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61,005 resultsShowing papers similar to Automated μFTIR Imaging Demonstrates Taxon-Specific and Selective Uptake of Microplastic by Freshwater Invertebrates
ClearAutomated μFTIR Imaging Demonstrates Variability in Microplastic Ingestion by Aquatic Insects in a Remote Taiwanese Mountain Stream
Researchers used focal plane array micro-FTIR spectroscopy to characterize microplastic ingestion in aquatic insects from a high-altitude stream (~2,000 m) in a Taiwanese national park. Microplastic ingestion was detected in nearly all insect taxa examined, with polyethylene (65%) dominating and most particles smaller than 500 µm, demonstrating that MP contamination reaches even remote, low-pollution environments.
Ingestion of microplastics and textile cellulose particles by some meiofaunal taxa of an urban stream
Researchers evaluated ingestion of microplastics and textile cellulose particles by five meiofaunal taxa and multiple functional feeding guilds in an urban first-order stream in Florence, Italy, using fluorescence microscopy and µFTIR, finding evidence of particle uptake across scrapers, deposit-feeders, predators, and various locomotion groups.
Microplastics accumulation in functional feeding guilds and functional habit groups of freshwater macrobenthic invertebrates: Novel insights in a riverine ecosystem
Microplastics were found across functional feeding groups and habitat types of freshwater macroinvertebrates in an Italian river, with collector-gatherers and sediment-dwelling species showing higher contamination, confirming that dietary and behavioral ecology shapes microplastic exposure patterns in invertebrate communities.
Microplastic loads within riverine fishes and macroinvertebrates are not predictable from ecological or morphological characteristics
Researchers measured microplastic loads in riverine fish and macroinvertebrates and found that particle counts were not reliably predicted by species ecology or morphology, suggesting that individual variation and local environmental factors play a larger role in microplastic ingestion than feeding guild or habitat alone.
Feeding type and development drive the ingestion of microplastics by freshwater invertebrates
Researchers exposed freshwater invertebrates with different feeding strategies to fluorescent polystyrene microplastics of various sizes and found that all species ingested particles in a concentration-dependent manner. Filter feeders like Daphnia magna consumed the most particles, while feeding type and developmental stage strongly influenced ingestion rates. The study suggests that feeding strategy is a key predictor of microplastic uptake in freshwater food webs, and that younger organisms may be more vulnerable.
Microplastics in the Ria Formosa Lagoon: Ingestion by marine invertebrates with different feeding traits and from different habitats
Researchers measured microplastic ingestion in four macroinvertebrate species from Portugal's Ria Formosa lagoon representing different trophic levels and feeding strategies, using KOH digestion and micro-FTIR identification of particles filtered on 5 µm silicon membranes. Microplastic type and amount varied significantly between species and locations, with elevated ethylene-propylene rubber concentrations near Faro airport suggesting habitat and behavior as key drivers of microplastic accumulation patterns.
Quantifying and classifying microplastics and microparticles across aquatic heterotrophs from headwater streams in central Pennsylvania
Researchers found microparticle contamination across multiple trophic levels in remote forested headwater streams in central Pennsylvania, with secondary consumers showing the highest contamination rates and µFTIR confirming true microplastics at two of five sampling sites.
Size-selective microplastic uptake by freshwater organisms: Fish, mussel, and zooplankton
Researchers assessed microplastic ingestion by organisms at different trophic levels in the polluted Susurluk River Basin in Turkey, including zooplankton, mussels, and fish. The study found that while no microplastic ingestion was observed in zooplankton, both mussels and fish contained microplastics, with size-selective uptake patterns varying across organism types.
Validation of an imaging FTIR spectroscopic method for analyzing microplastics ingestion by Finnish lake fish (Perca fluviatilis and Coregonus albula)
Researchers developed and validated an imaging FTIR spectroscopy method for identifying microplastics ingested by Finnish lake fish, including perch and vendace. The study confirmed that wild freshwater fish are ingesting microplastics and demonstrated that standardized analytical methods are needed to improve the reliability of microplastic detection in aquatic organisms.
Microplastic burden in marine benthic invertebrates depends on species traits and feeding ecology within biogeographical provinces
Researchers analyzed microplastic levels in the bodies of marine bottom-dwelling invertebrates across different ocean regions and found that the amount of microplastic ingested depended more on the animals' feeding strategies and body traits than on local pollution levels alone. Filter-feeding and deposit-feeding species accumulated the most particles. The study suggests that simply measuring environmental microplastic concentrations may not accurately predict how much wildlife in an area is actually ingesting.
Microplastic ingestion in marine mesozooplankton species associated with functional feeding traits
This study examined microplastic ingestion in marine mesozooplankton species with different functional traits, finding that feeding mode, body size, and habitat use are key predictors of plastic uptake across zooplankton communities.
