Utilizing reflex impairment to assess the role of discard mortality in “Size, Sex, and Season” management for Oregon Dungeness crab (<i>Cancer magister</i>) fisheries
Bibliographic record
Abstract
We found that crab discarded from Oregon (USA) commercial and recreational fisheries for Dungeness crab (Cancer magister) have lower postrelease mortality than previously estimated. This aligns with the goals of the “3-S” management strategy currently employed for these fisheries, to protect discarded sublegal male (Size), female (Sex), and soft-shell (Season) crab. We found that for the commercial ocean Dungeness fishery, overall discard mortality rates (5 days after release) were 0.080 (95% confidence interval: 0.061–0.100) for females; 0.012 (95% confidence interval: 0.002–0.022) for hard-shell males; and 0.092 (95% confidence interval: 0.026–0.157) for soft-shell males. The overall discard mortality rate for the recreational bay fishery (from a boat) was estimated to be 0.009 (95% confidence interval: 0–0.018). A reflex action mortality predictor relationship, which relates reflex impairment to mortality probability, was created and utilized to estimate mortality rates. Our study highlights the importance of looking not only at discard and mortality rates to evaluate 3-S fishery management, but also the mortality- and bycatch-per-retained ratios and temporal trends relative to changes in effort, animal condition, and catch composition.
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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) | 0.000 | 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".