Rhabdochona zacconis Yamaguti 1935
Bibliographic record
Abstract
Rhabdochona zacconis Yamaguti, 1935 Fig. 11 Syn.: Rhabdochona marinum Roytman, 1963. Host: Big-scaled redfin, Tribolodon hakonensis (Cyprinidae, Cypriniformes). Site of infection: Intestine. Locality: Takahara River (a tributary of the Jinzu River), Hida, Gifu Prefecture, Honshu, Japan (collected 1 June 2009). Prevalence and intensity: 13% (3 fish infected, 16.0– 19.4 cm TL/23 fish examined, 14.0– 21.8 cm TL); 1–5 (mean 2) nematodes per fish. Deposition of voucher specimens: IPCAS N-38. Remarks. The morphology of the present specimens is in full agreement with the redescription of R. zacconis provided by Moravec (1975) and Moravec et al. (1981), based on LM examination of specimens from the same host species (T. hakonensis) in Japan. Therefore, we refrain from describing these nematodes. However, the SEM study, used for the first time in this species, made it possible to confirm some features (e.g. cephalic papillae, amphids, arrangement of anterior prostomal teeth, presence of sublabia, shape of deirids, distribution of genital papillae) that are not easily visible using LM (Fig. 11). Rhabdochona zacconis is known to be distributed in Japan, eastern Russia and western Canada, parasitising cypriniform fishes of the genera Catostomus Lesueur (Catostomidae), Tribolodon Sauvage and Zacco Jordan et Evermann (both Cyprinidae) (Moravec 1975, Moravec et al. 1981, Arai and Mudry 1983, Arai and Smith 2016). In Japan, this parasite was previously recorded by Yamaguti (1935) from Zacco platypus (Temminck et Schlegel) in Nagano Prefecture, Honshu, by Moravec et al. (1981) from T. hakonensis and Z. platypus in Hokkaido (Lakes Akan and Shikotsu [reported erroneously as Chitose, see Nagasawa 2017] and Chihase River) and Honshu (Lake Biwa) (see also Moravec 1975), by Moravec and Nagasawa (1989) from T. hakonensis from several localities in Hokkaido and Honshu, and by Moravec et al. (1998) from T. hakonensis in the Okitsu River, Shizuoka Prefecture, Honshu, where they studied the seasonal maturation cycle of R. zacconis in this host. This parasite was recorded from eastern Russia (Sea of Japan, Putiyatin Island) and reported by Russian authors as Rhabdochona denudata (Dujardin, 1845) or as R. marinum from Tribolodon brandtii (Dybowski) (see Moravec 1975). Rhabdochona zacconis was also reported from Catostomus macrocheilus Girard in British Columbia, western Canada (Arai and Mudry 1983, Arai and Smith 2016).
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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) | 0.001 | 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 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
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".