The diurnal migration of peamouth club Mylocheilus caurinus (Richardson) in Nicola Lake, British Columbia
Bibliographic record
Abstract
Diurnal migration of adult peamouth chub was studied in Nicola lake. Results are taken from over two hundred gill net sets in 1959 during which time more than five thousand chub were netted. A migration surfaceward and shoreward occurred in evening and a reverse migration in morning. Diurnal migration was characteristic of the summer. Chub during winter had constant close association with the bottom at which time bottom organisms were the main food item. Onset of diurnal migration in summer was accompanied by increase in importance of plankton and chironomid pupae in the diet. Adults of all sizes and both sexes performed similar diurnal migrations but young-of-the-year chub showed the reverse migration, inhabiting shallow shore waters by day and dispersing to deep water by night. Inversion in behaviour occurred at about one year of age. Adult migration was unrelated to oxygen or temperature changes but timing of migration and depth distribution of chub was closely associated with light intensity, adults avoiding brightly illuminated areas. A diurnal change in diet accompanied the migration. In August food items changed from plankton during day to chironomid larvae and pupae in evening and night. Adaptive value of the migration is discussed in relation to physical and biotic characteristics of the environment.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 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".