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Dietary rayon microfibers differentially reshape rearing water and host associated microbiomes of farmed European sea bass (Dicentrarchus labrax)

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Fernando Naya-Català, Fernando Naya-Català, Fernando Naya-Català, Fernando Naya-Català, Fernando Naya-Català, Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Fernando Naya-Català, Ricardo Domingo-Bretón, Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Ricardo Domingo-Bretón, Ricardo Domingo-Bretón, Lúcia Guilhermino Ricardo S. Matias, Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Ricardo S. Matias, Lúcia Guilhermino Ricardo S. Matias, Ricardo S. Matias, Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Josep Àlvar Calduch-Giner, Lúcia Guilhermino Josep Àlvar Calduch-Giner, Josep Àlvar Calduch-Giner, Lúcia Guilhermino Josep Àlvar Calduch-Giner, Lúcia Guilhermino Lúcia Guilhermino Álvaro Belenguer, Álvaro Belenguer, Álvaro Belenguer, Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Federico Moroni, Lúcia Guilhermino Lúcia Guilhermino Sónia Gomes, Lúcia Guilhermino Sónia Gomes, Sónia Gomes, Sónia Gomes, Sónia Gomes, Lúcia Guilhermino Sónia Gomes, Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Lúcia Guilhermino Federico Moroni, Federico Moroni, Lúcia Guilhermino Federico Moroni, M. P. Valente Luísa, M. P. Valente Luísa, M. P. Valente Luísa, M. P. Valente Luísa, M. P. Valente Luísa, M. P. Valente Luísa, Lúcia Guilhermino Jaume Pérez-Sánchez, Lúcia Guilhermino M. Mingarro, Jaume Pérez-Sánchez, Jaume Pérez-Sánchez, Lúcia Guilhermino

Summary

Researchers found that feeding European sea bass rayon microfibers — a type of textile microplastic — disrupted the bacteria living in the fish's gut and in the surrounding water in a dose-dependent way. This shows that microplastic ingestion can alter the microbial communities of farmed fish, with potential implications for aquaculture health and food safety.

This study revealed a concomitant dose-dependent and dose-threshold response among the bacterial communities composing the holobiont of European sea bass in response to dietary RFs ingestion, highlighting novel bacterial taxa and pathways through which microplastic exposure may differentially reshape rearing water and host-associated microbial communities.

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