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61,005 resultsShowing papers similar to Microplastic contamination in the gastrointestinal tracts of the Caucasian toad and its habitat at Karagöl Lake, Türkiye
ClearDistribution of microplastics in tadpoles, adults, and habitats of three water frogs of Pelophylax spp.
Researchers examined microplastics in water frogs and their habitats across Turkey, finding that while tadpoles showed almost no microplastic ingestion, 44% of adult frogs had microplastics in their digestive tracts — mostly fibers from synthetic textiles. The findings highlight how microplastic contamination increases with life stage and proximity to human activity, threatening amphibian populations already under environmental stress.
Microplastics Occurrence in the European Common Frog (Rana temporaria) from Cottian Alps (Northwest Italy)
Adult European common frogs (Rana temporaria) from high-mountain sites in the Cottian Alps of northwest Italy were found to contain plastic particles in their gastrointestinal tracts, representing one of the first records of microplastic ingestion in this species from an alpine ecosystem. The study demonstrates that plastic contamination has penetrated even remote mountain amphibian populations far from direct human plastic sources.
Microplastic contamination and ecological risk assessment in two tree frog species (Hyla orientalis and Hyla savignyi) across Türkiye
Researchers examined microplastic contamination in the gastrointestinal tracts of two tree frog species across 24 provinces in Turkiye. The study found 192 microplastic particles total, predominantly PET fibers, with significant geographic variation in contamination levels and microplastic characteristics, suggesting widespread environmental distribution of microplastic pollution across the region.
Spatiotemporal variation in the ingestion of microplastics in aquatic and terrestrial salamanders endemic to Türkiye
Researchers examined microplastic ingestion in both aquatic and land-dwelling salamander species across Turkey. They detected microplastics in about 34% of the 232 salamanders studied, with juvenile animals showing higher concentrations than adults, and fiber-shaped particles being most common. The study suggests that microplastic contamination affects amphibians regardless of whether they live in water or on land, indicating the pervasive reach of this pollution.
Spatiotemporal distribution of microplastics in true frogs (Ranidae:Pelophylax) populations from Türkiye
Researchers examined preserved frog stomach contents from 146 true frogs collected across Turkey and found microplastics in nearly 60% of individuals, with plastic fibers being the most common form. The findings show that frogs — which live both in water and on land — are useful indicators of microplastic contamination across multiple ecosystems, and that exposure has been occurring for decades.
Microplastic footprints in marsh frogs (Pelophylax ridibundus) from two Turkish lakes
Researchers examined microplastic contamination in marsh frogs and their habitats at two Turkish lakes with different levels of human activity. Microplastics were found in frog digestive tracts, water, and sediment at both locations, with fibers being the most common particle type. The lake near higher human activity showed greater contamination, suggesting that urbanization and human presence are significant drivers of freshwater microplastic pollution.
Microplastic prevalence in anatolian water frogs (Pelophylax spp.)
Researchers found microplastics in the tissues of anatolian water frogs (Pelophylax spp.) collected from freshwater habitats in Turkey, documenting prevalence and characteristics of plastic particles in these amphibians whose populations are already stressed by multiple environmental pressures.
Microplastics pollution in larvae of toads, frogs and newts in anthropopressure gradient
Researchers examined microplastic contamination in the larvae of toads, frogs, and newts across sites with varying levels of human activity in Poland. They found microplastics in larvae at all locations, with higher concentrations near urban and agricultural areas compared to natural habitats. The study raises concerns about how microplastic exposure during sensitive developmental stages may affect already-declining amphibian populations.
Microplastic contamination in high-altitude glacier lakes in Northern Anatolia
Researchers investigated microplastic contamination in eight high-altitude glacier lakes in northeastern Turkey and found plastic particles in both surface water and sediments at every site. The most common polymer types identified were polyethylene terephthalate and polyethylene, with concentrations varying significantly between lakes. The findings demonstrate that microplastic pollution has reached even remote mountain ecosystems far from major population centers.
Same genus, same burden: Microplastic pollution in banded newts
Researchers examined microplastic ingestion in three species of banded newts from freshwater habitats across Turkey and found plastic particles in 29-43% of individuals. PET fibers were the most common type detected, with no significant differences between species despite their different habitats. The consistent contamination levels across all three species suggest that microplastic pollution is widespread in freshwater environments and that these amphibians may serve as useful indicators of water quality.
Variation in microplastic characteristics among amphibian larvae: a comparative study across different species and the influence of human activity
Scientists examined microplastics inside amphibian larvae from 10 species and found plastic particles in all of them, with blue fibers being the most common type. Larger larvae tended to contain longer plastic fragments, and there was a relationship between human activity levels near habitats and the characteristics of the plastics found. This study shows that microplastic contamination has penetrated freshwater food webs, affecting animals during their most vulnerable developmental stages.
Microplastic Contamination in Three Amphibian Species: Implications for Amphibian Ecosystems
Researchers investigated microplastic contamination in tadpoles of three amphibian species collected from two Thai provinces, finding 26 microplastic particles — both fragments and fibers — across all species following hydrogen peroxide digestion and stereomicroscopic analysis. The banded bullfrog (Kaloula pulchra) carried the most particles (15), all fibers, indicating widespread environmental exposure even at early developmental stages.
