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61,005 resultsShowing papers similar to Microplastics ingestion induces plasticity in digestive morphology in larvae of Xenopus laevis
ClearMicroplastic pollution and amphibian health: Complex physiological effects of different microplastic types on juvenile Glandirana rugosa
Researchers studied how polypropylene and polyethylene microplastics affect juvenile frogs and found significantly higher mortality rates in microplastic-exposed groups. The frogs showed elevated stress hormones, signs of oxidative damage, and elongated intestines, suggesting their bodies were trying to adapt to the particles. The study highlights that microplastics pose both physical and chemical risks to amphibians, which may contribute to population declines.
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.
Uptake, accumulation and elimination of polystyrene microspheres in tadpoles of Xenopus tropicalis
Researchers exposed frog tadpoles to polystyrene microspheres and tracked uptake and elimination, finding that tadpoles readily ingested particles that accumulated in the gut and were gradually eliminated, with implications for amphibian exposure in plastic-contaminated ponds.
Life on both environment in semi-aquatic frogs: Impact of aquatic microplastic (MP) from MP enrichment to growth, immune function and physiological stress
Researchers exposed juvenile black-spotted pond frogs to different concentrations of microplastics in water to study effects after metamorphosis. They found that microplastics accumulated primarily in the digestive tract and caused reduced growth, increased stress markers, and weakened immune function at higher concentrations. The study suggests that microplastic pollution in freshwater habitats could pose significant health risks to amphibians during vulnerable life stages.
Life in plastic, it's not fantastic: Sublethal effects of polyethylene microplastics ingestion throughout amphibian metamorphosis
African clawed frogs exposed to polyethylene microplastics throughout metamorphosis showed sublethal effects including reduced body condition and altered development timing, raising concerns that microplastic pollution may threaten amphibian populations already facing global decline.
Microplastics altered cellular responses, physiology, behaviour, and regeneration of planarians feeding on contaminated prey
Researchers found that planarians feeding on microplastic-contaminated prey showed altered behavior, impaired physiology, and reduced regeneration capacity, demonstrating that microplastics can transfer through freshwater food chains and harm predatory invertebrates.
Ingestion of polyethylene terephthalate microplastic water contaminants by Xenopus laevis tadpoles negatively affects their resistance to ranavirus infection and antiviral immunity
Tadpoles exposed to PET microplastics, the type of plastic found in water bottles, accumulated the particles in their intestines, liver, and kidneys within days. Even at low concentrations, the microplastics weakened the tadpoles' immune defenses, making them significantly more vulnerable to viral infection. While this is an animal study, it raises concerns that microplastic exposure could similarly compromise immune function in other organisms, including humans.
Similarity of Microplastic Characteristics between Amphibian Larvae and Their Aquatic Environment
Researchers compared microplastic characteristics in amphibian larvae with those in their surrounding aquatic environment, finding similarities in size distribution and polymer types that confirm direct ingestion from water, providing a new bioindicator approach for freshwater microplastic monitoring.
Oral exposure to polyethylene microplastics exacerbates the effects of a Western-style diet on the digestive tract of adult male mice
Researchers investigated how oral exposure to polyethylene microplastics interacts with a Western-style diet to affect the digestive tract of mice over 90 days. The study found that microplastics exacerbated diet-related intestinal disruption, suggesting that dietary context plays an important role in determining the health impact of microplastic ingestion.
Unveiling the gut’s plastic predicament: How micro- and nano-plastics drive distinct toxicological pathways in Enchytraeus crypticus
Researchers exposed the soil invertebrate Enchytraeus crypticus to environmentally relevant concentrations of polystyrene microplastics (50 µm) and nanoplastics (100 nm), finding that nanoplastics caused greater gut microenvironment disruption and more severe biotoxicity than microplastics, acting through distinct mechanistic pathways.
Microplastic exposure across trophic levels: effects on the host–microbiota of freshwater organisms
Researchers examined how microplastic exposure across trophic levels affects the gut microbiota of freshwater organisms, finding that microplastics alter microbial community composition and that effects can transfer through food web interactions.
Immunological impacts of exposure to microplastic water contaminants during early development in Xenopus 2357
Researchers used Xenopus frogs—whose immune system parallels key human features—to study how early developmental microplastic exposure affects immune system development, finding disruption of both innate and adaptive immune components with potential relevance to human susceptibility to infection.
