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61,005 resultsShowing papers similar to Ingestion and bioaccumulation of polystyrene nanoplastics and their effects on the microalgal feeding of Artemia franciscana
ClearThe uptake and elimination of polystyrene microplastics by the brine shrimp, Artemia parthenogenetica, and its impact on its feeding behavior and intestinal histology
Researchers studied the uptake, elimination, and intestinal effects of polystyrene microplastics on brine shrimp larvae. They found that the larvae ingested microplastics at rates dependent on concentration, exposure time, and food availability, and that the particles caused intestinal damage. The study demonstrates that microplastic contamination can harm the health and feeding behavior of zooplankton larvae, which are critical components of marine food webs.
Effects of ingested polystyrene microplastics on brine shrimp, Artemia parthenogenetica
Brine shrimp larvae (Artemia parthenogenetica) were exposed to 10 μm polystyrene microspheres at concentrations close to environmentally extrapolated levels, with microspheres clearly ingested and accumulated in the gut, resulting in reduced feeding rates and growth at higher concentrations. The study demonstrates that microplastic ingestion by brine shrimp, a widely used aquaculture feed organism, occurs at ecologically relevant concentrations and causes sublethal harm.
Impacts of nanoplastics on Artemia franciscana larvae: effects on growth and proteins responses
This laboratory study found that nanoplastic particles reduced growth and feeding rates in Artemia franciscana (brine shrimp) larvae in a dose-dependent manner. The results demonstrate that nanoplastics — the smallest and potentially most biologically active plastic particles — can harm early-life-stage marine crustaceans at environmentally relevant concentrations.
[Accumulation and Clearance of Polystyrene Microplastics in Brine Shrimp and the Responses of Microbiome and Metabolism].
Researchers exposed brine shrimp (Artemia salina) to polystyrene microplastics of different sizes and concentrations under varying nutritional conditions and analyzed microbiome and metabolic responses. Accumulation and clearance were concentration-dependent, while nutritional status modulated MP uptake; combined microbiome and metabolomics analysis revealed disruptions in microbial community composition and metabolic function.
Assessing the Biodistribution and Toxicity of Fluorescently Dyed Nano-Polystyrene in Artemia salina Nauplii
Researchers tracked the distribution and toxic effects of polystyrene nanoplastics in brine shrimp, a key model organism for ecotoxicology. They found that nanoplastics accumulated in the gut and, at higher concentrations, caused gut deformities, with the lethal concentration decreasing by nearly half between 24 and 48 hours of exposure. The findings suggest that nanoplastics may also impair the salt gland, affecting osmoregulation and energy allocation in marine organisms.
The Influence of Polystyrene Microspheres Abundance on Development and Feeding Behavior of Artemia salina (Linnaeus, 1758)
Researchers exposed brine shrimp larvae to polystyrene microspheres at various concentrations with and without a food source over seven days. They found that microplastic ingestion was dose-dependent and significantly influenced by food availability, with the highest contamination occurring when no food was present. The study suggests that microplastic pollution can disrupt feeding behavior and delay development in early life stages of marine organisms.
Comparative toxicity of polystyrene, polypropylene, and polyethylene nanoplastics on Artemia franciscana nauplii: a multidimensional assessment
Researchers compared the toxic effects of three common plastic types — polystyrene, polypropylene, and polyethylene — in nanoplastic form on brine shrimp larvae. They found that all three types caused harm, but polystyrene nanoplastics were the most toxic across multiple biological measures. The study provides the first direct comparison showing that the chemical composition of nanoplastics significantly influences their toxicity to aquatic organisms.
Nano-sized polystyrene affects feeding, behavior and physiology of brine shrimp Artemia franciscana larvae
Researchers exposed brine shrimp larvae to anionic and cationic polystyrene nanoparticles and found sub-lethal but significant effects: anionic particles packed guts and limited feeding, while positively charged particles adhered to sensory appendages, impaired movement, and triggered repeated molting as a possible expulsion defense.
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.
Sublethal Effects of Polystyrene Nanoplastics on the Embryonic Development of Artemia salina (Linnaeus, 1758)
Researchers exposed brine shrimp embryos to amino-modified polystyrene nanoplastics of two sizes and assessed a range of developmental effects. They found that the nanoplastics accumulated in the organisms and caused sublethal effects including altered hatching rates and developmental abnormalities, even at non-lethal concentrations. The study suggests that nanoplastic pollution may pose risks to the early development of organisms at the base of aquatic food chains.
Long-term toxicity of surface-charged polystyrene nanoplastics to marine planktonic species Dunaliella tertiolecta and Artemia franciscana
Researchers conducted long-term toxicity tests of positively and negatively charged polystyrene nanoparticles on marine microalgae and brine shrimp, finding that surface chemistry was the decisive factor: cationic (amino-modified) nanoparticles caused algal growth inhibition and shrimp mortality at microgram-per-liter concentrations, while anionic (carboxylated) particles accumulated and transferred trophically without acute lethality.
Time-dependent effects of polystyrene nanoparticles in brine shrimp Artemia franciscana at physiological, biochemical and molecular levels
Researchers tracked short- and long-term effects of cationic polystyrene nanoplastics on brine shrimp Artemia, finding that even low concentrations impair growth, trigger cumulative oxidative stress leading to lipid peroxidation, inhibit neural and developmental enzymes including cholinesterase and carboxylesterase, and alter gene expression governing molting and cell protection.
