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61,005 resultsShowing papers similar to Plastic Ingestion by the Small-Spotted Catshark (Scyliorhinus canicula) from the South West Coast of the United Kingdom
ClearPlastic ingestion by Scyliorhinus canicula trawl captured in the North Sea
Researchers examined the gastrointestinal tracts of 20 small-spotted catsharks trawled from the North Sea and found macroplastic in two individuals and microplastic in one, representing the first documented case of plastic ingestion in this species and suggesting routine gut analysis of commonly landed shark species is warranted.
Adverse effects of plastic ingestion on the Mediterranean small-spotted catshark (Scyliorhinus canicula)
Researchers examined plastic ingestion by small-spotted catsharks (Scyliorhinus canicula) stranded or caught in the Mediterranean and found plastics in the digestive tracts of multiple individuals, documenting the types and sizes of plastics ingested by this elasmobranch species.
High prevalence of microplastics in the digestive tract of Scyliorhinus canicula (Linneaus, 1758) shows the species biomonitoring potential
Researchers analyzed different types of plastics in the digestive tracts of female small-spotted catsharks (Scyliorhinus canicula) caught in Mediterranean waters. The study found high prevalence of plastic ingestion in this demersal shark species, documenting the types and quantities of plastic particles present.
Investigating the effects of microplastic ingestion in Scyliorhinus canicula from the South of Sicily
Researchers found microplastics in the gastrointestinal tracts of small-spotted catsharks from Sicilian waters, documenting ingestion rates and polymer types and highlighting the vulnerability of sharks as marine predators to microplastic accumulation through the food chain.
Evidence of microplastic ingestion in the shark Galeus melastomus Rafinesque, 1810 in the continental shelf off the western Mediterranean Sea
This study found microplastics in the stomachs of 17% of blackmouth catsharks sampled around the Balearic Islands, with ingestion associated with stomach fullness. The finding extends documented microplastic ingestion to a deep-sea shark species and suggests that plastic contamination affects predators at higher trophic levels in Mediterranean waters.
Coping with current impacts: The case of Scyliorhinus canicula in the NW Mediterranean Sea and implications for human consumption
Researchers assessed the health of small-spotted catsharks along the coast of Catalonia by examining their diet, parasite load, tissue damage, and contamination levels. They found high rates of plastic fiber ingestion and mercury concentrations in the muscle tissue well above European safety limits for human consumption. The findings raise food safety concerns for consumers eating this commonly caught shark species in the Mediterranean.
Presence and Potential Effects of Microplastics in the Digestive Tract of Two Small Species of Shark from the Balearic Islands
Researchers found microplastics in the digestive tracts of two catshark species near the Balearic Islands, averaging 4 to 8 particles per shark. Sharks with more microplastics showed signs of oxidative stress and inflammation in their gut tissue, including activation of detoxification enzymes. These findings show that microplastics are causing measurable biological harm in marine predators, which raises concerns about contamination moving up the food chain.
Investigating the presence of microplastics in demersal sharks of the North-East Atlantic
Researchers found evidence of microplastic and anthropogenic fibre ingestion in four demersal shark species from North-East Atlantic waters off the United Kingdom, investigating whether contamination levels varied by species, sex, or body size.
Diet and Plastic Ingestion in the Blackmouth Catshark Galeus melastomus, Rafinesque 1810, in Italian Waters
Researchers analyzed diet and plastic ingestion in blackmouth catsharks from Italian waters, finding microplastic particles in stomach contents alongside natural prey items, confirming plastic contamination in deep-sea Mediterranean predators.
Microplastic ingestion in demersal and benthic species from the Portuguese coast: S. canicula, T. luscus, P. henslowii
Researchers analyzed microplastics in the gastrointestinal tracts of three northeast Atlantic bottom-dwelling species—catshark, pouting, and Henslow's swimming crab—finding MPs primarily in the catshark (57% occurrence) and crab (43%), with polyvinyl acetate and PET as dominant polymers, suggesting trophic transfer as a possible pathway.
Drivers of microplastic accumulation in a densely canyoned continental margin: Insights from blackmouth catsharks (Galeus melastomus)
Researchers analyzed microplastic ingestion in blackmouth catsharks from the deep Mediterranean Sea and found that over 80% of the sharks had consumed microplastics. The particles were mainly polyester and cellophane fibers, and ingestion rates were linked to proximity to submarine canyons that channel pollution from land. The study demonstrates that deep-sea predators in canyon-rich coastal areas are particularly exposed to microplastic contamination.
