Bibliographic record
Abstract
Genus Aristias Boeck, 1871 Aristias Boeck, 1871: 106. — Stebbing, 1906: 49. — Hurley, 1963: 40, 41 (key). —J.L. Barnard, 1969: 324. — Lincoln, 1979: 60. — Barnard & Karaman, 1991: 465. — Lowry & Stoddart, 1997: 14. Type species. Anonyx tumidus Krøyer, 1846, by monotypy. Diagnosis (modified after Lowry & Stoddart 1997). Head deeper than long. Epistome and upper lip fused. Mandibles usually asymmetrical, left straight, minutely serrate, right straight or slightly convex, smooth; left lacinia mobilis minute or absent; accessory setal row well developed or absent, if present with more than 5 accessory setae; molar a small, weakly setose flap or absent. Maxilla 1 inner plate strongly setose, usually with more than 2 pappose setae, outer plate broad, setal teeth in a modified 7/4 arrangement; palp 2-articulate. Maxilliped outer plate without apical robust setae; palp well-developed, 4-articulate. Gnathopod 1 simple to parachelate, coxa vestigial, posterior margin of propodus serrate. Gnathopod 2 coxa well developed. Pereopods 3–7 simple, propodus usually with a distal spur. Pereopod 4 deeper than wide with weak posteroventral lobe. Pereopod 5 coxa with well-developed posteroventral lobe. Gills from gnathopod 2 to pereopod 6, not pleated. Telson moderately to deeply cleft. Species composition and distributions. Aristias includes 28 species worldwide. Antarctic and sub- Antarctic: A. antarcticus Walker, 1906 (Cape Adare; Commonwealth Bay; Davis Sea, Kerguelen Islands; Magellan area; Ross Sea; South Georgia; South Shetland Islands; Weddell Sea); A. collinus K.H. Barnard, 1932 (South Shetland Islands; Weddell Sea); A. excavatus sp. nov. (Ross Sea). Atlantic Ocean and Arctic: A. bicornuta Ortiz, Lalana & Varela, 2007 (Cuba); A. captiva Lowry & Stoddart, 1997 (Gulf of Mexico); A. commensalis Bonnier, 1896 (Bay of Biscay); A. falcatus Stephensen, 1923 (S.W. of the Faeroe Islands); A. megalops G.O. Sars, 1895 (Norway); A. microps G.O. Sars, 1895 (Norway); A. neglectus Hansen, 1888 (widespread along European coasts from the Adriatic to Norway); A. topsenti Chevreux, 1900 (Newfoundland); A. tumidus (Krøyer, 1846) (Arctic Ocean). Indian Ocean: A. madagascarensis Ledoyer, 1972 (Madagascar); A. stenopodus Ledoyer, 1986 (Madagascar); A. symbioticus K.H. Barnard, 1916 (South Africa; Madagascar). Pacific Ocean: A. adrogans J.L. Barnard, 1964 (Alaska); A. coriolis Lowry & Stoddart, 1993 (Philippines); A. curtipes Gurjanova, 1962 (Pacific Ocean, west of Japan); A. expers J.L. Barnard, 1967 (Baja California); A. japonicus Gurjanova, 1962 (Sea of Japan); A. nonspinus Hirayama, 1985 (Japan); A. pacificus Schellenberg, 1936 (Japan; Vancouver Island); A. spinipes Gurjanova, 1962 (east of Kamchatka Peninsula); A. thio Lowry & Stoddart, 1994 (New Caledonia); A. tropicus Schellenberg, 1938 (Bismarck Archipelago, Papua New Guinea); A. uokonia Lowry & Stoddart, 1994 (New Caledonia); A. veleronis Hurley, 1963 (Puget Sound); A. verdensis Lowry & Stoddart, 1993 (Philippines). Known fauna associations. A. excavatus sp. nov. is associated with the sponge Myxodoryx hanitschi; A. bicornuta associated with the hexactinellid sponge Lefroyella crispa; A. commensalis associated with a sponge and an asteroid; A. neglectus recorded associations include the brachiopod Terebratulina caputserpentis, the anemone Bolocera tuediae, sponges Geodia spp., and ascidians; A. topsenti, associated with a species of sponge; A. tumidus, associated with the tunicate Molgula retortiformis; A. symbioticus, associated with an ophiuroid and a sponge; A. pacificus, associated with the ascidian Ascidia paratropa.
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) | 0.001 | 0.000 |
| Bibliometrics | 0.004 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.047 | 0.013 |
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".