| Texto completo | |
| Autor(es): |
Pauly, Guacira de Figueiredo Eufrasio
;
Yamamoto, Flavia Yoshie
;
Abessa, Denis Moledo de Souza
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Bulletin of Environmental Contamination and Toxicology; v. 114, n. 3, p. 8-pg., 2025-03-01. |
| Resumo | |
The collapse of the Fund & atilde;o Dam in 2015 caused strong alterations of physical-chemical properties of water bodies in the Rio Doce Basin, including the release of large quantities of metals. This study aimed to evaluate whether water samples collected along the Doce River after dam failure could affect the development of Danio rerio embryos. Water samples were collected immediately and 6 months after the rupture at multiple sites distributed across the river basin, and toxicity tests were conducted using recently fertilized eggs, in 24-well plates. The concentrations of As, Cd, Mn, and Ni in water samples collected immediately after the dam rupture exceeded the limits established by federal standards. No significant lethal or sublethal effects were observed in D. rerio embryos exposed to water samples in both sampling surveys. Based on our results, we hypothesized that although the concentrations of some elements were high, metals were likely not or poorly bioavailable, causing no significant changes in the exposed organisms. (AU) | |
| Processo FAPESP: | 18/23279-4 - Além das medições convencionais: avaliação de efeitos tóxicos em Danio rerio e Corbicula fluminea associados a água e sedimentos contaminados por rejeitos de mineração, liberados após o acidente com a Barragem do Fundão no Rio Doce (ES - MG) |
| Beneficiário: | Guacira de Figueiredo Eufrasio Pauly |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/15229-1 - Avaliação da toxicidade dos poluentes presentes no Rio Doce após rompimento da Barragem do Fundão (MG) através de diferentes biomarcadores em peixes |
| Beneficiário: | Flávia Yoshie Yamamoto |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |