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61,005 resultsShowing papers similar to Study of the presence of macroplastics and microplastics in the stomach content of juvenile bluefin tunas and their diet in the Mediterranean Sea.
ClearStudy of the presence of macroplastics and microplastics in the stomach content of juvenile bluefin tunas and their diet in the Mediterranean Sea.
Researchers examined microplastic and macroplastic ingestion in juvenile bluefin tuna (Thunnus thynnus, 20-40 cm) captured in recreational fishing contests at multiple sites along the Spanish Mediterranean coast, studying 300 individuals to assess stomach contents and dietary interactions. The study represented the first investigation of microplastic ingestion and its relationship to prey diet in juvenile bluefin tuna, a commercially and ecologically important top predator.
First evidence of presence of plastic debris in stomach of large pelagic fish in the Mediterranean Sea
Researchers examined stomach contents of large predatory fish including swordfish and bluefin tuna caught in the Mediterranean Sea and found plastic debris in about 18% of the specimens. The ingested plastics ranged from tiny microplastics to large fragments, and were primarily polyethylene and polyester. This is the first study documenting plastic ingestion in large pelagic Mediterranean fish, suggesting that even top ocean predators are exposed to plastic pollution.
Fish as a Bioindicator of Microplastic Contamination in the Mediterranean Sea: State of Knowledge
This review examines the use of fish species as bioindicators of microplastic contamination in the Mediterranean Sea. The analysis found that increasing microplastic pollution would further threaten already-stressed fishery stocks in the region. Researchers recommend prioritizing studies on the most consumed Mediterranean fish species, such as sardine, anchovy, and bluefin tuna, which have been reported to be highly contaminated by microplastics.
Detection of microplastics, polymers and additives in edible muscle of swordfish (Xiphias gladius) and bluefin tuna (Thunnus thynnus) caught in the Mediterranean Sea
Researchers detected microplastics — ranging from 140 to 270 particles per kilogram of edible muscle — in swordfish and bluefin tuna caught in the Mediterranean Sea, with polypropylene being the most common polymer type in both species. This confirms that microplastic contamination has reached large, commercially important fish consumed by people across the region.
From prey to predators: Evidence of microplastic trophic transfer in tuna and large pelagic species in the southwestern Tropical Atlantic
Researchers found evidence of microplastic trophic transfer from prey to tuna and large pelagic predators in the southwestern Tropical Atlantic, demonstrating that plastic contamination moves through marine food chains to economically important fish species.
Microplastic occurrence in the gastrointestinal tract and gill of bioindicator fish species in the northeastern Mediterranean
Four commercial fish species from the northeastern Mediterranean were examined for microplastic presence in gastrointestinal tracts and gills, with plastics found in all species and fiber being the most common type. The results add to growing evidence that microplastic ingestion is routine for commercially harvested Mediterranean fish.
A Systematic Review of Microplastic Contamination in Tuna Species: General Pathways into the Food Chain with Ecotoxicological and Human Health Perspectives
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.
Toxic tuna tales: Tracing microplastic pathways in mackerel tuna (Euthynnus affinis), longtail tuna (Thunnus tonggol), and bullet tuna (Auxis rochei)
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.
Evolution of the Distribution and Dynamic of Microplastic in Water and Biota: A Study Case From the Gulf of Gabes (Southern Mediterranean Sea)
Researchers found microplastics in all surface water samples and in the digestive tracts of multiple commercially important marine species in the Gulf of Gabes, Southern Mediterranean, revealing widespread contamination in a previously understudied region.
Microplastics Contamination of Large Pelagic Fish in the Open Atlantic Ocean
Researchers analyzed microplastic contamination in large pelagic fish including tunas, mackerels, and amberjacks collected from the open Atlantic Ocean to assess plastic exposure in top predators. They found microplastics present in fish from even remote open-ocean habitats, demonstrating the ubiquity of microplastic contamination and the utility of large migratory fish as indicators of ocean health.
Ingestion of microplastics by pelagic fish from the Moroccan Central Atlantic coast
Researchers found microplastics in the stomachs of three small pelagic fish species caught along the Moroccan Central Atlantic coast, confirming plastic ingestion in commercially important species in a region where marine litter is predominantly plastic. The study adds to growing evidence of microplastic contamination in North African Atlantic fisheries.
Microplastics occurrence in edible fish species (Mullus barbatus and Merluccius merluccius) collected in three different geographical sub-areas of the Mediterranean Sea
Researchers examined the gastrointestinal tracts of 229 demersal fish from two Mediterranean species across three geographic sub-areas, finding microplastics in a significant portion of individuals with fibers as the dominant type. The study contributes to growing evidence that microplastic ingestion is widespread in commercially fished Mediterranean species.