Characterization of microplastic pollution in tadpoles living in small water-bodies from Rize, the northeast of Turkey
Researchers characterized microplastic pollution in tadpoles (Pelophylax ridibundus and Rana macrocnemis), sediments, and surface water from small water bodies in northeastern Turkey, finding MPs across all compartments with tadpole tissue containing 302.62-306.69 items per gram. PET, nylon, and polyacrylic were the dominant polymers in tadpoles, while PP and PE dominated sediments, highlighting microplastic transfer across freshwater and terrestrial habitats.
Hazard assessment of microplastics and heavy metals contamination in Levant frogs (Pelophylax bedriagae): A bioindicator in Western Iran
Scientists examined frogs from 16 locations in western Iran and found microplastics and heavy metals in their digestive tracts, confirming these animals are useful indicators of environmental contamination. Fibers were the most common microplastic type found, mainly from polyethylene and polypropylene. The study shows that microplastic pollution has reached freshwater habitats in Iran and is being ingested by amphibians that are part of broader food webs.
First record of microplastic contamination in adult endemic amazonian anuran species
For the first time, researchers documented microplastic contamination in two frog species found only in the Amazon, examining their digestive, respiratory, and skin systems. Both species had significant microplastic contamination, with the skin and digestive tract showing the highest levels. This study is important because it shows microplastics have reached even remote Amazonian ecosystems and are contaminating amphibians, which serve as indicators of overall environmental health.
Differential effects of microplastic exposure on anuran tadpoles: A still underrated threat to amphibian conservation?
Researchers found that microplastic exposure affects amphibian tadpoles differently depending on the species, with Italian agile frog tadpoles showing reduced survival at high concentrations while green toad tadpoles were more resilient.
Accumulation of Microplastics by the Siberian Wood Frog Rana amurensis (Anura, Amphibia) in the Western Baikal Region
Researchers examined microplastic accumulation in the Siberian wood frog (Rana amurensis), collecting animals from field sites and analyzing digestive tract contents for plastic particles. Microplastics were detected in frogs from all sampled locations, with fibres the most common type, indicating widespread environmental exposure of this amphibian to plastic contamination.
Microplastic Pollution at Different Trophic Levels of Freshwater Fish in a Variety of Türkiye`s Lakes and Dams
This study surveyed microplastic contamination in seven freshwater fish species from lakes and reservoirs across Türkiye, finding microplastic particles in the gastrointestinal tracts of all 406 fish examined. All ingested microplastics were fibres, predominantly blue in colour, suggesting textile sources. The broad geographic scope and 100% prevalence across species and water bodies indicate that microplastic contamination of freshwater fish is widespread throughout Türkiye, with implications for human exposure through fish consumption.
Microplastics in biotic and abiotic compartments of high-mountain lakes from Alps
Researchers surveyed microplastic pollution in two remote high-altitude lakes in the Italian Alps, finding plastic particles in lake sediments, tadpoles, and fish (but not in open water or zooplankton), with younger fish accumulating more microplastics than older ones — suggesting fish as useful pollution indicators even in pristine mountain environments.
Potential ecological risk of microplastics contamination to environment in protect area lakes
Researchers studied microplastic contamination in protected area lakes on the Qinghai-Tibetan Plateau and found that even these remote, supposedly pristine environments contain microplastics. The study compared protected lakes with those outside protected areas and found contamination levels varied by region and economic development. This shows that microplastic pollution reaches even the most isolated freshwater sources, which could affect drinking water quality for surrounding communities.
Presence of Microplastics in the Food Web of the Largest High-Elevation Lake in North America
Researchers investigated microplastic presence across three trophic levels of the freshwater food web in Lake Tahoe, North America's largest high-elevation lake, sampling water, amphibians, and fish to document microplastic transfer and accumulation through the aquatic food chain.
Micro- and Macroplastics Pollution in the Aquatic Environment of Markakol Lake Located in the Protected Area on the Mountain Slopes of the Southern Part of the Kazakh Altai Mountains
Researchers surveyed Markakol Lake — a protected, high-mountain lake in Kazakhstan's Altai region — and found micro- and macroplastics in every water sample taken from the lake and its tributaries, with microplastic concentrations reaching 520 µg/m³ in the lake itself. Even this remote, legally protected ecosystem is not spared from plastic pollution, with local fishing, transport, and waste disposal identified as the primary sources. The findings highlight that geographic isolation or conservation status does not shield freshwater bodies from contamination.
Alpine ponds as overlooked hotspots of microplastic hazards: Evidence from the Eastern Qinghai-Tibetan Plateau
Researchers surveyed microplastic contamination in alpine ponds on the Qinghai-Tibetan Plateau across zones of varying human activity, finding ubiquitous microplastic pollution (up to 594 items/L in water) that directly correlated with anthropogenic pressure, identifying high-altitude ponds as overlooked microplastic hotspots.
Microplastic assessment in remote and high mountain lakes of Gilgit Baltistan, Pakistan
Researchers assessed microplastic contamination in eight remote, high-altitude lakes in the mountains of northern Pakistan, finding plastic particles in both water and sediment at all locations. Despite the lakes being far from major population centers, microplastics were present at measurable levels, likely transported by wind and water from lower elevations. The contamination of these pristine mountain lakes is concerning because they serve as water sources for local communities.