Bibliographic record
Abstract
Alpheus pacificus Dana, 1852 sensu lato Alpheus pacificus Dana, 1852a: 21; Dana, 1852b: 544; De Man, 1911: 427; Tiwari, 1965: 315; Banner & Banner, 1966a: 143; Banner & Banner, 1978: 227; Banner & Banner, 1982: 217; Banner & Banner, 1985: 26; Chace, 1988: 45. (?) Alpheus gracilidigitus Miers, 1884: 287. CMBS material. None. Additional material. Strait of Singapore. 1 male, 1 ov. female, ZRC 2008.0634, Siglap, no further data, VI.1933; 1 male, ZRC 2000.1443, East Coast, leg. K.L. Yeo, 08 May 2000; 1 male, ZRC 2014.0654, Singapore sta. JL04 D206, VI.2004, no further data. Distribution. Indo-Pacific, from the Red Sea and South Africa to Japan, Korea, Indonesia, Australia, Hawaii, French Polynesia, Rapa Nui, Clipperton, Galapagos, and Mexico to Panama. Previous records from Singapore. None. Ecology. Rocky shores and mixed sand-rock-rubble bottoms in shallow water, usually under rocks or in dead corals, apparently preferring well-washed clean sands of beaches exposed to wave action; most common in intertidal and shallow subtidal, sometimes down to 20 m. Remarks. Variation in some morphological features and colour patterns in material identifiable as Alpheus pacificus (Banner & Banner, 1982; A. Anker, pers. obs.) suggest that this taxon is a complex of several cryptic species. Preliminary analyses of the barcoding part of the COI gene showed that A. pacificus is composed of three genetically well-defined clades, each most likely corresponding to a distinct species (A. Anker, in study). Thus, A. pacificus will need a careful taxonomic revision, with reappraisal of the status of A. gracilidigitus Miers, 1884, currently a junior synonym. For the time being, all Indo-Pacific material has to be identified as A. pacificus sensu lato. The Singaporean material of A. pacificus was collected in the intertidal areas of Siglap and East Coast in the early 2000s. The species has not been collected during the more recent intertidal surveys (CMBS 2012–2014), although one ovigerous female with regenerated chelipeds was seen (but not collected) at Labrador Beach in March 2014 (A. Anker, pers. obs.). It seems that A. pacificus is becoming rare in Singapore due to its preference for well-washed and clean sand-rock bottoms, which are now increasingly being replaced by silt and fine sand.
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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.004 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.030 | 0.016 |
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".