Effects of 5-HT (serotonin) on reproductive behaviour in <i>Heterodera schachtii </i>(Nematoda)
Bibliographic record
Abstract
The effects of serotonin (5-hydroxytryptamine or 5-HT) on the reproductive behaviour of Heterodera schachtii was examined. Male and juvenile H. schachtii were incubated in 5-HT for 15 min. Stylet thrusting was stimulated by 10 mM 5-HT, whereas 0.1 mM 5-HT was without effect. Prolonged treatment of males with 10 mM 5-HT induced eversion of the spicules and extrusion of materials from the reproductive tract. Treatment with 60 mM triethanolamine and Wright's stain indicated that extrusions did not contain spermatids or spermatozoa. We confirm the effects of 5-HT on reproductive behaviour and suggest that the stylet and pharynx may subserve a reproductive function during later life stages in H. schachtii.
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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 | 0.000 |
| 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) | 0.001 | 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".