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61,005 resultsShowing papers similar to Microplastic presence in the pelagic fish, Seriola dumerili, from Balearic Islands (Western Mediterranean), and assessment of oxidative stress and detoxification biomarkers in liver
ClearMicroplastic Pollution and Its Physiological Effects on the Top Fish Predator Dentex dentex from the Western Mediterranean
Researchers examined common dentex fish from coastal waters near Ibiza and found microplastics in over 90% of specimens, averaging about 6.6 particles per individual. Fish with higher microplastic loads showed increased detoxification and antioxidant enzyme activity in their digestive tracts compared to fish with lower loads. The findings indicate that microplastic ingestion triggers localized physiological stress responses in this commercially important Mediterranean predator.
Presence and Potential Effect of Microplastics Associated with Anthropic Activity in Two Benthic Fishes Serranus scriba and Lithognathus mormyrus
Researchers compared microplastic ingestion and oxidative stress responses in two Mediterranean coastal fish species (Serranus scriba and Lithognathus mormyrus) from sites with different levels of human activity near Mallorca, finding higher microplastic loads and greater antioxidant enzyme activity at the more impacted site.
A Biomarker Approach as Responses of Bioindicator Commercial Fish Species to Microplastic Ingestion: Assessing Tissue and Biochemical Relationships
Researchers assessed microplastic intake and antioxidant biomarker responses in three Mediterranean fish species, finding that microplastic ingestion correlated with oxidative stress indicators across red mullet, bogue, and anchovy populations.
Induction of detoxification systems in wild red mullet Mullus surmuletus after microplastic ingestion
Wild red mullet caught near Mallorca were found to have ingested microplastics in 28% of sampled fish, and those fish showed activation of liver detoxification systems compared to fish without plastic in their stomachs. This is among the first evidence that wild fish experience physiological responses to microplastic ingestion, though no oxidative damage was detected.
Microplastic Presence in the Digestive Tract of Pearly Razorfish Xyrichtys novacula Causes Oxidative Stress in Liver Tissue
Microplastics were found in 89% of pearly razorfish (Xyrichtys novacula) specimens from the Balearic Islands, with fish carrying more than 4 MPs showing elevated activities of glutathione peroxidase, glutathione reductase, and glutathione S-transferase in liver tissue, indicating oxidative stress and detoxification responses.
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.
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.
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.
Microplastics in wild fish from North East Atlantic Ocean and its potential for causing neurotoxic effects, lipid oxidative damage, and human health risks associated with ingestion exposure
Researchers examined microplastic contamination in three commercially important fish species from the North East Atlantic Ocean and found that 49% of the 150 fish analyzed contained microplastics. Fish with microplastics showed significantly higher levels of lipid damage in the brain, gills, and muscle, along with signs of neurotoxicity. Based on the microplastics found in edible fish muscle, the study estimates that human consumers may ingest hundreds of microplastic particles per year from fish consumption alone.
Physiological Responses to Microplastic Ingestion in the Peacock Wrasse Symphodus tinca from Ibiza, Spain
Researchers assessed microplastic occurrence and physiological stress responses in peacock wrasse (Symphodus tinca) from the Balearic Islands, finding MPs in 60.7% of fish sampled with 58 total items. Fish with microplastics showed elevated markers of oxidative stress and detoxification enzyme activity compared to those without.
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.
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 metabolic and oxidative stress induced by biofouled microplastics exposure in Seriola lalandi (yellowtail kingfish)
This study tested how microplastics covered in natural ocean bacteria (biofouled) affect yellowtail kingfish compared to clean microplastics. The biofouled microplastics caused more oxidative stress and metabolic disruption in the fish than clean ones. Since fish in the wild almost always encounter bacteria-coated microplastics rather than clean ones, previous studies using only clean plastics may have underestimated the real health risks.
Ingestion of microplastics by demersal fish from the Spanish Atlantic and Mediterranean coasts
Researchers examined the gastrointestinal contents of demersal fish caught from Spanish Atlantic and Mediterranean coasts and found microplastics in a notable proportion, with fiber and fragment types most common, suggesting widespread exposure for bottom-dwelling fish.
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.
Metabolomic disorders unveil hepatotoxicity of environmental microplastics in wild fish Serranus scriba (Linnaeus 1758)
Researchers analyzed wild painted comber fish from three coastal regions in Tunisia and found small environmental microplastics (3 micrometers and smaller) accumulated in their liver tissue. Using metabolomic analysis, they identified disruptions in liver metabolism linked to microplastic presence, with the severity varying by regional pollution levels. The study provides field-based evidence that environmental microplastics can cause metabolic disorders in the livers of wild fish populations.
Abundance and ecological risk of microplastics in commercial fish species from northeastern Mediterranean Sea
Researchers examined nine commercially important fish species from the northeastern Mediterranean Sea and found microplastics in both their digestive tracts and gills. The most common particles were small polyethylene and polypropylene fibers, and bottom-dwelling fish species had higher contamination levels. While the ecological risk was rated low to medium, the presence of microplastics in widely consumed fish species highlights a potential pathway for human exposure through seafood.
Microplastic ingestion by Mullus surmuletus Linnaeus, 1758 fish and its potential for causing oxidative stress
About 27% of striped red mullet caught in the Mediterranean had ingested microplastics, but analysis of their livers showed no significant oxidative stress or cellular damage. The study suggests that at current environmental concentrations, microplastic ingestion by this commercially important fish species does not cause measurable acute harm to organ tissue.
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.
High microplastics concentration in liver is negatively associated with condition factor in the Benguela hake Merluccius polli
Researchers quantified microplastics in gills, liver, and muscle of 94 Benguela hake caught commercially off northwest Africa, finding that high liver microplastic concentrations were negatively correlated with fish body condition, suggesting physiological costs of microplastic accumulation.
Physiological Stress Responses Associated with Microplastic Ingestion in the Benthic Flatfish Bothus podas
Researchers found microplastics in the gastrointestinal tracts of 87.5% of wide-eyed flounder collected near Mallorca, Spain, with an average of nearly four particles per fish. The most common microplastics were fibers made of polyethylene, polypropylene, and polyester. Fish with higher microplastic loads showed signs of oxidative stress and immune responses in their intestinal and liver tissues, suggesting that ingesting microplastics may affect fish health.
Microplastics increase mercury bioconcentration in gills and bioaccumulation in the liver, and cause oxidative stress and damage in Dicentrarchus labrax juveniles
Researchers exposed juvenile European sea bass to mercury, microplastics, and their mixture for 96 hours and found that microplastics increased mercury bioconcentration in gills and bioaccumulation in the liver. The combination of microplastics and mercury also caused greater oxidative stress and lipid damage than either contaminant alone, suggesting microplastics may amplify the toxicity of co-occurring pollutants.
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.
Microplastic ingestion by Atlantic chub mackerel (Scomber colias) in the Canary Islands coast
Researchers examined 120 Atlantic chub mackerel from the Canary Islands and found that 78.3 percent had microplastics in their digestive tracts. Fibers were the most common type of microplastic found, followed by plastic fragments and paint particles. The study represents the first investigation of microplastic contamination in fish from the Northwest African upwelling system, suggesting that this commercially important species could serve as an indicator for microplastic pollution in the region.