| Texto completo | |
| Autor(es): |
Stefanelli-Silva, Gabriel
;
de Melo, Marcelo R. S.
;
Pascoal, Diego R. C.
;
Dipold, Jessica
;
Wetter, Niklaus U.
;
Freitas, Anderson Z.
;
Taniguchi, Satie
;
Montone, Rosalinda C.
;
Sumida, Paulo Y. G.
Número total de Autores: 9
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Marine Pollution Bulletin; v. 224, p. 10-pg., 2025-12-19. |
| Resumo | |
The deep sea is a historical sink for litter, but efforts to assess the human footprint in this ecosystem are relatively recent. Building upon previous works on the continental margins of the Southern Hemisphere, this study presents the first report of microplastics (MPs) and persistent organic pollutants (POPs) for the Southwestern Atlantic deep-sea floor. Ingestion of MPs by benthic invertebrates, and contamination by polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in demersal teleostean fish and sediments were recorded in the central Santos Basin, along the Brazilian continental slope, between 400 and 1503 m depth. Individuals from 9 invertebrate species (n = 61 organisms) had their gut content examined, with 3 species ingesting anthropogenic particles shaped like fibers (n = 23 fibers). The sea cucumber Deima validum was the most contaminated species, with 1.64 +/- 0.70 fiber individual-1, and 54.54 % of individuals ingesting fibers. Five fibers were identified as MPs, composed of polyamide, polyacrylonitrile, polyaryletherketone, polystyrene and polysulfide synthetic rubber. Total PCBs in the fish (n = 14 organisms) ranged from 519 to 7636 ng g-1 (lipid weight), and from 1.28 to 3.96 ng g-1 (dry weight) in the sediments. Among the PBDEs investigated, only BDE-47 and BDE-99 were found, and only in the fish. While additional work is needed to ascertain the possible origin and ecological implications of MPs and POPs found at the bottom of the ocean, this study provides critical data on pollution levels for the deep-sea community of Southeastern Brazil. (AU) | |
| Processo FAPESP: | 18/19278-2 - Os microplásticos e os poluentes orgânicos persistentes bioacumulam ao longo da teia trófica de profundidade? |
| Beneficiário: | Gabriel Stefanelli Silva |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 21/04334-7 - Espectroscopia Raman de nanopartículas: substratos para detecção ultrassensível e validação de metodologia para caracterização físico-química de nanoplásticos com análise de interações fisiológicas em cultivos celulares |
| Beneficiário: | Niklaus Ursus Wetter |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/04098-6 - EMU concedido no processo 11/50185-1: estereomicroscópio Leica M205C |
| Beneficiário: | Paulo Yukio Gomes Sumida |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 17/12909-4 - Diversidade e evolução de peixes de oceano profundo: DEEP-OCEAN |
| Beneficiário: | Marcelo Roberto Souto de Melo |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores |
| Processo FAPESP: | 18/19240-5 - Equipamento multiusuário (EMU) concedido no processo 2017/50332-0: sistema de análise STM-AFM Raman SNOM |
| Beneficiário: | Anderson Zanardi de Freitas |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 21/11316-5 - Desenvolvimento de uma análise nano-espectroscópica (TERS, STM & n-Raman) de nanoplásticos. |
| Beneficiário: | Allan Bereczki |
| Modalidade de apoio: | Bolsas no Brasil - Programa Capacitação - Treinamento Técnico |