Genetic structure and phylogeography of the takin (<i>Budorcas taxicolor</i>) as inferred from mitochondrial DNA sequences
Bibliographic record
Abstract
To investigate the genetic structure within the takin (Budorcas taxicolor), a little-studied and threatened species, portions of the mitochondrial DNA control region and cytochrome b gene were sequenced from 40 takins from three subspecies and 10 separate geographical locations in China. Overall variation among individuals was low. Both neighbor-joining and parsimony analyses did separate animals into three distinct clades reflecting the subspecific definitions, with only one locality grouping with a clade distinct from its purported subspecies. Animals within each clade were genetically similar to each other, which we hypothesize is due to the mobility of the animals leading to significant gene flow within each region until recent habitat alteration limited movements. We also suggest that genetic bottlenecks survived by the species since the end of the Pleistocene may have contributed to overall low levels of variability within the species.
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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 | 0.001 | 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) | 0.001 | 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".