Bioindicators for monitoring marine litter ingestion and its impacts on Mediterranean biodiversity
Researchers reviewed existing knowledge of marine litter ingestion impacts on Mediterranean biodiversity and proposed a new integrated monitoring framework using bioindicator species, identifying major knowledge gaps in understudied habitats and sub-regions while outlining a threefold approach to simultaneously measure plastic presence and its sub-lethal effects on organisms.
Relationship between biological, ecological parameters and microplastic concentration in Mediterranean fish species
Researchers detected and characterized microplastics in five commercially important Mediterranean fish species -- including Mullus barbatus, Sardina pilchardus, and Trachinus draco -- and analyzed how biological parameters (length, weight) and ecological factors (diet, habitat) influenced microplastic contamination levels across species.
Microplastic Characteristic Found in Gastrointestinal Tract of Pelagic and Demersal Fishes in Tuban, East Java
Researchers found microplastics in the gastrointestinal tracts of both pelagic and demersal fish species, documenting plastic ingestion across different feeding guilds and ocean depths. The study adds to growing evidence of widespread microplastic contamination throughout marine food webs.
Microplastic characterization in the stomachs of swordfish (Xiphias gladius) from the western Mediterranean Sea
Researchers analyzed the stomachs of 49 swordfish from the western Mediterranean Sea and found microplastics in 80% of them, predominantly small fibers made of polyethylene terephthalate. Comparing samples from two time periods showed that the frequency of microplastic ingestion increased over time, rising from about 70% to 90% of fish examined. The study highlights growing microplastic exposure in large predatory fish that are widely consumed by humans.
Investigation of microplastic contamination in the gastrointestinal tract of some species of caught fish from Oman Sea
Researchers found microplastics in the gastrointestinal tracts of fish species sampled from marine environments, documenting plastic ingestion across multiple species. The study contributes to the growing evidence base on microplastic contamination in commercially important fish.
Revealing the capability of the European hake to cope with micro-litter environmental exposure and its inferred potential health impact in the NW Mediterranean Sea
Researchers investigated microplastic ingestion by juvenile European hake in the NW Mediterranean Sea, revealing the species' capacity to cope with environmental micro-litter exposure while identifying potential health impacts from anthropogenic particle accumulation in this commercially important fish.
Occurrence, characteristics and distribution of microplastics in commercial marine fishes of the Bay of Bengal
Scientists found microplastics in the muscles, guts, and gills of six commercially important fish species from the Bay of Bengal, identifying over 7,000 particles total. Polyethylene and polypropylene fibers were the most common types, and tuna had the highest contamination levels. Since these fish are widely consumed by people in the region, the findings highlight a direct dietary exposure pathway for microplastics to reach humans through seafood.
Using Boops boops (osteichthyes) to assess microplastic ingestion in the Mediterranean Sea
Researchers assessed microplastic ingestion in 884 Boops boops fish caught at 20 coastal sites across Spain, France, Italy, and Greece, finding microplastics in 46.8% of individuals with an average of 1.17 items per fish, predominantly filaments composed of polyethylene and polypropylene.
Microplastic ingestion by pelagic and benthic fish and diet composition: A case study in the NW Iberian shelf
Researchers found microplastics in 78% of fish examined across four pelagic and benthic species from the NW Iberian shelf, with ingestion rates varying by feeding ecology and habitat depth, and identified predominantly fibers and fragments in gastrointestinal contents following alkaline tissue digestion.
Feeding Habits and the Occurrence of Anthropogenic Debris in the Stomach Content of Marine Fish from Pattani Bay, Gulf of Thailand
Researchers found anthropogenic debris in the stomachs of 12 of 34 marine fish species from the Gulf of Thailand, with planktivorous fish ingesting the most debris and blue-colored items predominating, with ingestion rates peaking during the northeast monsoon season.
Microplastic Concentration in Mediterranean Commercial Fish: A Systematic Review
This systematic review examines microplastic levels in five commercially important fish species caught in Mediterranean waters. The findings confirm that microplastics are routinely present in popular seafood, with concentrations varying by species and location, underscoring the need to monitor and reduce plastic contamination in fish that millions of people eat regularly.
Plastic ingestion by pelagic and demersal fish from the North Sea and Baltic Sea
Researchers examined gastrointestinal tracts of 290 North and Baltic Sea fish and detected plastic in 5.5% of individuals, with pelagic species like herring and mackerel ingesting plastic at three times the rate of bottom-dwelling cod and flounder, and polyethylene making up nearly 40% of identified polymer types.