Initial Characterization of Embryonic Development in North American Burbot
Bibliographic record
Abstract
Abstract Declining wild populations and increasing commercial interest are encouraging development of aquaculture methods for the North American Burbot Lota lota maculosa. A current focus of Burbot aquaculture research is reducing high mortality that is typically associated with culture of Burbot embryos and larvae. However, no Burbot embryonic or larval staging systems are currently available to provide a comparative baseline for studies of these life stages. To help address this gap, we examined Burbot embryonic development from egg fertilization until the onset of the larval period at first feeding. Ontogeny was characterized using diagnostic morphological features visible with stereo microscopy. Six developmental periods were characterized (cleavage, blastula, gastrula, segmentation, swim bladder inflation, and first feeding), along with 15 developmental stages. Water temperature ranged from 3°C to 5°C for the duration of this study. Cleavage cycles were approximately 8 h/division. Segmentation began at 12 d postfertilization (DPF) and continued until first hatch at 33 DPF. First feeding was observed at 45 DPF, 12 d after first hatch. Results presented here are expected to help refine Burbot culture methodology and research efforts aimed at conservation, management, and commercial production. Future research should use additional cohorts and expose embryos to a range of culture conditions to better understand the factors governing embryonic survival and variability in the timing of events during development.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".