Morphological and molecular characterization of the ciliate parasite <i>Tetrahymena rostrata</i> infecting the renal organ of the dusky slug (<i>Arion fuscus</i>)
Why this work is in the frame
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Bibliographic record
Abstract
The histophagous ciliate Tetrahymena rostrata (Kahl, 1926) is a facultative parasite of the renal organ of land snails and slugs. The possibility of transovum transmission and the lack of heteroparental sex make T. rostrata an interesting model for studying host specificity and distribution patterns in pathogenic ciliates. We recorded mass Tetrahymena infection in the dusky slug ( Arion fuscus (O.F. Müller, 1774)) collected in Slovakia, Central Europe. Based on the mitochondrial 16S rRNA gene and barcoding cytochrome c oxidase subunit I (COI) sequences, Slovak isolates belong to the TRO-1 subgroup. Strains of T. rostrata, however, do not cluster according to the relatedness of their gastropod hosts, i.e., various phylogenetically unrelated snails and slugs are parasitized by members of both T. rostrata subclades (TRO-1 and TRAUS). Invasion of adult gastropods through the integumentary pouch might be thus a more important transmission way than the transovum route. Geographic distances of T. rostrata isolates are not correlated with divergences in COI sequences. The absence of a clear relationship between genetic and geographic distances might have been, however, also caused by the human-mediated transmission of invasive gastropods.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 it