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61,005 resultsShowing papers similar to Molecular Characterization of Anion Exchanger 2 in Litopenaeus vannamei and Its Role in Nitrite Stress
ClearToxicity of Ammonia Stress on the Physiological Homeostasis in the Gills of Litopenaeus vannamei under Seawater and Low-Salinity Conditions
This study examined how ammonia stress damages the gills of Pacific white shrimp raised in both seawater and low-salinity conditions. While not directly about microplastics, the findings are relevant because microplastics in aquaculture water can worsen ammonia toxicity, and the gill damage observed -- including disrupted ion balance and immune function -- highlights how environmental stressors compound threats to seafood safety.
Effects of nanoplastic on cell apoptosis and ion regulation in the gills of Macrobrachium nipponense
Researchers exposed juvenile oriental river shrimp to varying concentrations of nanoplastics and examined effects on gill cell viability and ion regulation. They found that higher nanoplastic concentrations increased cell death rates, decreased ion content, reduced ATPase enzyme activity, and disrupted ion transport gene expression in gill tissues. The study suggests that nanoplastic pollution can impair critical ion regulation functions in freshwater crustaceans, with implications for aquaculture.
Ion transport and metabolic regulation induced by nanoplastic toxicity in gill of Litopenaeus vannamei using proteomics
Researchers used proteomics to study how nanoplastics affect the gills of Pacific white shrimp, a widely farmed seafood species. They found that high concentrations of nanoplastics damaged gill tissue, disrupted ion balance, triggered oxidative stress, and altered energy metabolism. The study reveals the molecular mechanisms through which nanoplastic pollution may threaten the health of commercially important aquaculture species.
Transcriptomic analysis following polystyrene nanoplastic stress in the Pacific white shrimp, Litopenaeus vannamei
Researchers used transcriptomic analysis to study how polystyrene nanoplastics affect gene expression in Pacific white shrimp. They found that nanoplastic exposure activated lysosome pathways and disrupted genes involved in immune response, protein processing, and metabolism. The study provides molecular-level evidence that nanoplastics can interfere with multiple biological systems in commercially important shrimp species.
Transcriptome Analysis to Study the Molecular Response in the Gill and Hepatopancreas Tissues of Macrobrachium nipponense to Salinity Acclimation
Researchers used Illumina RNA sequencing to perform transcriptome analyses of gill and hepatopancreas tissues from the freshwater prawn Macrobrachium nipponense exposed to three salinity levels. They identified differentially expressed genes related to ion transport, oxidative phosphorylation, and glycometabolism, and confirmed carbonic anhydrase as a key regulator of osmotic adaptation through in situ hybridization.
Effect of polyethylene microplastics on oxidative stress and histopathology damages in Litopenaeus vannamei
Researchers injected fluorescent polyethylene microspheres into Pacific white shrimp (Litopenaeus vannamei) and found that microplastic exposure increased oxidative stress markers and caused histopathological damage to hepatopancreas and gill tissue, even at relatively low concentrations.
Effects of microplastics on gene expression to nonspecific immune system in pacific white shrimp (Litopenaeus vannamei).
This study found that high-density polyethylene microplastic particles in shrimp feed suppressed immune defense genes in Pacific white shrimp and caused intestinal and gill tissue damage at concentrations well below lethal levels. The findings suggest that microplastic exposure could compromise immune function and health in farmed crustaceans.
Role of Mn-LIPA in Sex Hormone Regulation and Gonadal Development in the Oriental River Prawn, Macrobrachium nipponense
Researchers cloned and characterized the lysosomal acid lipase gene Mn-LIPA from the oriental river prawn Macrobrachium nipponense and examined its role in sex hormone regulation and gonadal development. The study found that Mn-LIPA expression patterns correlate with reproductive maturation and sex-specific hormone profiles in this commercially farmed freshwater shrimp.
Microplastics weaken the exoskeletal mechanical properties of Pacific whiteleg shrimp Litopenaeus vannamei
Researchers discovered that environmentally realistic levels of microplastics weakened the shells of whiteleg shrimp by disrupting the structure of chitin, the main building material in crustacean exoskeletons. The microplastics also embedded in the shell surface and altered key genes and metabolites involved in shell formation. Since shrimp is a widely consumed seafood, this finding raises questions about both the quality of farmed shrimp and the potential for microplastic transfer to human consumers.
Acute Ammonia Causes Pathogenic Dysbiosis of Shrimp Gut Biofilms
Researchers studied how sudden ammonia exposure affects the gut microbiome of white shrimp and its connection to shrimp mortality. They found that high ammonia levels disrupted the balance of gut bacteria, allowing harmful species to proliferate while protective bacteria declined, leading to severe organ damage. The study suggests that ammonia spikes in aquaculture settings can trigger a cascade of gut microbiome disruption that contributes to shrimp disease and death.
Microplastic-Contaminated Feed Interferes with Antioxidant Enzyme and Lysozyme Gene Expression of Pacific White Shrimp (Litopenaeus vannamei) Leading to Hepatopancreas Damage and Increased Mortality
Researchers fed Pacific white shrimp diets contaminated with high-density polyethylene microplastics and observed dose-dependent immune suppression and organ damage. The microplastics disrupted the expression of antioxidant enzyme and lysozyme genes and caused significant histopathological changes in the hepatopancreas. The study demonstrates that dietary microplastic exposure can compromise the immune defenses of commercially important crustaceans, potentially increasing their susceptibility to disease.
