Mechanisms of maternal transfer of organochlorine contaminants and mercury in the common thresher shark (<i>Alopias vulpinus</i>)
Bibliographic record
Abstract
A putative mechanism for maternal transfer of organic contaminants and total mercury was empirically demonstrated in a near-term pregnant female common thresher shark (Alopias vulpinus). Contaminants were measured in the liver and muscle tissue of the mother and her four embryos, as well as the embryos’ stomach contents. Concentrations of organic contaminants and mercury were found to be lower in the embryos’ livers than in the mother’s and were clearly measurable in the embryo stomach contents, which consisted of consumed ovulated eggs. Presence of high concentrations of organic contaminants and mercury in embryos, prior to any exogenous exposure, provides clear evidence of maternal offloading in this species. In addition, the detection of these chemicals in the yolky stomach contents provides a mechanism by which oophagous elasmobranch females offload contaminants onto their young.
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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 | 0.001 | 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 | 0.000 | 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 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".