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Gill dysfunction and metabolic disruption: the size-dependent effects of microplastics on Chiromantes haematocheir
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Researchers exposed the brackish-water crab Chiromantes haematocheir to polystyrene particles at three sizes (75 nm, 500 nm, 1000 nm) for 21 days and found that smaller particles caused greater gill accumulation, elevated oxidative stress, and more pronounced disruption of immune function, energy metabolism, and apoptotic pathways.
Chiromantes haematocheir was exposed to polystyrene particles of 75 nm, 500 nm, and 1000 nm for 21 days to evaluate gill accumulation, oxidative stress, immune response, energy metabolism, and apoptosis.
More Papers Like This
Gill dysfunction and metabolic disruption: the size-dependent effects of microplastics on Chiromantes haematocheir
AI summary Read the abstract
Researchers exposed the brackish-water crab Chiromantes haematocheir to polystyrene particles at three sizes (75 nm, 500 nm, 1000 nm) for 21 days and found that smaller particles caused greater gill accumulation, elevated oxidative stress, and more pronounced disruption of immune function, energy metabolism, and apoptotic pathways.
Gill dysfunction and metabolic disruption: the size-dependent effects of microplastics on Chiromantes haematocheir
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Scientists exposed crabs to tiny plastic particles of different sizes and found that the smallest particles (75 nanometers, far tinier than a human cell) caused the most damage to their gills, disrupting energy production, triggering cell death, and overwhelming the crabs' natural defenses. This matters because it suggests that as plastics break down into smaller and smaller pieces in the environment, they may actually become more harmful to living organisms — a concerning trend given that these same tiny plastic particles are increasingly found in the seafood and water humans consume.
Long-term PS micro/nano-plastic exposure: Particle size effects on hepatopancreas injury in Parasesarma pictum
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Estuarine crabs were exposed to polystyrene particles of three different sizes for 21 days, and all sizes caused liver damage, though the effects varied depending on particle size. The research revealed that the largest particles caused the most severe injury through disruption of energy metabolism and immune suppression, while the mechanism of damage was cell death rather than programmed self-destruction.
Size-dependent toxicological effects of polystyrene microplastics in the shrimp Litopenaeus vannamei using a histomorphology, microbiome, and metabolic approach
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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.
Do Waterborne Nanoplastics Affect the Shore Crab Carcinus maenas? A Case Study with Poly(methyl)methacrylate Particles
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Researchers exposed shore crabs (Carcinus maenas) to waterborne nanoplastics and assessed multiple physiological endpoints, finding that nanoplastic exposure altered immune function, oxidative stress markers, and gene expression in ways that indicate significant sublethal harm to this ecologically important species.
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