Interannual variability in feeding rate and niche breadth of radiated shanny (Ulvaria subbifurcata) larvae from coastal Newfoundland
Bibliographic record
Abstract
Using 6 years of data for radiated shanny (Ulvaria subbifurcata) larvae from coastal Newfoundland, we examine relationships between prey availability, specific consumption rates (SPC) and niche breadth (S) as a function of both larval size and cohort. We also examine the extent to which specific consumption rates correlate with interannual variations in otolith-based estimates of average growth rate (mm day−1) and variability in individual growth rates. In all years, we observed an ontogenetic dietary shift, from nauplii to larger copepods, as the Ulvaria larvae grew. There were significant differences in SPC both across size categories and among years. There was also a significant increase in S with increasing body size in most years. There was a positive, but variable, correlation between SPC and average growth rates for small- and intermediate-sized fish, but no significant relationship with variability in individual growth rates. Overall, we found that foraging success increased with larval size, whereby the majority of large larvae were feeding above maintenance levels while small larvae fed at or below maintenance levels. Food limitation may therefore be an important factor that directly affects the mortality of small, but not necessarily large, larvae. Coupled with the observed ontogenetic change in diet, quantifying the relationship between food availability and larval growth will thus depend not only on prey availability, but also on the size-based foraging abilities of larval fish.
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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 | 0.000 | 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) | 0.001 | 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".