A new longjaw galaxias species (Teleostei: Galaxiidae) from the Kauru River, North Otago, New Zealand
Bibliographic record
Abstract
Abstract A population of “longjaw galaxias”, long known to be present in the Kauru River, a small tributary of the Kakanui River in North Otago, is shown to be a distinct species using both morphological and molecular characters. It is described here as Galaxias cobitinis n. sp., which has: origin of anal fin anterior to that of dorsal fin, only 15 principal caudal fin rays, only 5 pelvic fin rays, and only 51–53 vertebrae. In these and other morphological characters it differs from G. prognathus Stokell. One specimen from the Hakataramea River, lower Waitaki River system appears to also be G. cobitinis . Molecular evidence suggests long isolation from the Kauru River of “true” longjaw galaxias G. prognathus and from rivers draining the high Southern Alps (type locality: Wilberforce River, tributary of the Rakaia River), perhaps dating back as long as 11–4 million years ago (late Miocene‐early Pliocene). This prolonged isolation contrasts with hypothesised more recent isolation of populations of the Galaxias vulgaris species group in the Kakanui River from other populations of that species group. Thus, sympatric species of Galaxias have contrasting biogeographic histories in the Kakanui River.
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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 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".