Effects of polystyrene nanoplastics on hormonal regulation and glucose metabolism of Pacific whiteleg shrimp (Litopenaeus vannamei)
High concentrations of polystyrene nanoplastics inhibited serum hormone levels, glucose metabolism enzyme activity, and related gene expression in Pacific white-leg shrimp (Litopenaeus vannamei). The study found nanoplastic exposure negatively affects glucose metabolites by inhibiting the pentose phosphate pathway, disrupting energy metabolism in an economically important aquaculture species.
Pattern recognition receptors in Crustacea: immunological roles under environmental stress
This review examines how crustaceans like shrimp and crabs defend against infections using their innate immune system, and how environmental stressors including pollution weaken these defenses. While focused on crustacean health, the findings are relevant to humans because compromised shellfish immunity can affect the safety of farmed seafood that people consume.
First Report of OvoA Gene in Marine Arthropods: A New Candidate Stress Biomarker in Copepods
Researchers reported the first identification of the OvoA gene in marine arthropods, specifically in copepods, finding that OvoA expression increases under oxidative stress conditions, establishing it as a candidate stress biomarker for marine pollution monitoring.
Insight into the immune and microbial response of the white-leg shrimp Litopenaeus vannamei to microplastics
Researchers exposed white-leg shrimp (Litopenaeus vannamei) to different concentrations of microplastics for 48 hours and measured immune and microbial responses. The study found that high microplastic concentrations significantly reduced survival rates, altered immune-related gene expression, and disrupted the gut microbial community, suggesting that microplastic pollution may compromise shrimp immune function.
Transcriptomic, histological and biochemical analyses of Macrobrachium nipponense response to acute heat stress
This study examined how acute heat stress affects the physiology of the oriental river prawn, finding significant changes in gene expression and biochemistry that provide insight into how this commercially important species responds to warming water temperatures.
Effects of nanoplastic exposure on the growth performance and molecular characterization of growth-associated genes in juvenile Macrobrachium nipponense
Researchers found that polystyrene nanoplastic exposure impaired growth in juvenile shrimp by damaging the hepatopancreas, disrupting digestive enzyme activity, and altering growth-related gene expression at concentrations above 10 mg/L.
Two genes related to apoptosis in the hepatopancreas of juvenile prawn, Macrobrachium nipponense: Molecular characterization and transcriptional response to nanoplastic exposure
Researchers identified and characterized two apoptosis-related genes in juvenile prawns exposed to polystyrene nanoplastics, finding that nanoplastic exposure induced significant apoptotic responses in hepatopancreas tissue in a concentration-dependent manner.
Genetic additive components of the exoskeleton mineral profile and their genetic relationship with growth traits in Penaeus vannamei
Scientists found that shrimp can be bred to naturally have higher levels of important minerals like calcium and magnesium in their shells, which could make farmed shrimp more nutritious. This breeding approach could help the shrimp farming industry reduce its dependence on expensive fish-based feeds while still producing healthy seafood. For consumers, this could mean access to more sustainable and nutrient-rich shrimp in the future.
Oxidative effects of consuming microplastics in different tissues of white shrimp Litopenaeus vannamei
Researchers fed white shrimp diets containing polystyrene microplastics and found the particles accumulated in gills, muscles, and the hepatopancreas. The microplastics triggered oxidative stress, DNA damage, and lipid damage in multiple tissues, along with visible tissue abnormalities including edema and immune cell infiltration. The study demonstrates that dietary microplastic exposure can cause widespread oxidative harm across different organ systems in commercially important shellfish.
Transcriptional response in the whiteleg shrimp (Penaeus vannamei) to short-term microplastic exposure
Researchers exposed whiteleg shrimp (Penaeus vannamei) to microplastics for 96 hours and used transcriptomics to profile gene expression changes, finding significant upregulation of stress response, immune, and detoxification pathways, indicating that even short-term microplastic exposure triggers a broad molecular stress response.
Acclimatory gene expression of primed clams enhances robustness to elevated pCO2
Pacific geoduck clams pre-exposed to elevated CO2 showed acclimatory gene expression changes that improved their growth and antioxidant responses when later exposed to moderate ocean acidification conditions. The results suggest epigenetic-like transcriptional priming may help shellfish populations cope with progressive ocean acidification.
Effect of Photoperiod on Nutritional Quality of Muscle and Lipid Metabolism of Litopenaeus vannamei
Not relevant to microplastics — this study examines how different light exposure durations affect lipid metabolism, muscle composition, and nutritional quality in farmed white shrimp (Litopenaeus vannamei), recommending a 16-hour light cycle to balance growth and welfare.
Use of Tandem Mass Spectrometry Quantitative Proteomics to Identify Potential Biomarkers to Follow the Effects of Cold and Frozen Storage of Muscle Tissue of Litopenaeus vannamei
Not directly relevant to microplastics — this study uses quantitative proteomics to identify protein biomarkers of quality deterioration in Pacific white shrimp muscle during cold and frozen storage.