Biomonitoramento da bacia hidrográfica do médio Rio Iguaçu em União da Vitória, PR, utilizando biomarcadores de contaminação ambiental
Bibliographic record
Abstract
Most Brazilian water bodies receive inappropriate disposal of sewage and agricultural and industrial waste.In the Middle Iguau region, the focus is of economic and environmental nature, mainly because of the fact that the water is used for the public supply.Therefore, evaluation of the environmental integrity in this river are essential to understand the possible pollution sources that might affect the quality of the water that is used and the xenobiotics that stand out in the commitment of the biota.The first goal of this study was to monitor the response of Astyanax bifasciatus specie through a set of biochemical biomarkers in liver, brain and axial muscle and genetic biomarker in erythrocytes, together with physical and chemical analysis of the water including emerging contaminants in the Iguau River, in the Middle Iguau region.Furthermore, ecotoxicological tests with Daphnia magna and Desmodesmus subspicatus were used to understand toxic effects of the water in other organisms.Thus, the water quality was evaluated during three seasonal seasons to understand the changing in the biota among seasonal seasons and anthropic action.The second goal was to evaluate sublethal effects in healthy fish exposed to the Iguau River's water.In this context, metal in the water and in the animals muscle was analyzed.The result confirmed the importance of the biomarkers use to evaluate environmental pollution effects on aquatic biota, and also showed that the river's water has xenobiotics that causes neurotoxicity effects and oxidative stress in fish.The activities of acetylcholinesterase, glutathione, glutathione Stransferase and glutathione peroxidase responded to seasonal changes in addition to stressor agents in water.Caffeine was the identified emergent contaminant during the biomonitoring, characterizing aquatic pollution by domestic wastewater.In analyzed animal tissues was verified aluminum concentration, a metal without considerations to fish in Brazilian legislation.The exposed fish demonstrated similar responses to neurotoxicity, oxidative stress and membrane damage, which was attributed to water quality and the possible mixture of contaminants available to the biota.The study shows the necessity of discussing the pollution sources in the jurisdictional limits, as well as the ways to mitigate water pollution in the region.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".