Spatial and temporal variation in size at maturity for female American lobster in Nova Scotia
Bibliographic record
Abstract
Using the development stage of cement glands to predict spawning, maturity ogives were constructed for six fishing ports in eastern Nova Scotia. The size at which 50% of females attained maturity (L 50 ) and the ogive slopes were compared between locations and years. Among ports within years, 21 of 25 L 50 pairs were significantly different, while only 5 of 24 slope pairs were different. These results fill a geographic gap and indicate that most of the areas should not be grouped when calculating egg production. Comparing among years within ports, most significant differences were again for L 50 rather than slopes. In two ports, the change in the ogive among years gave a 2- or 2.4-fold change in eggs per recruit and a 2.9- or 5-fold change in the percentage of females that reach maturity by the legal minimum size. On a larger scale, L 50 was intermediate in Newfoundland, consistently low throughout the southern Gulf of St. Lawrence, abruptly increased on the outer coast of Nova Scotia into the Bay of Fundy, and again intermediate inshore and offshore New England.
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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 | 0.000 | 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".