Cadmium bioaccumulation and metallothionein induction in the liver of the Antarctic teleost <i>Trematomus bernacchii</i> during an on-site short-term exposure to the metal via seawater
Bibliographic record
Abstract
A short-term experiment (7 days) was carried out to study cadmium accumulation and metallothionein (MT) gene expression in the liver of the Antarctic teleost Trematomus bernacchii when exposed to 2.0 mg Cd L−1 seawater. Metal determinations were carried out by differential pulse anodic stripping voltammetry while MT gene expression was determined by the Real Time PCR Detection System. In controls, the Cd concentration and the MT gene expression remained practically constant during the experiment (8.8 ± 0.9 µg g−1 d.w. and 1.0 ± 0.2 mRNA a.u., respectively). In exposed organisms, while Cd increased almost linearly with time, up to 30 ± 2 µg g−1 d.w., i.e. by a factor of ∼3.5 in 7 days, MT gene expression, after a little delay, increased almost exponentially up to a value of 86 ± 25 mRNA a.u. after 7 days, by a factor of ∼90. These results confirm the potential usefulness utility of T. bernacchii as a bioindicator of environmental pollution in Antarctica.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".