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The invasive red swamp crayfish (Procambarus clarkii) as a bioindicator of microplastic pollution: Insights from Lake Candia (northwestern Italy)

Ecological Indicators 2023 86 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

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‪Damià Barceló, Monia Renzi, Giuseppe Esposito, Giuseppe Esposito, Monia Renzi, Serena Anselmi, Giuseppe Esposito, Caterina Faggio, Caterina Faggio, Caterina Faggio, Caterina Faggio, Serena Anselmi, Caterina Faggio, Caterina Faggio, Serena Anselmi, Caterina Faggio, ‪Damià Barceló, ‪Damià Barceló, Marino Prearo, ‪Damià Barceló, Monia Renzi, Caterina Faggio, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, Caterina Faggio, ‪Damià Barceló, ‪Damià Barceló, Serena Anselmi, ‪Damià Barceló, Alessandro Dondo, Paolo Pastorino ‪Damià Barceló, ‪Damià Barceló, Marino Prearo, Paolo Pastorino ‪Damià Barceló, Monia Renzi, Alessandro Dondo, Monia Renzi, Monia Renzi, Caterina Faggio, Caterina Faggio, Caterina Faggio, Serena Anselmi, Caterina Faggio, Monia Renzi, Caterina Faggio, Paolo Pastorino ‪Damià Barceló, Caterina Faggio, Marino Prearo, Monia Renzi, Monia Renzi, Alessandra Pucci, Serena Anselmi, Caterina Faggio, Serena Anselmi, Caterina Faggio, Serena Anselmi, Caterina Faggio, Caterina Faggio, Caterina Faggio, Caterina Faggio, Caterina Faggio, Caterina Faggio, Caterina Faggio, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, ‪Damià Barceló, Paolo Pastorino Paolo Pastorino Paolo Pastorino Monia Renzi, Monia Renzi, Marino Prearo, Marino Prearo, Giuseppe Esposito, Elisabetta Pizzul, Elisabetta Pizzul, Elisabetta Pizzul, Alessandro Dondo, Alessandra Pucci, Serena Anselmi, Serena Anselmi, Serena Anselmi, Caterina Faggio, Paolo Pastorino ‪Damià Barceló, Caterina Faggio, Caterina Faggio, Marino Prearo, ‪Damià Barceló, Monia Renzi, Caterina Faggio, Elisabetta Pizzul, ‪Damià Barceló, Serena Anselmi, Caterina Faggio, Marino Prearo, Monia Renzi, ‪Damià Barceló, Monia Renzi, ‪Damià Barceló, Monia Renzi, Alessandro Dondo, ‪Damià Barceló, Monia Renzi, Paolo Pastorino Serena Anselmi, Caterina Faggio, Monia Renzi, Caterina Faggio, Marino Prearo, Monia 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Summary

Researchers investigated whether the invasive red swamp crayfish could serve as a bioindicator species for tracking microplastic pollution in freshwater ecosystems. They found the same types of microplastics in the crayfish digestive tracts as in surrounding water and sediment samples from Lake Candia in Italy. The study suggests that monitoring microplastics in crayfish could be a practical way to assess plastic contamination levels in lakes and rivers.

Polymers

PE PET PP

Body Systems

Digestive

Study Type Environmental

Microplastic pollution has become pervasive. Identifying a bioindicator species to track the occurrence and effects of microplastics (MPs) on ecosystems is crucial for determining their impact on the environment. The digestive tract of Procambarus clarkii was thought to be of interest for investigating MPs accumulation in freshwater organisms. Our hypothesis was that the same type of MPs found in abiotic compartments (water and sediment) could be found in P. clarkii, which would make it an ideal candidate for use as a bioindicator of MP pollution in freshwater ecosystems. Water, sediment, and P. clarkii specimens were collected from four sites in a lentic ecosystem (Lake Candia; northwestern Italy) for two consecutive years (2021–2022). The mean MPs abundance was 1.75 ± 0.95 items/m3 in 2021 and 2 ± 0.81 items/m3 in 2022 in the water samples and 6.75 ± 1.5 items/kg and 8 ± 0.81 items/kg in the sediment samples in 2021 and 2022, respectively. In 2021, the average was 0.06 ± 0.07 items/g in the males and 0.05 ± 0.05 items/g in the females; in 2022, the average was 0.04 ± 0.05 items/g and 0.05 ± 0.06 items/g in the males and the females, respectively. MP fibers and fragments (black, white, blue, light blue) of polypropylene and polyethylene terephthalate were found in the biotic and the abiotic compartments. The generalized linear mixed model revealed that the number of items/g was predicted only by total weight: the lowest number of items/g was recorded for crayfish with the highest weight probably due to the feeding habits of P. clarkii. Our findings suggest that the invasive P. clarkii (smaller individuals, in particular) could be a good candidate bioindicator for MP pollution since the same type of MP items were recorded in the abiotic compartments. Further research is needed to better understand the feeding behavior of P. clarkii and the dynamics of MPs in aquatic ecosystems.

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