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Exploring the effect of microparticles on bivalves: Exposure of Mytilus galloprovincialis and Ruditapes philippinarum to both microplastics and silt

Journal of Hazardous Materials 2025 2 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 58 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

‪Damià Barceló, Monia Renzi, Monia Renzi, Monia Renzi, Monia Renzi, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, Francesca Provenza, Monia Renzi, Francesca Provenza, Francesca Provenza, Francesca Provenza, ‪Damià Barceló, Francesca Provenza, Francesca Provenza, Monia Renzi, Francesca Provenza, Monia Renzi, Francesca Provenza, Monia Renzi, Monia Renzi, Monia Renzi, Paolo Pastorino Paolo Pastorino Paolo Pastorino Francesca Provenza, Francesca Provenza, Paolo Pastorino Paolo Pastorino Monia Renzi, Monia Renzi, Monia Renzi, Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Paolo Pastorino Serena Anselmi, Serena Anselmi, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, Francesca Provenza, Francesca Provenza, Monia Renzi, Francesca Provenza, Marino Prearo, Marino Prearo, Marino Prearo, Marino Prearo, Marino Prearo, Marino Prearo, Marino Prearo, Tecla Bentivoglio, 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Monia Renzi, Monia Renzi, Monia Renzi, Monia Renzi, Monia Renzi, Marino Prearo, Marino Prearo, Marino Prearo, Francesca Provenza, Tecla Bentivoglio, Tecla Bentivoglio, Tecla Bentivoglio, Francesca Provenza, ‪Damià Barceló, Tommaso Scirocco, Marino Prearo, ‪Damià Barceló, Serena Anselmi, Monia Renzi, ‪Damià Barceló, Paolo Pastorino Serena Anselmi, ‪Damià Barceló, Marino Prearo, Tommaso Scirocco, ‪Damià Barceló, ‪Damià Barceló, Serena Anselmi, Monia Renzi, Paolo Pastorino ‪Damià Barceló, Paolo Pastorino Serena Anselmi, ‪Damià Barceló, ‪Damià Barceló, Serena Anselmi, Serena Anselmi, ‪Damià Barceló, Marino Prearo, Paolo Pastorino Marino Prearo, Serena Anselmi, ‪Damià Barceló, Serena Anselmi, ‪Damià Barceló, Marino Prearo, Antonietta Specchiulli, Francesca Provenza, Monia Renzi, Francesca Provenza, Monia Renzi, Monia Renzi, Monia Renzi, Monia Renzi, Antonietta Specchiulli, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, Monia Renzi, Monia Renzi, Paolo Pastorino ‪Damià 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Summary

Researchers exposed mussels and clams to polyethylene microplastics, natural silt particles, and a combination of both, finding that the mixture caused significantly worse mortality and oxidative stress than either substance alone. Clams were more sensitive to microplastic exposure than mussels, while mussels retained more microplastics in their tissues. The study reveals that the combined presence of natural sediment particles and microplastics in coastal waters creates synergistic harmful effects on filter-feeding shellfish that are greater than the sum of individual exposures.

Polymers

Body Systems

Digestive

Models

Invertebrate other

Understanding the impacts of suspended sediments and microplastics (MPs) on aquatic organisms is critical, particularly for filter-feeding bivalves such as mussels and clams. Despite their ecological and economic significance, the differential effects of MPs and natural particles on bivalves remain insufficiently studied. This research investigates the impacts of polyethylene (PE) MPs, silt, and their combination on mortality and oxidative stress biomarkers (superoxide dismutase-SOD and malondialdehyde-MDA) in Mytilus galloprovincialis (mussels) and Ruditapes philippinarum (clams). PE exposure caused significant mortality, with clams showing greater sensitivity compared to mussels. In contrast, silt exposure resulted in minimal mortality, reflecting clams' higher tolerance to natural particulate matter. However, combined PE and silt exposure exacerbated mortality in both species, highlighting synergistic effects. Combined exposure also led to a pronounced increase in SOD activity in the digestive glands of mussels and elevated MDA levels in both digestive glands and gills, indicating oxidative damage. Notably, single treatments with PE or silt also caused significant increases in MDA levels in mussels. Species interactions also significantly influenced the biochemical responses of mussels and clams. Overall, mussels showed the higher MP retention capacities, while clams appeared to modulate MP accumulation dynamics. This study advances our understanding of the ecological risks posed by particulate pollutants, particularly MPs, and highlights the importance of investigating the combined effects of multiple stressors in aquatic ecosystems.

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