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Assessment of microplastic contamination in an eastern Pacific tuna (Katsuwonus pelamis) and evaluation of its health risk implication through molecular docking and metabolomics studies
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Researchers found microplastic contamination across multiple organs of skipjack tuna from the Eastern Pacific, with molecular docking and metabolomics analyses revealing potential health risks from microplastic-associated chemical exposure through seafood consumption.
This work investigated microplastic (MP) pollution in a commercially-important tuna species Katsuwonus pelamis (K. pelamis) from the Eastern Pacific and health implications. 125 MPs were extracted from gills, esophagus, stomachs, intestinal tracts, and muscle of K. pelamis. MPs in the esophagus was the highest, ∼7.6 times higher than that in the gill. Polyester and polyethylene terephthalate (PET) were dominant. Molecular docking implied that PET stabilized the complex via forming 4 new hydrogen bonds that interacted with Arg83, Gln246, Thr267, and Gly268, given that PET can enter glycerol kinase protein active pocket. Metabonomic results suggested that Glycerol 3-phosphate up expressed 1.66 more times that of control groups with no MPs in the muscle. This confirmed that MPs would lie in the glycerol kinase protein active pocket, which triggered menace to K. pelamis. The results provided insights into suggested the potential influence of MPs on the sustainability of fisheries and seafood safety.
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Microplastics Ingestion by Skipjack tuna (Katsuwonus pelamis) in Ternate, North Maluku - Indonesia
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Researchers found microplastics in the digestive tracts of skipjack tuna collected from Indonesian waters, with plastic particles present in most fish examined. Since tuna is widely consumed, the findings raise concerns about human exposure to microplastics through seafood.
Analysis the Abundance and Composition of Microplastics in Skipjack Fish (Katsuwonus pelamis) at Muara Angke Fish Auction
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Researchers analyzed the abundance and composition of microplastics in the digestive tracts of skipjack tuna (Katsuwonus pelamis) collected from Muara Angke Fish Auction in Indonesia, using 10% KOH digestion to extract microplastics and assess contamination levels in a commercially important marine species.
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Researchers compiled a complete microplastic particle dataset extracted from tissue samples of two commercially important marine fish species, Megalaspis cordyla and Katsuwonus pelamis (skipjack tuna), using standardized digestion and stereomicroscopy-based identification protocols.
Toxic tuna tales: Tracing microplastic pathways in mackerel tuna (Euthynnus affinis), longtail tuna (Thunnus tonggol), and bullet tuna (Auxis rochei)
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Researchers examined 125 tuna from three species in Malaysian waters and found microplastics in their digestive tracts, gills, and edible muscle tissue. Fibers were the most common type, and male fish accumulated more microplastics than females. Since tuna is one of the most widely consumed fish globally, the presence of microplastics in edible muscle tissue raises direct concerns about human exposure through seafood.
A Systematic Review of Microplastic Contamination in Tuna Species: General Pathways into the Food Chain with Ecotoxicological and Human Health Perspectives
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This systematic review found that tuna species worldwide contain significant levels of microplastics, especially polyethylene and polypropylene, concentrated in their gills and digestive tracts. Since tuna is one of the most widely consumed fish globally, these findings mean that eating tuna is a direct route for microplastic exposure in the human diet.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.