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First account of microplastics in pelagic sporting dolphinfish from the eastern Mexican coast of Baja California Sur
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Researchers provided the first account of microplastics in pelagic sporting dolphinfish from the eastern Mexican coast of Baja California Sur, finding MP particles in the gastrointestinal tracts of sampled fish, confirming contamination in this commercially important species.
This study is a baseline data on the presence of MPs from the gastro-intestinal tracts (GITs) in Coryphaena hippurus Linnaeus, from eastern Baja California Sur, México. 878 MPs items (in %) of fibers (29%), fragments (68%) and films (1.3%) were detected from 51 GITs of Coryphaena hippurus. Transparent, white, blue and black were the prevalent colours. Morphological features observed through SEM analysis, the presence of heavily weathered MPs is due to the mechanical, microbiological and chemical weathering process. PP (29%), Nylon (29%), PS (17%), PE (11%), PET (6%) and HDPE (8%) presence indicates their source from regional anthropogenic stress. Trophic level transition is enforced by polymer derivative, permitting the sinking behavior of MPs and increased ingestion probability. Fishes were classified as slim despite their higher feeding capabilities and ingested MPs indicates a relationship with environmental contaminants. Current study emphasizes the health risk linked to biological aspects of MPs ingestion.
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Researchers examined the gastrointestinal tracts of dolphinfish caught in the Western Mediterranean Sea and found microplastics present, adding to the growing body of evidence that plastic ingestion is widespread among commercially fished species in European waters.
Microplastics in a pelagic dolphinfish (Coryphaena hippurus) from the Eastern Pacific Ocean and the implications for fish health
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Researchers examined microplastic contamination in 15 wild-caught dolphinfish from the Eastern Pacific Ocean and found microplastics in 100% of the fish studied, averaging 9.3 particles per individual. Particles were detected across gills, esophagus, stomach, intestines, and muscle tissue, with polyester and PET being the most common polymer types. Molecular docking analysis suggested that dominant microplastic polymers could interact with key cellular proteins, indicating potential health implications for both the fish and humans who consume them.
A new digestion approach for the extraction of microplastics from gastrointestinal tracts (GITs) of the common dolphinfish (Coryphaena hippurus) from the western Mediterranean Sea
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Researchers developed a novel combined KOH and nitric acid digestion protocol for extracting microplastics from the gastrointestinal tracts of marine fish, and validated it on common dolphinfish from the western Mediterranean Sea. The method improved detection of small MPs, with 65.5% of dolphinfish containing meso- and microplastic fragments and sheets predominantly composed of polyethylene, polypropylene, and polystyrene.
Potential impact of meso- and macroplastic ingestion by female dolphinfish (Coryphaena hippurus Linnaeus, 1758) in the Southern Mexican Pacific
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Researchers found plastic fibers and fragments in the stomachs of dolphinfish (mahi-mahi) caught off Mexico's Pacific coast, with sharp-edged pieces causing real damage, including inflammation and tissue injury, to some fish stomachs. Since dolphinfish is a popular food fish, this raises questions about how much plastic pollution is working its way up the food chain toward the seafood on our plates, though more research is needed to know what this means for people who eat it.
Plastic density as a key factor in the presence of microplastic in the gastrointestinal tract of commercial fishes from Campeche Bay, Mexico
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Researchers found microplastics in 316 particles across 240 gastrointestinal tracts from six commercially consumed fish species in Campeche Bay, Mexico, with average ingestion of 1.31 MPs per fish, and found that fish feeding in mid-water column tended to ingest denser polymer types reflecting their depth distribution.
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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.