Mucilage reduces leaf herbivory in Schreber’s watershield, <i>Brasenia</i> <i>schreberi</i> J.F. Gmel. (Cabombaceae)
Bibliographic record
Abstract
Insect herbivores negatively affect plants by consuming biomass that could otherwise be used for growth or reproduction. To reduce their impact, plants have evolved a wide range of antiherbivore defenses. Schreber’s watershield (Brasenia schreberi J.F. Gmel.; Cabombaceae) is a freshwater, aquatic plant that produces a thick mucilage on the underside of leaves and all underwater organs. The mucilage has been proposed as a mechanism of defense against herbivory, but this hypothesis is untested. We conducted a comparative study to determine whether the quantity of mucilage on the underside of leaves is associated with herbivore damage on the leaves. We found that leaves with the thickest mucilage layer were the least damaged. To determine whether mucilage is directly responsible for defense against herbivores, we conducted a manipulative study where we removed the mucilage from the abaxial surface of leaves. We found that demucilated leaves experienced higher amounts of herbivore damage than leaves with their mucilage left intact. We conclude that the mucilage produced by B. schreberi functions to reduce herbivory on leaves, although its association with underwater herbivores and its specific antiherbivore properties remain unknown.
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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".