The Benthic and Pelagic Habitats of the Red Crab, Pleuroncodes planipes
Bibliographic record
Abstract
described anomuran crab were washed ashore at Monterey, California. These, along with some similar animals found in oceanic waters ( 24°N, 130 0 W) , were sent to William Stimp-son, who was describing the crustacean ma-terial collected by the N orth Pacific Exploring Expedition. Stimpson described both the Mon-terey and the high seas specimens as a new genus and a new species, Ples roncodes planipes, assigned to the family Galatheidae (Stimpson, 1860). The "red crab " or "pelagic crab " (Fig. 1) is familiar to inhabitants of Baja California and occasionally is seen along southern Cali-fornia beaches, where large numbers of these animals are at times washed up and left stranded by receding tides. Thei r brill iant red coloration, together with their relatively large size, makes such occurrences of these animals a striking phenomenon. The present study was undertaken as an investigation into the pelagic distribut ion and possible benthic nature of the species; pr ior to this study P. planipes was believed to be only planktonic. Members of the family Galatheidae are typi-cally benthic when adult and are commonly known as "squat lobsters. " Larvae of all the species are pelagic for at least a short time, and presumably the small postlarvae can alter-nate between the plankton and the benthos be-fore assuming an exclusively benthic life. Two antarctic species, M ttnida gregaria ( Fabricius) 1793 and M. sttbmgosa (W hi te) 1847, may be either pelag ic or benthic as adults, but are more commonly benthic (Matthews, 1932). The young of M. gregaria- the so-called Grim othea stage-are predominantly pelagic and have been reported on several occasions as so numerous that they color the sea bright red over large areas (Matthews, 1932; Bary, 1953). P. planipes probably has evolved from stock that was benthic, for of the 230 described 1 Institu te of Oceanography, D alhous ie Un iversity, Halifax, Nova Scotia. Manuscript received July 21,
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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 | 0.001 | 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) | 0.004 | 0.001 |
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".