Bibliographic record
Abstract
Survival is the greatest imperative of any life form, and the apodid holothuroid echinoder (Chiridota laevis) exemplifies this in a remarkable manner. This small, 40–50 mm long, soft-bodied sea cucumber (top) normally spends its time hidden underneath rocks in the shallow waters of the North Atlantic. However, a recent discovery showed that C laevis is resourceful in the face of danger. When sensing a threat to the integrity of its body, such as a bite or a tear, the sea cucumber can quickly pinch itself and split apart in a matter of seconds. This response begins with an anterior inflation, followed by the appearance of a constriction collar that rapidly elongates and thins, ultimately leading to the physical separation of the front and back body segments (bottom) in less than 30 seconds. Although potentially costly (from an energetic perspective), this reaction presumably acts either as a countermeasure or as wound limitation, shifting the threat away from the vital anterior body section. The rapidity of the process makes it an autotomic response rather than the much slower process of fissiparous (asexual) reproduction, which has been documented in echinoderms. However, autotomy usually involves the defensive shedding of non-essential body parts (a tail or arm, for example) in a controlled manner, whereas mid-body autotomy has – to the best of our knowledge – never been previously reported in unsegmented animals. The mechanisms and evolutionary advantages behind this impressive behavior remain an enigma.
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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.001 | 0.004 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.148 | 0.055 |
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".