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Transcriptional response in the whiteleg shrimp (Penaeus vannamei) to short-term microplastic exposure
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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.
The ingestion of microplastics by diverse marine organisms induces behavioral disorders, physiological changes, and immune and stress responses. The negative effects of microplastic exposure in penaeid shrimps are still unclear despite the annual increase in the consumption of these food sources by humans and in marine aquaculture. Therefore, this study aimed to investigate the potential negative effects of microplastic exposure and gain a deeper understanding of its impacts on culturing penaeid shrimp. We generated RNA sequencing data from the whiteleg shrimp (Penaeus vannamei) artificially exposed to microplastics and analyzed the differentially expressed genes. Based on transcriptional comparisons, exposure to microplastics induces cardiac muscle dysfunction and promotes stress and immune responses in whiteleg shrimp. Thus, we confirmed the negative impact of microplastic exposure in whiteleg shrimp. These results provide a foundation for studies on the biological effects of microplastic ingestion on aquaculture species and their potential impact on humans through their consumption of these important marine resources.
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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.
Insight into the immune and microbial response of the white-leg shrimp Litopenaeus vannamei to microplastics
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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.
Acute and chronic effects of polystyrene microplastics on brine shrimp: First evidence highlighting the molecular mechanism through transcriptome analysis
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Researchers investigated both acute and chronic toxicity of polystyrene microplastics on brine shrimp, using transcriptome analysis to uncover molecular mechanisms. While acute exposure did not significantly affect survival, chronic exposure led to concentration-dependent bioaccumulation and increased reactive oxygen species generation, with gene expression analysis revealing disrupted metabolic and stress response pathways.
Effects of microplastics on gene expression to nonspecific immune system in pacific white shrimp (Litopenaeus vannamei).
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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.
Length-dependent impacts of fibrous microplastics on Pacific white shrimp (Penaeus vannamei) determined using multi-omics approach
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White shrimp (Penaeus vannamei) exposed to short versus long PET microfibers showed length-dependent toxicological responses assessed by transcriptomics and metabolomics, with shorter fibers causing greater oxidative stress, immune disruption, and metabolic disturbance than longer ones.
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