We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Effects of Hypoxia Stress on Survival, Antioxidant and Anaerobic Metabolic Enzymes, and Related Gene Expression of Red Swamp Crayfish Procambarus clarkii
ClearAntioxidant Capacity, Enzyme Activities Related to Energy Metabolism, and Transcriptome Analysis of Crassostrea hongkongensis Exposed to Hypoxia
Researchers studied how low-oxygen conditions affect the antioxidant defenses and energy metabolism of the Hong Kong oyster, an important aquaculture species in China. They found that hypoxia significantly altered enzyme activity related to energy production and caused oxidative stress in the oysters. The study provides insights into how seasonal oxygen depletion in coastal waters threatens oyster health and aquaculture productivity.
Saccharomyces cerevisiae additions normalized hemocyte differential genes expression and regulated crayfish (Procambarus clarkii) oxidative damage under cadmium stress
Researchers tested whether adding the probiotic yeast Saccharomyces cerevisiae to crayfish feed could reduce cadmium (a toxic heavy metal) accumulation in the animals, finding that a 5% supplementation removed over 66% of cadmium after 21 days while also reducing oxidative damage. The findings suggest this probiotic approach could help produce safer, cadmium-free farmed crayfish.
Effect of dietary Bacillus subtilis supplement on Cd toxicokinetics and Cd-induced immune and antioxidant impairment of Procambarus clarkii
Researchers exposed red swamp crayfish to cadmium at 0.1 and 1.0 mg/L with and without dietary Bacillus subtilis supplementation, finding dose- and time-dependent cadmium accumulation with gills showing highest uptake, and demonstrating that Bacillus subtilis supplementation ameliorated cadmium-induced immune and antioxidant impairment across crayfish tissues.
Physiological response of freshwater crayfish, Astacus leptodactylus exposed to polyethylene microplastics at different temperature
Freshwater crayfish exposed to polyethylene microplastics showed liver stress, disrupted blood chemistry, and weakened immune responses, with higher temperatures making the effects worse. The combination of microplastic exposure and warmer water caused greater damage to antioxidant defenses and enzyme activity than either stressor alone. As climate change raises water temperatures, aquatic organisms may become more vulnerable to microplastic toxicity, which could affect the safety of freshwater species consumed by humans.
Effects of Different Sources of Culture Substrate on the Growth and Immune Performance of the Red Swamp Crayfish (Procambarus clarkii)
Researchers evaluated the effects of culture substrates from different sources on the growth performance and immune enzyme activity of red swamp crayfish (Procambarus clarkii), measuring weight gain rate, body length growth rate, specific growth rate, and activities of acid phosphatase, alkaline phosphatase, and superoxide dismutase. The substrate designated as group I2 produced the highest growth and immune performance scores, significantly outperforming other substrate groups.
Long-term hypoxia and reoxygenation induced oxidative stress lead to immunosuppression and apoptosis in golden pompano (Trachinotus blochii)
Researchers exposed golden pompano fish to 14 days of low-oxygen conditions followed by reoxygenation and found that this hypoxia-reoxygenation cycle caused oxidative stress, immunosuppression, and increased liver cell apoptosis.
Toxic mechanisms of nanoplastics exposure at environmental concentrations on juvenile red swamp crayfish (Procambarus clarkii): From multiple perspectives
Researchers exposed juvenile red swamp crayfish to nanoplastics at concentrations found in the environment and observed stunted growth, oxidative stress, liver and gill damage, and changes in gene activity. Different concentrations triggered different toxic pathways, including immune disruption and metabolic problems. Since crayfish are a widely consumed freshwater species, these findings raise concerns about nanoplastic contamination in the food supply.
Exploring the Coexposure Effects of Pyrogallol and Microplastic on the Red Swamp Crayfish Procambarus clarkii
Researchers exposed freshwater crayfish to microplastics and pyrogallol (a plant-derived chemical) both alone and together, and found that the combination caused worse damage than either pollutant alone. The crayfish showed liver damage, reduced antioxidant defenses, and immune system changes. Since crayfish are a common food source, this study highlights how microplastics interacting with other environmental chemicals could affect food safety.
Hypoxia in the Blue Mussel Mytilus chilensis Induces Transcriptome Shift Associated with Endoplasmic Reticulum Stress, Metabolism, and Immune Response.
Scientists used gene expression analysis to study how low-oxygen conditions affect the blue mussel Mytilus chilensis at the molecular level. Researchers found that hypoxia triggered stress responses in the mussels' gills, digestive glands, and muscles, including cellular stress pathways, metabolic shifts, and immune changes. The study highlights how climate-driven oxygen depletion in coastal waters can stress economically important shellfish species.
Combined exposure to microplastics and copper elicited size-dependent uptake and toxicity responses in red swamp crayfish (Procambarus clarkia)
Scientists exposed red swamp crayfish to microplastics of two sizes combined with copper, finding that smaller microplastics increased copper accumulation in tissues and caused more organ damage. The combined exposure reduced antioxidant defenses and disrupted genes that help regulate copper in the body. Since crayfish is widely consumed, this study raises concerns that microplastics in waterways could increase the amount of toxic metals that accumulate in popular seafood.
Influences of Aquaponics System on Growth Performance, Antioxidant Parameters, Stress Parameters and Gene Expression of Carassius auratus
Researchers evaluated the effects of an aquaponics system on the growth performance, antioxidant parameters, stress markers, and gene expression of crucian carp compared to conventional aquaculture conditions, including hypoxia stress trials. The study found that aquaponics influenced fish welfare and physiological status, providing insight into how integrated farming systems affect stress responses in cultured fish.