Life in plastic, it's not fantastic: Sublethal effects of polyethylene microplastics ingestion throughout amphibian metamorphosis
Researchers investigated the effects of polyethylene microplastic ingestion across amphibian metamorphosis in African clawed frogs, finding sublethal impacts on growth, development, and metabolic rate that were influenced by life stage and rearing temperature.
Ingestion of microplastics by silver carp (Hypophthalmichthys molitrix) larvae: Quantification of ingestion and assessment of microbiota dysbiosis
Researchers quantitatively investigated how silver carp larvae ingest, accumulate, and excrete microplastics of different sizes for the first time. The study found that smaller microplastics were ingested more readily and excreted quickly, while larger particles tended to accumulate in the intestine, and the presence of food increased uptake of large microplastics. The ingested microplastics also altered intestinal microflora diversity, potentially affecting immune and metabolic functions in the fish.
Exposure to microplastics impairs digestive performance, stimulates immune response and induces microbiota dysbiosis in the gut of juvenile guppy (Poecilia reticulata)
Researchers exposed juvenile guppies to polystyrene microplastics at two concentrations for 28 days and examined impacts on their digestive systems. The study found that microplastic exposure impaired digestive enzyme activity, stimulated intestinal immune responses, and disrupted the gut microbiota community, suggesting that microplastics can compromise intestinal health in freshwater fish.
Species-specific effects of long-term microplastic exposure on the population growth of nematodes, with a focus on microplastic ingestion
Scientists conducted long-term microplastic exposure experiments on freshwater nematode species and found species-specific effects on population growth, with ingestion rates and harm varying substantially across species despite identical exposure conditions.
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.
Microplastics impair amphibian survival, body condition and function
Tadpoles of the common midwife toad were exposed to polystyrene microspheres at varying concentrations in microcosms, with microplastics reducing feeding, impairing body condition, and showing dose-dependent ingestion of particles. The study provides rare evidence that microplastics harm amphibians, a group already facing global population declines.
Euryhaline fish larvae ingest more microplastic particles in seawater than in freshwater
Researchers found that euryhaline fish larvae ingested significantly more microplastic particles in seawater than in freshwater, likely due to physiological differences in drinking rates, with implications for understanding marine fish contamination.
Size matters either way: Differently-sized microplastics affect amphibian host and symbiotic microbiota discriminately
Researchers exposed toad tadpoles to two sizes of polystyrene microplastics and found both caused growth delays, but through different mechanisms. Larger particles disrupted gut bacteria, while smaller ones triggered stronger gene expression changes in tissues related to brain function and energy metabolism. The study suggests microplastic size matters for how toxicity manifests in amphibians.
Can short exposure to polyethylene microplastics change tadpoles’ behavior? A study conducted with neotropical tadpole species belonging to order anura (Physalaemus cuvieri)
Researchers exposed Physalaemus cuvieri tadpoles to polyethylene microplastics for 7 days and found altered locomotion behavior — reduced activity and increased erratic swimming — suggesting that short-term microplastic exposure can impair motor behavior in amphibians.
Effects of microplastics on growth and development of Rana latastei tadpoles: A mesocosm study
Mesocosm experiments exposing Rana latastei tadpoles to a mixture of PVC and HDPE microplastics found developmental delays and reduced survival, providing more ecologically realistic estimates of MP toxicity than laboratory-only studies.
Polystyrene microplastics did not affect body growth and swimming activity in Xenopus laevis tadpoles
Xenopus laevis tadpoles exposed to polystyrene microplastics at ecologically relevant concentrations showed no significant effects on body growth or swimming activity. The results suggest that short-term microplastic exposure may not impair basic performance in amphibian larvae, though longer-term or higher-dose effects remain to be investigated.
Influence of Microplastics on the Growth and the Intestinal Microbiota Composition of Brine Shrimp
Researchers exposed brine shrimp to polyethylene and polystyrene microplastics and found that both types significantly reduced growth rates, with body length decreasing by 15-18%. The study also revealed that microplastic ingestion altered the gut microbiota composition, increasing microbial diversity and shifting the balance of key bacterial groups in the shrimp intestines.