Ask the shark: blackmouth catshark (Galeus melastomus) as a sentinel of plastic waste on the seabed
Researchers examined the stomach contents and feeding habits of blackmouth catshark caught from Mediterranean seafloor habitats to assess whether plastic ingestion rates in this deep-sea sentinel species could serve as an indirect indicator of macroplastic accumulation on the seabed.
Microplastics in Demersal Sharks From the Southeast Indian Coastal Region
Researchers examined microplastic ingestion in demersal sharks from the southeast Indian coast, finding widespread contamination across species with fibers and fragments as the most common particle types, indicating that bottom-dwelling sharks are vulnerable to microplastic exposure.
First data on plastic ingestion by blue sharks (Prionace glauca) from the Ligurian Sea (North-Western Mediterranean Sea)
Researchers found plastic ingestion in blue sharks (Prionace glauca) from the Ligurian Sea in the North-Western Mediterranean, providing the first data on plastic litter in this critically endangered Mediterranean shark species and characterizing the types and sizes of ingested debris.
Plastic ingestion and trophic transfer in an endangered top predator, the longfin mako shark (Isurus paucus), from the tropical western Pacific Ocean
This study documented plastic ingestion and trophic transfer in longfin mako sharks from the tropical western Pacific, finding plastics in both the stomach contents and prey items of this endangered species, demonstrating that microplastic contamination reaches apex marine predators through trophic pathways.
Tropical sharks feasting on and swimming through microplastics: First evidence from Malaysia
Researchers examined microplastic contamination in five tropical shark species from Malaysian waters, finding that 100% of the 74 sharks sampled contained microplastics. A total of 2,211 plastic particles were found in gastrointestinal tracts and gills, averaging about 30 particles per shark, with black fibers being the most dominant type and polyester the most common polymer. The study suggests that microplastic uptake may be gender-related in some shark species.
Microplastics and other anthropogenic fibres in large apex shark species: Abundance, characteristics, and recommendations for future research
This study provided the first investigation of microplastics and microfibres in large apex shark species, documenting their presence and characteristics across multiple species. The results confirm that microplastic contamination extends to marine megafauna at the top of the food web.
Coupling Gastro-Intestinal Tract Analysis With an Airborne Contamination Control Method to Estimate Litter Ingestion in Demersal Elasmobranchs
This study assessed plastic and microplastic ingestion by demersal elasmobranchs (bottom-dwelling sharks and rays) in the Mediterranean, combining stomach analysis with strict airborne contamination controls. By demonstrating that plastic ingestion occurs even in these deepwater predators, the study shows microplastic contamination has reached the upper levels of Mediterranean marine food webs.
Assessing the impact of microplastics on gonadal health of the spadenose shark (Scoliodon laticaudus) on the west coast of India
Researchers investigated microplastic contamination in the gastrointestinal tract and gonads of spadenose sharks off the west coast of India. They detected microplastics in nearly all samples, with female gonads showing significantly higher concentrations than males, and evidence suggesting a negative correlation between microplastic levels and reproductive health indicators in male sharks.
You Are What You Eat, Microplastics in Porbeagle Sharks From the North East Atlantic: Method Development and Analysis in Spiral Valve Content and Tissue
Microplastics were detected in all spiral valve tissues from critically endangered North-East Atlantic Porbeagle sharks, with individual sharks containing up to 3,850 particles, likely acquired through trophic transfer from prey. The study introduces spiral valve analysis as a method for microplastic biomonitoring in shark populations.
Occurrence of microplastics in the gastrointestinal tract of benthic by–catches from an eastern Mediterranean deep–sea environment
Microplastics were found in the gastrointestinal tracts of eight deep-sea fish species collected as bycatch from the eastern Mediterranean near Sardinia, including all three shark species sampled, demonstrating microplastic contamination in deep-sea ecosystems at depths down to several hundred meters.
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.
Quali-quantitative analysis of plastics and synthetic microfibers found in demersal species from Southern Tyrrhenian Sea (Central Mediterranean)
Researchers examined plastic ingestion in five demersal fish species from the Southern Tyrrhenian Sea, finding that 14.4% of 125 fish had ingested plastics at an average of 0.24 items per specimen, with fibers comprising the majority and the blackmouth catshark showing the highest contamination. Infrared and Raman spectroscopy identified the plastic debris as polypropylene, nylon, Teflon, polyethylene, and a triblock copolymer, with 94% classified as microplastics.
Microplastics in fecal samples of whale sharks (Rhincodon typus) and from surface water in the Philippines
Researchers documented microplastic ingestion by whale sharks in the Philippines through fecal sample analysis and compared it with surface water contamination, providing direct evidence that these filter-feeding megafauna ingest microplastics in a recognized pollution hotspot.