Accumulation of polyethylene microplastics induces oxidative stress, microbiome dysbiosis and immunoregulation in crayfish
Researchers exposed crayfish (Procambarus clarkii) to polyethylene microplastics through their diet for 21 days and found that particles accumulated in the intestine, hepatopancreas, gills, and blood, persisting even after a week of depuration in clean water. The accumulated microplastics caused oxidative stress, disrupted the gut microbiome, and altered immune regulation. The study suggests that microplastic exposure may compromise the health and immune defenses of commercially important freshwater crustaceans.
Comparison of Intestinal Bacteria of Procambarus clarkii Farmed in Various Rice Paddy Regions
Researchers analyzed gut microbiota in red swamp crayfish (Procambarus clarkii) farmed across different rice paddy regions of China, finding significant regional differences in intestinal bacterial communities linked to local environmental conditions.
The Combined Effects of Toxic Microcystis aeruginosa and Thermal Stress on the Edible Clam (Corbicula fluminea): Insights into Oxidative Stress Responses and Molecular Networks
Researchers exposed the edible clam Corbicula fluminea to combined thermal stress and toxic Microcystis aeruginosa cyanobacteria, finding that the combined stressors caused greater oxidative stress and physiological disruption than either alone, with implications for bivalve aquaculture during cyanobacterial bloom events.
The effect of a polystyrene nanoplastic on the intestinal microbes and oxidative stress defense of the freshwater crayfish, Procambarus clarkii
Researchers tested the acute effects of polystyrene nanoplastics on freshwater crayfish and found that exposure altered the composition of intestinal bacteria and disrupted oxidative stress defenses. Higher concentrations of nanoplastics led to more severe changes in gut microbial diversity and antioxidant enzyme activity. The study adds to growing evidence that nanoplastic pollution can harm the gut health and immune defenses of freshwater organisms.
H2O2-Induced Oxidative Stress Responses in Eriocheir sinensis: Antioxidant Defense and Immune Gene Expression Dynamics
This study examined how Chinese mitten crabs respond to oxidative stress caused by hydrogen peroxide, finding that their antioxidant defenses and immune gene activity initially ramp up but then collapse under prolonged or high-dose exposure. While not directly about microplastics, the findings are relevant because microplastics are known to trigger similar oxidative stress in aquatic organisms, and this research helps map the biological pathways involved.
Effects of nanoplastic exposure on the immunity and metabolism of red crayfish (Cherax quadricarinatus) based on high-throughput sequencing
Researchers examined nanoplastic effects on red crayfish using transcriptomics and microbiome analysis, finding that high concentrations suppressed antioxidant and immune responses while significantly altering gut microbial communities.
Effects of soil trace metals, organic carbon load and physicochemical stressors on active oxygen species metabolism in Scylla serrata sampled along the Bay of Bengal in Odisha state, India
Researchers examined how soil trace metals (calcium and magnesium), organic carbon load, and physicochemical water stressors influence oxidative stress and antioxidant parameters in the edible mud crab Scylla serrata sampled from multiple sites along the Bay of Bengal in Odisha, India. The study found significant spatio-temporal variation in oxidative stress markers across sites with differing environmental conditions, suggesting that combined soil and water quality parameters drive oxidative stress in this ecologically and economically important crab species.
Different geographical environment can affect the fatty acid compositions of the Red Swamp Crayfish (Procambarus clarkii) through the intestinal flora
Not relevant to microplastics — this study examines how geographic environment and gut microbiota influence the fatty acid composition and nutritional quality of red swamp crayfish (Procambarus clarkii).
Transcriptome Analysis of Gills Provides Insights Into Translation Changes Under Hypoxic Stress and Reoxygenation in Golden Pompano, Trachinotus ovatus (Linnaeus 1758)
This transcriptome study found that oxygen deprivation suppresses immune genes in the gills of golden pompano fish, potentially explaining why fish are more susceptible to infections under low-oxygen aquaculture conditions. The molecular findings support improved oxygen management practices in fish farming to protect both animal welfare and food quality.
Oxidative stress and histopathological effects by microplastic beads, in the crayfish Procambarus clarkii, and fiddler crab Leptuca pugilator
Researchers exposed crayfish and fiddler crabs to polystyrene microplastic beads for one month and examined the effects on their hepatopancreas, a key digestive organ. Both species showed signs of oxidative stress and tissue damage, with microplastic particles accumulating in their organs. The study provides evidence that even at moderate concentrations, microplastic exposure can cause measurable physiological harm to freshwater and coastal crustaceans.
Orally administered nano-polystyrene caused vitellogenin alteration and oxidative stress in the red swamp crayfish (Procambarus clarkii)
Researchers orally dosed red swamp crayfish with 100 nm carboxylated polystyrene nanoparticles and found mild but measurable stress responses including altered gene expression in immune function, oxidative stress pathways, lipid metabolism, and reproduction, suggesting nanoplastics can perturb molecular systems even at low concentrations without breaching physiological thresholds.
Distinct Gene Expression Patterns of Two Heat Shock Protein 70 Members During Development, Diapause, and Temperature Stress in the Freshwater Crustacean Daphnia magna
This study examined how two heat shock protein genes respond during the life cycle, dormancy, and temperature stress of the water flea Daphnia magna. Heat shock proteins help organisms tolerate environmental stress, including exposure to toxic pollutants like microplastics, making Daphnia a useful model for ecotoxicology research.
Effects of Acute Ammonia Stress on Antioxidant Responses, Histopathology and Ammonia Detoxification Metabolism in Triangle Sail Mussels (Hyriopsis cumingii)
Triangle sail mussels exposed to sub-lethal ammonia concentrations showed antioxidant enzyme activation followed by inhibition, with the highest stress responses in gills and hepatopancreas and histopathological damage suggesting oxidative stress as a key mechanism of ammonia toxicity.