Exposure to polystyrene nanoplastics induces apoptosis, autophagy, histopathological damage, and intestinal microbiota dysbiosis of the Pacific whiteleg shrimp (Litopenaeus vannamei)
Exposing Pacific white shrimp to nanoplastics caused intestinal damage, cell death, disrupted immune function, and increased the abundance of harmful gut bacteria. Higher concentrations of nanoplastics led to more severe effects, including visible damage to the intestinal lining and formation of autophagosomes (cellular waste structures). These findings add to growing evidence that nanoplastic contamination in seafood farming can compromise the health of organisms that many people eat.
Size-dependent toxicological effects of polystyrene microplastics in the shrimp Litopenaeus vannamei using a histomorphology, microbiome, and metabolic approach
Researchers exposed white leg shrimp to polystyrene microplastics of four different sizes and found that toxicity was strongly size-dependent, with smaller particles causing greater tissue damage to guts and gills. Smaller microplastics were also more readily ingested and bioavailable to the shrimp. However, larger particles triggered different responses in gut microbiome diversity and metabolic pathways, indicating that microplastic size influences the type and severity of biological effects.
Toxicological effects of polystyrene nanoplastics on marine organisms
Researchers exposed Pacific white shrimp to polystyrene nanoplastics at various concentrations and measured immune, antioxidant, and tissue responses after seven days. They found that nanoplastic exposure disrupted immune function, increased oxidative stress, and caused tissue damage, particularly in the hepatopancreas and gills. The study adds to growing evidence that nanoplastics can harm the health of commercially important marine species.
Polystyrene Microplastic Interferes with Yolk Reserve Utilisation in Early Artemia salina Nauplii
Researchers exposed brine shrimp (Artemia salina) nauplii to polystyrene microplastics and found reduced hatching rates, slower growth, and signs of oxidative stress. Histological analysis revealed that the microplastics interfered with yolk reserve utilization, delaying resorption and impairing gut function in the developing larvae. The study suggests that microplastic exposure during early development can disrupt nutrient absorption critical for growth in aquatic organisms.
Behavioural, physiological and molecular responses of the Antarctic fairy shrimp Branchinecta gaini (Daday, 1910) to polystyrene nanoplastics
Researchers exposed Antarctic fairy shrimp — a species isolated in pristine polar freshwater lakes — to polystyrene nanoplastics and found that amino-functionalized particles caused increased moulting, gut epithelium damage, altered ventilation behavior, and upregulation of stress response genes, suggesting nanoplastics could threaten unique Antarctic freshwater biodiversity.
Toxicity evaluation of polypropylene microplastic on marine microcrustacean Artemia salina: An analysis of implications and vulnerability
Researchers prepared polypropylene microplastics and tested their toxic effects on the marine crustacean Artemia salina at different life stages. They found that the particles accumulated in the organisms' digestive tracts and caused significant mortality, particularly in the earliest developmental stages. The study demonstrates that polypropylene microplastics pose a real threat to small marine organisms that form the base of ocean food webs.
Effects of polystyrene microbeads in marine planktonic crustaceans
Researchers exposed barnacle larvae and brine shrimp to polystyrene microbeads at various concentrations and measured effects on survival, swimming behavior, and enzyme activity. While the microplastics accumulated in both species without causing mortality, high concentrations significantly altered swimming speed and cholinesterase enzyme activity. The study suggests that sublethal effects of microplastics on behavior and neurological function may be more ecologically relevant than direct mortality in marine crustaceans.
Polystyrene microplastics induce molecular toxicity in Simocephalus vetulus: A transcriptome and intestinal microorganism analysis
Researchers exposed a freshwater crustacean to polystyrene nanoplastics and found widespread molecular-level damage, including oxidative stress, disrupted energy metabolism, and signs of neurotoxicity. The nanoplastics also significantly altered the animals' gut microbiome, increasing harmful bacteria and weakening intestinal barrier function. The study provides a detailed picture of how plastic pollution can affect freshwater organisms at the cellular and genetic level.
Polystyrene Microparticles and the Functional Traits of Invertebrates: A Case Study on Freshwater Shrimp Neocardina heteropoda
Researchers exposed freshwater shrimp to polystyrene microplastics and found measurable changes in behavioral and physiological functional traits, contributing evidence that microplastic pollution poses risks to freshwater invertebrate communities beyond the marine environments typically studied.
Effects of polymethylmethacrylate nanoplastics on the swimming behaviour and gut microbiome of the freshwater amphipod Gammarus pulex
Researchers exposed freshwater amphipods (Gammarus pulex) to polymethylmethacrylate nanoplastics and assessed effects on swimming behavior and gut microbiome composition. They found that nanoplastic exposure altered the animals' movement patterns and shifted the microbial communities in their digestive systems. The study suggests that even nanoscale plastic particles can affect the behavior and internal biology of important freshwater invertebrates.
Effects of microplastics and nanoplastics in shrimp: Mechanisms of plastic particle and contaminant distribution and subsequent effects after uptake
This review summarizes how microplastics and nanoplastics affect shrimp, which are an important food source for humans. The tiny plastic particles can carry harmful chemicals and pathogens into shrimp tissue, which then move up the food chain when people eat contaminated seafood. The findings highlight concerns about plastic pollution in aquaculture and its indirect effects on human health through the food we eat.
Impact of Nanoplastics on the Functional Profile of Microalgae Species Used as Food Supplements: Insights from Comparative In Vitro and Ex Vivo Digestion Studies
Researchers assessed how polystyrene and polyethylene nanoplastics affect microalgae species used as food supplements, both before and after simulated digestion. The study found that nanoplastics persisted through the digestion process, altered particle behavior in the microalgae medium, and significantly increased total phenolic content, raising concerns about food safety when plastic contamination occurs.