Exposure of the amphipod Hyalella azteca to microplastics. A study on subtoxic responses and particle biofragmentation

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorRani-Borges, Bárbara-
Autor(es): dc.creatorQueiroz, Lucas Gonçalves-
Autor(es): dc.creatorPrado, Caio César Achiles-
Autor(es): dc.creatorde Melo, Eduardo Carmine-
Autor(es): dc.creatorde Moraes, Beatriz Rocha-
Autor(es): dc.creatorAndo, Rômulo Augusto-
Autor(es): dc.creatorde Paiva, Teresa Cristina Brazil-
Autor(es): dc.creatorPompêo, Marcelo-
Data de aceite: dc.date.accessioned2025-08-21T19:14:49Z-
Data de disponibilização: dc.date.available2025-08-21T19:14:49Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.aquatox.2023.106516-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247091-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247091-
Descrição: dc.descriptionMicroplastics are widespread pollutants in the environment and are considered a global pollution problem. Microplastics mostly originate from larger plastics and due to environmental conditions are undergoing constant fragmentation processes. It is important to understand the fragmentation pathways, since they play a key role in the fate of the particles, and also directly influence toxicity. Amphipods are potential inducers of plastic debris fragmentation. Here, Hyalella azteca was exposed to different concentrations (540, 2700, 5400 items/L) of 24.5 µm polystyrene microplastics (PS-MP) for 7 days. After exposure, oxidative stress, particle size reduction, and mortality were checked. No significant mortality was seen in any of the treatments, although changes were recorded in all enzymatic biomarkers analyzed. It was observed that throughout the ingestion and egestion of PS-MP by H. azteca, particles underwent intense fragmentation, presenting a final size up to 25.3% smaller than the initial size. The fragmentation over time (24, 72, 120, 168 h) was verified and the results showed a constant reduction in average particle size indicating that H. azteca are able to induce PS-MP fragmentation. This process may facilitate bioaccumulation and trophic particle transfer.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionRufford Foundation-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University, UNESP, 3 de Março Avenue 511m Sorocaba-
Descrição: dc.descriptionDepartment of Fundamental Chemistry Institute of Chemistry University of São Paulo, USP, Prof. Lineu Prestes Avenue 748-
Descrição: dc.descriptionDepartment of Ecology Institute of Biosciences University of São Paulo, USP, Matão Street 321-
Descrição: dc.descriptionDepartment of Biotechnology School of Engineering University of São Paulo, USP, Municipal do Campinho Road-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University, UNESP, 3 de Março Avenue 511m Sorocaba-
Descrição: dc.descriptionCNPq: 303660/2016–3 301559/2018–0-
Descrição: dc.descriptionRufford Foundation: 32839–1-
Idioma: dc.languageen-
Relação: dc.relationAquatic Toxicology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFragmentation-
Palavras-chave: dc.subjectFreshwater amphipod-
Palavras-chave: dc.subjectIngestion-
Palavras-chave: dc.subjectOxidative stress-
Palavras-chave: dc.subjectPolystyrene-
Título: dc.titleExposure of the amphipod Hyalella azteca to microplastics. A study on subtoxic responses and particle biofragmentation-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.