Toxic Effects of Nitrite and Microplastics Stress on Histology, Oxidative Stress, and Metabolic Function in the Gills of Pacific White Shrimp, Litopenaeus Vannamei

Characteristics and potential human health risks of microplastics for commercial shrimp Litopenaeus vannamei from South Yellow Sea Mudflat

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Scientists studying shrimp from a Chinese coastal mudflat found tiny plastic bits (mostly microscopic fibers from packaging-type plastics) throughout the shrimp's bodies, with even more found in shrimp caught near river mouths where pollution runs off. The good news: most of these plastic particles were concentrated in the gut, so removing and not eating the digestive tract (something many people already do when peeling shrimp) significantly cuts down your exposure to microplastics.

Effect of polyethylene microplastics on oxidative stress and histopathology damages in Litopenaeus vannamei

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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.

Assessment of microplastic hazards in Penaeus vannamei shrimp in a typical estuary of China: polymer composition, risk assessment, and health implications

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Researchers assessed microplastic contamination in whiteleg shrimp from the Jiulong River estuary in China, finding five polymer types at 0.46 particles/g, with PVC comprising only 5.52% by count but contributing 98.11% of the total hazard risk index due to its toxic chemical additives. The disproportionate hazard posed by PVC despite its low abundance in farmed shrimp has direct food-safety implications, as commercially important shellfish in estuarine aquaculture systems are accumulating high-risk plastics consumed by people globally.

Multi-omics analysis reveals polyethylene microplastics-induced gill damage, metabolic disruption and immune dysregulation in Lateolabrax maculatus

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Researchers exposed spotted sea bass (Lateolabrax maculatus) to dietary polyethylene microplastics and found that even moderate concentrations caused gill tissue damage, oxidative stress, and immune dysregulation by disrupting energy metabolism and NF-κB inflammatory pathways, with most effects showing partial recovery after a 14-day depuration period.

Polyethylene Microplastics Induce Concentration- and Time-Dependent Hematophysiological Impairment and Oxidative Stress Following Tissue Accumulation in Rock Bream (Oplegnathus Fasciatus)