastics in the ocean can accumulate through the food web and reach fish species that humans commonly eat.
Trophic transfer of nanoplastics reduces larval survival of marine fish more than waterborne exposure
This study compared direct waterborne exposure versus trophic transfer of micro- and nanoplastics on marine fish larvae, finding that trophic transfer caused significantly higher larval mortality. The results suggest that dietary uptake through the food web is a more dangerous exposure route than direct water contact for early-stage fish.
Microplastics contamination in commercial fish meal and feed: a major concern in the cultured organisms
Researchers analyzed commercial fish meal and animal feed samples and found microplastics in all of them, with fish meal containing up to 1,154 particles per kilogram. The contaminated feed is given to farmed fish, shrimp, and chicken, creating a pathway for microplastics to reach humans through the food supply. Feed made from dried fish had higher contamination levels than feed from fresh fish, and the microplastics also carried toxic heavy metals.
The significance of trophic transfer of microplastics in the accumulation of plastic additives in fish: An experimental study using brominated flame retardants and UV stabilizers
Researchers found that trophic transfer through food is a more significant route than direct water exposure for fish accumulation of plastic-derived chemicals, including brominated flame retardants and UV stabilizers associated with microplastics.
Toward an Improved Understanding of the Ingestion and Trophic Transfer of Microplastic Particles: Critical Review and Implications for Future Research
A comprehensive review of over 800 species found that while microplastics are routinely found in the digestive tracts of aquatic organisms, they do not appear to bioaccumulate or biomagnify through food webs, with over 99% of observations locating particles in the gastrointestinal tract rather than tissues. The review calls for more standardized sampling and reporting to enable better temporal and spatial trend analysis.
Uptake, removal and trophic transfer of fluorescent polyethylene microplastics by freshwater model organisms: the impact of particle size and food availability
Researchers used fluorescent polyethylene microplastics of different sizes to track how they move through a freshwater food chain from algae to water fleas to zebrafish. They found that smaller particles were ingested and transferred more readily between organisms, and that food availability influenced how many microplastics accumulated. The study demonstrates that microplastics can move up the food chain and that particle size plays a key role in how they are transported through aquatic ecosystems.
Quality Criteria for the Analysis of Microplastic in Biota Samples: A Critical Review
Ten quality criteria were applied to review recent microplastic ingestion studies in aquatic biota, finding wide variation in methodological rigor including inadequate sample sizes, poor contamination controls, and inconsistent polymer identification methods. The authors propose a standardized quality assessment framework to improve comparability of microplastic ingestion data across studies.
Uptake and Transfer of Polyamide Microplastics in a Freshwater Mesocosm Study
A freshwater mesocosm study tracked the trophic and ontogenetic transfer of polyamide microplastics through an aquatic food web under near-natural conditions, confirming that particles were transferred between prey and predators at multiple levels. The results demonstrate that microplastic transfer through food webs occurs in realistic community settings, not just isolated laboratory tests.
Comprehending the complexity of microplastic organismal exposures and effects, to improve testing frameworks
This review argues that standard toxicity testing frameworks are poorly suited to capture the complexity of microplastic exposures in real environments, proposing improved testing approaches that account for particle mixtures, realistic concentrations, and species-specific feeding behaviors.
Trophic transfer and individual impact of nano-sized polystyrene in a four-species freshwater food chain
Researchers traced nano-sized polystyrene plastics through a four-species freshwater food chain — from algae to water fleas to two fish species — finding that nanoplastics transferred at each level and caused reduced activity, liver damage in fish, and penetration into fish embryos. The results highlight the broad ecological and health risks of nanoplastics moving up through aquatic food webs.
Trophic transfer of nanoplastics reduces larval survival of marine fish more than waterborne exposure
Researchers compared the effects of waterborne versus trophic (food chain) exposure to microplastics and nanoplastics on larvae of red sea bream and found that trophic transfer reduced larval survival more severely than direct waterborne exposure. The results underscore the importance of dietary exposure pathways in assessing nanoplastic risk to marine fish.
A taste of plastic - quantifying micro- and nanoplastic ingestion and interactions with feeding in daphnia magna (E)
This study developed quantitative methods for measuring microplastic and nanoplastic ingestion by freshwater organisms, applying them to mussels and other invertebrates. The analytical approach helps address a key gap in freshwater microplastic research, where most studies have been qualitative rather than quantitative in assessing organism exposure.
Trophic transfer of microplastics in aquatic ecosystems: Identifying critical research needs
This review analyzed the available literature on trophic transfer of microplastics in aquatic food webs, identifying key factors — particle size, shape, density, and organism feeding behavior — that determine whether microplastics pass through organisms or accumulate. The authors conclude that biomagnification of microplastics remains poorly understood and requires targeted research.
Microplastics assessment in Arabian Sea fishes: accumulation, characterization, and method development
Researchers assessed microplastic accumulation in Arabian Sea fish species, developing optimized digestion protocols and characterizing polymer types to trace contamination sources, finding widespread microplastic ingestion across multiple commercially important fish species.