Systematics and Biology of a New Dracuncoloid Nematode and New Opistholebetid Trematodes in Tetraodontiform Fish
Bibliographic record
Abstract
The systematics and some aspects on the biology of a dracunculoid nematode and opistholebetid trematodes parasitic in tetraodontiforms are presented. Moravecia australiensis Ribu and Lester 2004, a new dracunculoid genus and species, is described from gill filaments of the green porcupine fish Tragulichthys jaculiferus (Cuvier) (Tetraodontiformes: Diodontidae) in Moreton Bay. The absence of a buccal capsule, a divided oesophagus, a functional vulva and a single ovary in females and the presence of caudal alae and spicules in males, are typical characters of the Guyanemidae. This family has four known genera; Guyanema and Travassosnema are exclusively parasites of freshwater fish in South America, Pseudodelphis is a parasite of the tidepool sculpin in Canada and perciform fish in Argentina, and Histodytes in the elasmobranch Raja microocellata off the European Atlantic Coast. Existing species are parasitic in the body cavity except for T. travassosi parasitic in the eye, H. microocellatus in various tissues including gills and P. limnicola in the heart. The new genus differs from these genera by its fine cuticular transverse striations, two forward protruding cephalic elevations, a small mouth surrounded by 6 cephalic papillae arranged in two lateral clusters of three each and a pair of large lateral amphids. The males have only two pairs of pedunculated caudal papillae supporting the caudal alae. A key to the genera of the Family Guyanemidae is presented.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| 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".