Occurrence of Microplastics in the Sediments of an Irish River and Their Effects on Nematode Survival and Biodiversity
Researchers analyzed microplastic contamination in sediments from an Irish river and tested their effects on nematode survival and biodiversity. Using infrared spectroscopy, they characterized the types and concentrations of microplastics present, with particular concern about their ability to absorb persistent organic pollutants. The study found that microplastic exposure affected nematode populations, suggesting potential broader impacts on freshwater sediment ecosystems.
Feeding type affects microplastic ingestion in a coastal invertebrate community
Researchers exposed a coastal Baltic Sea invertebrate community — including mussels, crustaceans, and deposit feeders — to microplastic beads at three concentrations and found that feeding mode strongly determined ingestion rates, with filter-feeding bivalves accumulating significantly more particles than deposit feeders or free-swimming crustaceans.
Do different habits affect microplastics contents in organisms? A trait-based analysis on salt marsh species
Scientists measured microplastic occurrence in six benthic invertebrate species from salt marshes in northern Italy and the Netherlands, finding that species feeding habits, body size, and habitat use were better predictors of microplastic contamination than sampling location alone.
Biogenic Aggregation of Small Microplastics Alters Their Ingestion by a Common Freshwater Micro-Invertebrate
This study found that when small microplastics become incorporated into biogenic aggregates formed by aquatic organisms, they are more readily ingested by freshwater filter-feeding invertebrates than individual plastic particles alone. This mechanism suggests that microplastic uptake by freshwater zooplankton may be underestimated when biological aggregation is not accounted for.
Microplastics in freshwater sediments: Effects on benthic invertebrate communities and ecosystem functioning assessed in artificial streams
Researchers tested the effects of polyethylene microplastics on freshwater invertebrate communities in artificial streams using environmentally relevant concentrations. They found that microplastics significantly reduced the abundance of deposit-feeding and grazing organisms by 31-50%, with chironomids and mayflies showing the highest ingestion of plastic particles.
Mass spectrometry imaging enables detection of MPs and their effects in Daphnia magna following acute exposure
Researchers used an advanced imaging technique called mass spectrometry imaging to track where microplastics accumulate inside water fleas after short-term exposure. They found that the tiny organisms ingested microplastics that concentrated in their gut, and the exposure altered their lipid metabolism. The technique offers a new way to visualize exactly where microplastics end up in small aquatic organisms and what biochemical changes they cause.
A mechanistic and trait-based approach to investigating macroinvertebrates distribution and exposure to microplastics in riverine systems
This study took a mechanistic and trait-based approach to understand how macroinvertebrates are distributed across riverine hydraulic biotopes and how their biological traits relate to microplastic exposure. Organism traits tied to specific flow environments influence both microplastic encounter rates and ingestion risk, offering a framework for ecological microplastic risk assessment in rivers.
A novel, density-independent and FTIR-compatible approach for the rapid extraction of microplastics from aquatic sediments
Researchers developed a novel extraction method for microplastics from aquatic sediments that does not rely on density separation, making it compatible with FTIR spectroscopy without requiring additional processing steps. The approach could simplify and speed up microplastic analysis in environmental samples.
Evidence of small microplastics (<100 μm) ingestion by Pacific oysters (Crassostrea gigas): A novel method of extraction, purification, and analysis using Micro-FTIR
Researchers developed a novel extraction, purification, and micro-FTIR analysis method to detect small microplastics under 100 micrometers in Pacific oysters (Crassostrea gigas), confirming ingestion of these smaller particles and finding that existing methods routinely miss this size fraction due to inadequate tissue digestion protocols.
Looking for Nano- and Microplastics in Meiofauna Using Advanced Methodologies
This study developed new microscopy and spectroscopy methods to detect nano- and microplastics inside meiofauna — the tiny invertebrates (30–1000 µm) living at the bottom of marine and freshwater ecosystems. Because meiofauna are abundant and sit at the base of aquatic food webs, confirming their ingestion of plastic particles is important for understanding how microplastics enter and accumulate up the food chain.
Study of feeding biology and diet-associated microplastic contamination in selected creek fishes of northeastern Arabian Sea: A multi-species approach
Researchers studied the feeding biology and diet-associated microplastic contamination of selected fish species, finding that feeding habits directly influence the quantity and type of microplastics ingested. The results demonstrate that trophic position and prey preferences are key predictors of microplastic exposure in wild fish.
Microplastics affect assimilation efficiency in the freshwater amphipod Gammarus fossarum
Researchers examined how two types of microplastics affect the freshwater amphipod Gammarus fossarum. The study found that microplastic exposure reduced assimilation efficiency in these invertebrates, indicating that microplastic ingestion can interfere with nutrient uptake and energy processing in freshwater organisms.
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.