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Papers
61,005 resultsShowing papers similar to Descrição e fatores modeladores da dieta e ecologia da alimentação de girinos neotropicais: Um estudo de caso e uma revisão abrangente
ClearAvaliando a poluição plástica em ecossistemas brasileiros: um estudo integrado da poluição em organismos e ambientes.
Researchers examined plastic ingestion by freshwater fish across 23 species in the Upper Parana River floodplain in Brazil, finding that nine species ingested plastics and that seasonality significantly influenced ingestion rates, with the highest levels recorded during dry season. The study also synthesized trends and gaps in Brazilian plastic pollution research, linking plastic contamination patterns to fishing activities, domestic waste, and anthropogenic pressures in aquatic ecosystems.
Diet composition of a native fish species in a neotropical lentic environment
This study characterized the diet and feeding habits of Hoplosternum littorale, a native South American armored catfish, in neotropical lentic environments. Understanding the trophic ecology of native fish species helps establish ecological baselines for monitoring how pollution, including microplastics, may affect food web dynamics.
Forrageando no Antropoceno: explorando as dinâmicas de reservatórios e poluição plástica em organismos de água doce.
This systematic review examines how reservoir construction and plastic pollution affect freshwater organisms. It highlights that microplastic contamination in freshwater ecosystems threatens the organisms that make up food chains, with potential consequences for the safety of drinking water and freshwater food sources.
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.
Ecological traits do not predict the uptake of microplastics by fishes in a Neotropical River
Researchers found that ecological traits such as feeding guild, habitat use, and body size do not reliably predict microplastic uptake in fish species from a Neotropical river, suggesting contamination patterns are driven more by local environmental conditions than by species-specific biology.
Ingestão e efeitos morfofisiológicos dos microplásticos em espécies de peixes da Amazônia Central
This Brazilian thesis investigates microplastic ingestion and its effects on fish from the Amazon basin, one of the world's most biodiverse freshwater systems. Given that aquatic organisms in even remote areas are exposed to microplastics, the research highlights risks to Amazon fish diversity and the potential for microplastics to disrupt aquatic food webs in previously pristine ecosystems.
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.
Glitter ingestion by bromeliad-dwelling macroinvertebrates: implications for freshwater microplastic contamination
Researchers exposed macroinvertebrates living in bromeliad leaf reservoirs to glitter particles as a microplastic proxy, finding ingestion occurred across multiple taxa and that glitter persisted in the gut and environment longer than natural food particles.
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.
Does the trophic guild influence microplastic ingestion in nursery areas? A case study on a southwestern Atlantic mangrove-dominated estuary
Researchers analyzed microplastic ingestion in ten fish species from a mangrove-dominated estuary in Brazil's Tropical Atlantic, finding plastics in 61% of 145 specimens. Zooplanktivorous species ingested the most (averaging 2.33 MPs per individual), with polystyrene and polypropylene dominating.
Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin
Microplastics were found in the stomachs of multiple fish species in an urban Brazilian river, with ingestion rates linked to each species' feeding ecology. The findings confirm that microplastics have entered the freshwater food chain, raising concern about contamination reaching people who eat these fish.
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.
Accumulation of microplastics in tadpoles from different functional zones in Hangzhou Great Bay Area, China: Relation to growth stage and feeding habits
Researchers investigated microplastic accumulation in tadpoles across different functional zones in China's Hangzhou Great Bay Area, finding that microplastic uptake varies with growth stage, feeding habits, and the level of human activity in surrounding land-use zones.
Microplastics in fishes in amazon riverine beaches: Influence of feeding mode and distance to urban settlements
Researchers found microplastics in the digestive tracts of 29 fish species from Amazon riverine beaches, with contamination levels influenced by fish feeding mode and distance to urban settlements within a protected area.
Microplastics, Alien Species and Amphibian Male-specific Predation in River Otter Diet (lutra Lutra). a Study of Two Populations in the Ticino Valley (north Italy) and Sila Massif (south Italy).
Researchers studied otter diet and distribution in two Italian rivers and found evidence that otters are consuming prey contaminated with microplastics and invasive species. The study highlights how predators at the top of freshwater food chains can accumulate plastic pollution through their diet.
Occurrence of microplastics in the gastrointestinal tract of Amazonian fish species with different feeding habits
Microplastics were found in the gastrointestinal tracts of multiple Amazonian fish species with different feeding habits from Lake Janauacá and the Anavilhanas Archipelago, with feeding strategy influencing ingestion rates—underscoring widespread microplastic contamination even in remote Amazon basin aquatic ecosystems.
Changes in the food selectivity of zooplanktivorous fishes related to the effects of nutrient enrichment in an urban tropical estuary
Researchers studied juvenile fish diets in an urban tropical estuary and found that nutrient enrichment from eutrophication shifted prey availability and fish feeding strategies, while all fish species examined contained microplastic particles and showed selective ingestion of them alongside their natural zooplankton prey.
Widespread microplastic ingestion by fish assemblages in tropical estuaries subjected to anthropogenic pressures
A survey of 2,233 fish from 69 species across two tropical Brazilian estuaries found microplastics in 9% of individuals, with ingestion rates linked to feeding guild, habitat use, and proximity to urban areas. The study demonstrates that microplastic ingestion is widespread even in tropical systems and is shaped by ecology rather than occurring at random.
Micro(nano)plastics as an emerging risk factor to the health of amphibian: A scientometric and systematic review
Only 12 studies have examined microplastic effects on amphibians, concentrated in Brazil and China and limited mostly to the Anura order; lab-tested concentrations were far from environmentally relevant levels, leaving significant knowledge gaps about mechanisms of toxicity in this vertebrate group.