Sasakia Charonda (Apaturinae: Nymphalidae) and its Three Related Butterfly Larvae Use Halitosis to Repel Predators
Bibliographic record
Abstract
Abstract Accidentally, we discovered that Sasakia charonda (Nymphalidae: Apaturinae) larvae disturbed by ants or humans released volatile compounds from their mouth; thus, we tried to identify these halitosis. We collected halitosis directly from the mouths of S. charonda larvae into volatile-collecting tubes. Trapped halitosis were subjected to gas chromatography-mass spectrometry (GC–MS). We confirmed the identity of eleven substances by comparison to GC of known standards, and inferred them to be mainly alcohols and aldehydes/ketones, with main chains of 4–5 carbons. Three of the chemicals in these halitosis, 2-butanol, 1-penten-3-ol and 3-pentanone, affected the behavior of Pristomyrmex punctatus and Formica japonica ants that co-inhabited the S. charonda rearing cage. We concluded that the substances we identified in this study were used as defensive halitosis, analogous to osmeterium emissions specific to Papilionidae butterflies. Based on smell, Holikawa found that Hestina assimilis and H. persimilis larvae have closely related halitosis. Thus, we also analyzed the halitosis of these two species as well as Apatura metis, another Apaturinae, using the same methods. We found that these species also release halitosis. The composition of the substances of H. assimilis and H. persimilis were somewhat similar to that of S. charonda, whereas that of A. metis differed. Some of the substances also induced defensive behavior in these species of Apaturinae larvae.
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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 | 0.001 | 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".