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Effects of microplastic ingestion in Dicentrarchus labrax (Linnaeus, 1758) intestine health
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This master's thesis investigated how ingested microplastics affect intestinal health in European sea bass (Dicentrarchus labrax), a commercially important fish species. The research addresses gaps in understanding how microplastic exposure causes intestinal damage in farmed and wild fish relevant to seafood safety.
Master en Cultivos Marinos 2018-2020. Diploma de Master of Science en Acuicultura otorgado por el Centro Internacional de Altos Estudios Agronomicos Mediterraneos (CIHEAM)
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Intestinal alterations in European sea bass Dicentrarchus labrax (Linnaeus, 1758) exposed to microplastics: Preliminary results
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Researchers fed European sea bass diets containing virgin and pollutant-contaminated PVC microplastic pellets for 90 days and examined the effects on their intestines. They found moderate tissue damage and increased mucus cell activity in fish exposed to both types of microplastics, with pollutant-laden particles causing the most pronounced changes. The study provides early evidence that chronic microplastic ingestion can alter gut health in commercially important fish species.
Microplastic in Gastrointestinal Tracts of European Sea Bass
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This study examined microplastics found in the gastrointestinal tracts of European sea bass caught in the Mediterranean. The detection of microplastics in commercially important food fish raises concerns about human dietary exposure through seafood consumption.
Impact of polypropylene microplastics and chemical pollutants on European sea bass (Dicentrarchus labrax) gut microbiota and health
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Researchers investigated how polypropylene microplastics, alone and combined with chemical pollutants, affect the gut health and microbiome of European sea bass. They found that microplastic ingestion altered the gut microbial community composition and that combined exposure with pollutants amplified the harmful effects. The study suggests that microplastics may serve as carriers for toxic chemicals, compounding their impact on fish health and potentially affecting seafood safety.
Evidence of microplastic ingestion by cultured European sea bass (Dicentrarchus labrax)
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Researchers evaluated, for the first time, microplastic presence in farmed European sea bass cultivated in coastal waters of Tenerife, Canary Islands. They found that 65% of the 83 examined fish contained microplastics in their gastrointestinal tracts, demonstrating that cultured fish are also exposed to microplastic contamination, not just wild-caught species.
Dietary administration of PVC and PE microplastics produces histological damage, oxidative stress and immunoregulation in European sea bass (Dicentrarchus labrax L.)
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Researchers fed European sea bass diets containing PVC and polyethylene microplastics for three weeks and examined the effects on their organs and immune systems. They found significant tissue damage in the liver and intestine, along with signs of oxidative stress and altered immune function. The study suggests that even short-to-medium-term microplastic ingestion can compromise fish health, with longer exposures potentially leading to irreversible organ damage.
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