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61,005 resultsShowing papers similar to How Can Different Land Use Impact Aquatic Organisms? An Evaluation of Metabolic Alterations During Embryonic Development of Freshwater Fish, Rhamdia quelen
ClearImpact of Aquatic Pollution on Embryonic and Larval Development in Fish: A Comprehensive Review
This review examines how aquatic pollutants—heavy metals, pesticides, and microplastics—affect the embryonic and larval development of fish, detailing mechanisms of toxicity including disrupted organ formation, hormonal interference, and altered enzyme activity. The paper frames fish as early warning indicators of contamination given their sensitivity during development.
Incidence of Watershed Land Use on the Consumption of Meso and Microplastics by Fish Communities in Uruguayan Lowland Streams
Researchers found that fish in urbanized Uruguayan lowland streams ingested significantly more meso- and microplastics than fish in streams draining extensive ranching land, with 309 individuals from 29 species analyzed. The results link watershed land use intensity to plastic contamination levels in freshwater fish communities.
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.
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.
Presença e efeitos da poluição plástica em peixes marinhos e de água doce
This thesis (in Portuguese) investigates plastic contamination in freshwater and marine fish, examining physiological, functional, and ecological effects across multiple levels of biological organization, including food safety implications for human consumption. The author finds that the scientific community has made progress on understanding individual-level effects but that broader ecological impacts and ecosystem-level consequences remain underexplored. The work contributes important evidence that plastic pollution in fish poses intertwined risks for wildlife and the people who eat them.
Contamination of stream fish by plastic waste in the Brazilian Amazon
Researchers evaluated plastic contamination in small fish from Amazonian headwater streams in Brazil, finding widespread plastic pollution in these understudied tropical freshwater ecosystems and characterizing the shapes, sizes, and abundance of plastic items ingested.
Role of Environmental Pollution in Altering Reproductive Cycles in Freshwater Fishes
Not relevant to microplastics — this review examines how industrial chemicals, pharmaceuticals, heavy metals, and pesticides in freshwater ecosystems disrupt reproductive cycles in fish, covering hormonal imbalances and population effects from endocrine-disrupting chemicals broadly.
Avaliando 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.
Emerging contaminants, including microplastics, in surface waters : uses of watersheds and impacts on the environment
This thesis investigated emerging contaminants including microplastics in surface waters across different land use types in Brazil, examining how watershed activities influence contamination levels in rivers and streams.
Assessment of intake and effect of microplastics and its combination with metals in experimental (Daphnia magna) and environmental conditions (freshwater fish)
Researchers assessed the intake and effects of microplastics and their combination with metals using Daphnia magna as an experimental model and freshwater fish under environmental conditions, investigating how microplastics adsorb and transport harmful metals in freshwater systems.
Microplastics in aquatic communities of neotropical agroecosystems
Researchers surveyed streams running through agricultural areas in the Comandaí basin of Brazil to test whether macroinvertebrates and fish contained microplastics, and whether ecological traits or stream position predicted which organisms were most exposed. Both invertebrates and fish across diverse ecological roles were found to contain microplastics, suggesting that plastic pollution is pervasive throughout the food web in these farming-dominated waterways. This research expands our understanding of microplastic ingestion beyond well-studied coastal systems into inland freshwater ecosystems of the Global South.
Microplastics in wetlands: contrasting fish contamination between mangroves and temporary ponds in southeastern Brazil
Researchers compared microplastic contamination in annual and perennial killifish across mangroves and temporary ponds in coastal Brazil, finding that habitat type influenced contamination more than fish life history, with mangrove-dwelling fish showing higher loads.
Effects of microplastics on the accumulation and neurotoxicity of methylmercury in zebrafish larvae
Researchers found that microplastics can adsorb methylmercury and act as carriers, increasing its accumulation in zebrafish larvae and worsening neurotoxicity by disrupting locomotor activity and triggering oxidative stress.
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.
Microplastics in Limnic Ecosystems - Investigation of Biological Fate and Effects of Microplastic Particles and Associated Contaminants in Zebrafish (Danio rerio)-
This doctoral thesis investigated how microplastics and their associated chemical contaminants affect zebrafish (Danio rerio) in freshwater environments, including ingestion, tissue accumulation, and toxicological effects. The research demonstrates that microplastics can act as vectors for pollutants like pesticides and pharmaceuticals, compounding their harmful effects on aquatic organisms.
DETECTION OF TRICLOSAN POLLUTANTS ADSORBED ON POLYPROPYLENE MICROPLASTICS USING SIMPLE BIOMARKERS IN THE EMBRYOS OF Oryzias javanicus (BLEEKER, 1854)
Embryo biomarkers in Oryzias javanicus fish showed that polypropylene microplastics adsorbed with triclosan caused more developmental disruption than either contaminant alone, including altered somite number, heart rate, yolk absorption, hatching time, and body length.
Microplastic contamination in demersal and pelagic fish from two differently anthropized bays on the south coast of Rio de Janeiro, Brazil
Researchers investigated microplastic contamination in demersal and pelagic fish from two bays with differing levels of human impact on the south coast of Rio de Janeiro, Brazil. The study compared microplastic occurrence across fish species and sampling sites to assess how anthropisation influences microplastic exposure in coastal fish populations.
Impact of Heavy Metals and Pesticide Contamination on Aquatic Environment and Fish Health: Challenges and Bioremediation Strategies
This review examines the impact of heavy metals and pesticide contamination on aquatic environments and fish health, with attention to how microplastics interact with these traditional pollutants. The authors discuss how pollution from industrialization affects fish physiology and disrupts ecosystem balance. The study highlights bioremediation approaches as sustainable strategies for addressing contaminated aquatic environments.
Impact of Heavy Metals and Pesticide Contamination on Aquatic Environment and Fish Health: Challenges and Bioremediation Strategies
This review examines the impact of heavy metals and pesticide contamination on aquatic environments and fish health, including the role of microplastics as co-contaminants. The authors discuss how industrialization has increased pollutant levels in water systems, affecting fish physiology and ecosystem balance. The study highlights bioremediation strategies as promising approaches for cleaning up contaminated aquatic environments.
Microplastic in an Urbanized Estuary on the Brazilian Equatorial Margin: Analysis of Contamination in Commercially Intent Fish, Water and Sediment in the Anil River
Researchers analyzed microplastic contamination in fish, water, and sediment samples from the Anil River estuary on the Brazilian Equatorial Margin, focusing on commercially important fish species in an urbanized estuarine environment.
Exposure to Acute Concentration of Malathion Induced Behavioral, Hematological, and Biochemical Toxicities in the Brain of Labeo rohita
Researchers exposed Labeo rohita fish to acute concentrations of the pesticide malathion and measured toxic effects on blood chemistry and brain biochemistry. While this study focuses on pesticide toxicity rather than microplastics directly, it demonstrates how chemical pollutants found alongside microplastics in waterways can harm aquatic organisms. The findings showed significant disruption of brain enzymes and blood parameters, highlighting the vulnerability of commercially important fish to agricultural runoff.