Sediment contamination in two German estuaries: A biomarker-based toxicity test with the ragworm Hediste diversicolor under intermittent oxygenation.
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| Autores principales: | , , , , |
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Environmental research
2025
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| _version_ | 1868266275361259521 |
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| author | Pham, Duy Nghia El Toum, Safia Martineau, Raphaëlle Heise, Susanne Sokolova, Inna M |
| author_facet | Pham, Duy Nghia El Toum, Safia Martineau, Raphaëlle Heise, Susanne Sokolova, Inna M Pham, Duy Nghia El Toum, Safia Martineau, Raphaëlle Heise, Susanne Sokolova, Inna M |
| collection | PubMed - marine biology |
| contents | Sediment contamination in two German estuaries: A biomarker-based toxicity test with the ragworm Hediste diversicolor under intermittent oxygenation. Pham, Duy Nghia El Toum, Safia Martineau, Raphaëlle Heise, Susanne Sokolova, Inna M Animals Geologic Sediments Estuaries Biomarkers Polychaeta Germany Water Pollutants, Chemical Oxygen Toxicity Tests Environmental Monitoring Metals, Heavy Toxicity testing is an important tool for risk assessment of sediment contamination in estuaries. However, there has been a predominant focus on fitness parameters as toxic endpoints and on crustaceans as test organisms, while effects at the sub-organismal level and on other benthic taxa have received less attention. Also, interactions between sediment contamination and natural stressors such as oxygen are often neglected in traditional toxicity tests. Here we conducted a toxicity test of sediments from the Elbe and Oder (Odra) estuaries under three weeks of continuous and intermittent oxygenation, using biomarkers in an annelid, the ragworm Hediste diversicolor. Contaminated sediments affected worm survival and some biomarkers of antioxidant defense, electrophilic stress, and energy status with response ratios of above 20%. Toxic effects were most pronounced in sediments from the upper Elbe estuary, which contained high levels of heavy metals and organic chemicals. Oxygen regimes hardly changed the sediment effects, suggesting the robustness of the biomarker-based toxicity test with ragworms. |
| format | Artículo científico |
| id | pubmed_39608433 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Environmental research |
| record_format | pubmed |
| spellingShingle | Sediment contamination in two German estuaries: A biomarker-based toxicity test with the ragworm Hediste diversicolor under intermittent oxygenation. Pham, Duy Nghia El Toum, Safia Martineau, Raphaëlle Heise, Susanne Sokolova, Inna M Animals Geologic Sediments Estuaries Biomarkers Polychaeta Germany Water Pollutants, Chemical Oxygen Toxicity Tests Environmental Monitoring Metals, Heavy Sediment contamination in two German estuaries: A biomarker-based toxicity test with the ragworm Hediste diversicolor under intermittent oxygenation. Pham, Duy Nghia El Toum, Safia Martineau, Raphaëlle Heise, Susanne Sokolova, Inna M Animals Geologic Sediments Estuaries Biomarkers Polychaeta Germany Water Pollutants, Chemical Oxygen Toxicity Tests Environmental Monitoring Metals, Heavy Toxicity testing is an important tool for risk assessment of sediment contamination in estuaries. However, there has been a predominant focus on fitness parameters as toxic endpoints and on crustaceans as test organisms, while effects at the sub-organismal level and on other benthic taxa have received less attention. Also, interactions between sediment contamination and natural stressors such as oxygen are often neglected in traditional toxicity tests. Here we conducted a toxicity test of sediments from the Elbe and Oder (Odra) estuaries under three weeks of continuous and intermittent oxygenation, using biomarkers in an annelid, the ragworm Hediste diversicolor. Contaminated sediments affected worm survival and some biomarkers of antioxidant defense, electrophilic stress, and energy status with response ratios of above 20%. Toxic effects were most pronounced in sediments from the upper Elbe estuary, which contained high levels of heavy metals and organic chemicals. Oxygen regimes hardly changed the sediment effects, suggesting the robustness of the biomarker-based toxicity test with ragworms. |
| title | Sediment contamination in two German estuaries: A biomarker-based toxicity test with the ragworm Hediste diversicolor under intermittent oxygenation. |
| topic | Animals Geologic Sediments Estuaries Biomarkers Polychaeta Germany Water Pollutants, Chemical Oxygen Toxicity Tests Environmental Monitoring Metals, Heavy |
| url | https://pubmed.ncbi.nlm.nih.gov/39608433/ |