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| Auteurs principaux: | , , , , , , , |
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| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Environmental science and pollution research international
2025
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| Sujets: | |
| Accès en ligne: | https://pubmed.ncbi.nlm.nih.gov/40442563/ |
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| author | Schafaschek, Ana Marta de Barros, Emily Nentwig Dos Santos, Mariana Perez Dos Santos, Mayara Padovan Grassi, Marco Tadeu de Souza Abessa, Denis Moledo Yamamoto, Flávia Yoshie Navarro-Silva, Mario Antonio |
| author_facet | Schafaschek, Ana Marta de Barros, Emily Nentwig Dos Santos, Mariana Perez Dos Santos, Mayara Padovan Grassi, Marco Tadeu de Souza Abessa, Denis Moledo Yamamoto, Flávia Yoshie Navarro-Silva, Mario Antonio Schafaschek, Ana Marta de Barros, Emily Nentwig Dos Santos, Mariana Perez Dos Santos, Mayara Padovan Grassi, Marco Tadeu de Souza Abessa, Denis Moledo Yamamoto, Flávia Yoshie Navarro-Silva, Mario Antonio |
| collection | PubMed - marine biology |
| contents | Multiple sources of pollutants reaching the Doce River in southeastern Brazil basin and their impact on benthic Diptera (Chironomidae) biology. Schafaschek, Ana Marta de Barros, Emily Nentwig Dos Santos, Mariana Perez Dos Santos, Mayara Padovan Grassi, Marco Tadeu de Souza Abessa, Denis Moledo Yamamoto, Flávia Yoshie Navarro-Silva, Mario Antonio Animals Brazil Water Pollutants, Chemical Chironomidae Environmental Monitoring Rivers Geologic Sediments Larva The collapse of the Fundão Dam, in the Rio Doce Basin (DRB), released tons of metal-rich waste that spread across the basin and reached the sea. Chemicals present in tailings and other sources located along the DRB can influence benthic organisms such as Chironomidae (Diptera). This study aimed to investigate the consequences of subchronic sediment exposure (sampled in the 2019 dry season) from different segments (six sites) of the DRB on Chironomus sancticaroli larvae. Then, the survival rate, development, and intracorporeal inorganic chemical elements were evaluated. Larval survival was significantly reduced after exposure to all six sediments, ranging from 49 to 78%. The development time of larvae were significantly reduced when exposed to sediments, especially in the Upper DRB where the presence of adults was observed earlier. High levels of metals related to mining activities, such as Cd, Fe, and Mn, were detected in larvae, especially in those exposed to upper DRB sediments. Copper and zinc presented the highest biota-sediment bioaccumulation values. The results revealed the impact of complex mixtures of substances from different origins in aquatic macroinvertebrates, reinforcing the need to prevent inorganic and organic chemical elements from multiple sources from reaching rivers. |
| format | Artículo científico |
| id | pubmed_40442563 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Environmental science and pollution research international |
| record_format | pubmed |
| spellingShingle | Multiple sources of pollutants reaching the Doce River in southeastern Brazil basin and their impact on benthic Diptera (Chironomidae) biology. Schafaschek, Ana Marta de Barros, Emily Nentwig Dos Santos, Mariana Perez Dos Santos, Mayara Padovan Grassi, Marco Tadeu de Souza Abessa, Denis Moledo Yamamoto, Flávia Yoshie Navarro-Silva, Mario Antonio Animals Brazil Water Pollutants, Chemical Chironomidae Environmental Monitoring Rivers Geologic Sediments Larva Multiple sources of pollutants reaching the Doce River in southeastern Brazil basin and their impact on benthic Diptera (Chironomidae) biology. Schafaschek, Ana Marta de Barros, Emily Nentwig Dos Santos, Mariana Perez Dos Santos, Mayara Padovan Grassi, Marco Tadeu de Souza Abessa, Denis Moledo Yamamoto, Flávia Yoshie Navarro-Silva, Mario Antonio Animals Brazil Water Pollutants, Chemical Chironomidae Environmental Monitoring Rivers Geologic Sediments Larva The collapse of the Fundão Dam, in the Rio Doce Basin (DRB), released tons of metal-rich waste that spread across the basin and reached the sea. Chemicals present in tailings and other sources located along the DRB can influence benthic organisms such as Chironomidae (Diptera). This study aimed to investigate the consequences of subchronic sediment exposure (sampled in the 2019 dry season) from different segments (six sites) of the DRB on Chironomus sancticaroli larvae. Then, the survival rate, development, and intracorporeal inorganic chemical elements were evaluated. Larval survival was significantly reduced after exposure to all six sediments, ranging from 49 to 78%. The development time of larvae were significantly reduced when exposed to sediments, especially in the Upper DRB where the presence of adults was observed earlier. High levels of metals related to mining activities, such as Cd, Fe, and Mn, were detected in larvae, especially in those exposed to upper DRB sediments. Copper and zinc presented the highest biota-sediment bioaccumulation values. The results revealed the impact of complex mixtures of substances from different origins in aquatic macroinvertebrates, reinforcing the need to prevent inorganic and organic chemical elements from multiple sources from reaching rivers. |
| title | Multiple sources of pollutants reaching the Doce River in southeastern Brazil basin and their impact on benthic Diptera (Chironomidae) biology. |
| topic | Animals Brazil Water Pollutants, Chemical Chironomidae Environmental Monitoring Rivers Geologic Sediments Larva |
| url | https://pubmed.ncbi.nlm.nih.gov/40442563/ |