Baseline levels of biomarkers of oxidative damage in Odontesthes nigricans (Pisces, Atherinopsidae) from two coastal areas of the Beagle Channel, Argentina
Bibliographic record
Abstract
We assessed several biomarkers of oxidative damage on silversides Odontesthes nigricans from Varela and Golondrina bays, located on the North shore of the Beagle Channel (Tierra del Fuego, Argentina) and we tried to relate those responses to environmental data.Varela bay is visited mostly by local fi shermen and tourism during the spring-summer season; on the other hand Golondrina bay is a low urban impacted area, despite the population's growth around it.We employed the condition factor as general biomarker of fi sh health and quantifi ed biomarkers of oxidative damage in gills and liver.Fishes from Golondrina bay showed a better condition as compared to those from Varela bay.The activity of enzymatic antioxidants and the content of non-enzymatic antioxidants were lower in gills than in the liver, independently of the sampling site.No signifi cant differences were found between sites in the gills.However, an increase in catalase and superoxide dismutase activities and a decrease in GSH/GSSG ratio were observed in the liver of fi shes from Varela bay, possibly being due to higher levels of environmental natural stresses, mainly metals in sediments.This study indicates an organ-dependent response and establishes different baseline levels of biochemical parameters for each bay that could be considered as values of normal homeostasis for wild silversides.
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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 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".