Acid‐base balance and hemolymph gas status in postprandial red rock crabs, Cancer productus, during emersion
Bibliographic record
Abstract
The acid‐base balance and hemolymph gas status (pH, PO 2 , PCO 2 , CCO 2 , lactate, ammonia) were followed in unfed and 12h postprandial red rock crabs. Crabs were subjected to either 6h of aerial exposure followed by 6h re&immersion or 24h aerial exposure. Hemolymph samples were collected anaerobically and variables measured using a blood&gas meter. Hemolymph lactate and ammonia levels were determined photometrically. During 6h of aerial exposure there was a decrease in hemolymph PO 2 and pH with concurrent increases in PCO 2 , CCO 2 and hemolymph lactate and ammonia. Despite a trend towards increased levels during emersion and a slower recovery during re&immersion in postprandial crabs, no significance could be demonstrated. During 24h of aerial exposure hemolymph oxygen levels were quickly exhausted resulting in an increased PCO 2 and a corresponding increase in CCO 2 . Increases in CO 2 were accompanied by increases in hemolymph lactate and ammonia and in a decrease in pH. These differences were more pronounced in the postprandial animals. Although red rock crabs can halt mechanical digestion during emersion, once they have digested the meal and intracellular protein synthesis is underway, the present results suggest that they are committed to these cellular processes. This leads to a greater build&up of metabolites, resulting in a faster mortality rate for postprandial animals during emersion. Support NSF IBN 0313765.
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 | 0.000 | 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".