We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effects of PS-MPs on growth, immunity, antioxidant capacity and amino acid metabolism in common carp ( Cyprinus carpio )
Summary
Researchers exposed common carp (Cyprinus carpio) to polystyrene microplastics at 0, 50, 100, and 200 micrograms per liter for 15 days, finding that higher concentrations significantly reduced weight gain rates and hepatopancreas somatic indices while impairing immunity, antioxidant capacity, and amino acid metabolism. The results demonstrate dose-dependent toxic effects of PS-MPs on fish physiology at environmentally relevant concentrations.
To explore the toxic effects of polystyrene microplastics (PS-MPs) on common carp ( Cyprinus carpio ), 0 µg/L, 50 µg/L, 100 µg/L, and 200 µg/L PS-MPs were designated as the control group (CK) and low, medium, and high concentration groups, respectively. Each group had 3 replicates and was exposed to PS-MPs for 15 days. The results showed that, compared with the control group, the weight gain rate and hepatopancreas somatic indices were significantly decreased in 100 and 200 μg/L PS-MPs groups, the visceral index was significantly decreased in 50 and 100 μg/L PS-MPs groups. In comparison to CK, experimental groups (50-200 µg/L PS-MPs) significantly decreased activity levels of acid phosphatase, alkaline phosphatase, and peroxidase while significantly increased activity levels of lysozyme, catalase, and superoxide dismutase. In addition, the malondialdehyde contents of the experimental carp increased significantly in 50 and 100 µg/L PS-MPs groups compared to CK. For hepatic amino acid contents, methionine, threonine, leucine, and isoleucine contents of the hepatopancreas of carp in PS-MPs groups were significantly lower than the control group. Correlation analysis showed that amino acids in the liver closely associated with fish growth, immune, and antioxidant-related indicators. In conclusion, PS-MPs above 50 µg/L in the water body could significantly affect normal growth, weaken the activity of hepatopancreatic immunity-related enzymes and antioxidant capacity, and disturb the balance of amino acid metabolism in common carp. The findings provide valuable insights into optimizing feeding strategies, contribute to more sustainable aquaculture practices, and support the development of policies in aquatic ecosystems.
Sign in to start a discussion.
More Papers Like This
Ecotoxicological Effects of Polystyrene Particles on Cyprinus carpio: A Laboratory Assessment
Researchers exposed common carp (Cyprinus carpio) to polystyrene particles in a controlled laboratory setting, measuring survival, growth, histological damage, and oxidative stress markers over a 30-day period. Exposed fish showed liver and gill tissue damage alongside elevated oxidative stress enzymes, demonstrating that polystyrene microplastics are harmful to freshwater fish at tested concentrations.
A dosage-effect assessment of acute toxicology tests of microplastic exposure in filter-feeding fish
Researchers assessed the dose-dependent effects of polystyrene microplastics on silver carp, a filter-feeding fish, during a 48-hour exposure and recovery period. Low concentrations induced oxidative stress and gene upregulation in the intestine, with the fish able to recover after exposure ended. However, high concentrations caused significant gill and intestinal damage that persisted even after the microplastics were removed.
Toxic effects of microplastic (polyethylene) exposure: Bioaccumulation, hematological parameters and antioxidant responses in crucian carp, Carassius carassius
Researchers exposed crucian carp to polyethylene microplastics at various concentrations and found that the particles accumulated in tissues including gills, gut, and liver. The microplastics altered blood cell counts and disrupted the fish's antioxidant defense system in a dose-dependent manner. The study suggests that even common polyethylene microplastics can cause measurable biological harm in freshwater fish.
Ecotoxicological effects of polystyrene nanoplastics on common carp: Insights into blood parameters, DNA damage, and gene expression
Exposing common carp to polystyrene nanoplastics caused significant DNA damage in blood and brain cells, along with changes in genes related to immune function and stress response. Higher concentrations led to more severe effects, and the nanoplastics also disrupted liver antioxidant defenses. Since carp are widely consumed fish, these findings raise questions about the safety of fish from nanoplastic-contaminated waters for human consumption.
Effects of Polystyrene Microplastic Exposure on Liver Cell Damage, Oxidative Stress, and Gene Expression in Juvenile Crucian Carp (Carassius auratus)
Researchers exposed young crucian carp to polystyrene microplastics at different concentrations and found dose-dependent liver damage, with higher concentrations causing more severe tissue injury and weaker antioxidant defenses. The microplastics disrupted genes involved in detoxification and stress response in liver cells. Since crucian carp is a commonly consumed freshwater fish, these findings raise questions about whether microplastic-contaminated fish could affect the health of people who eat them.