Amplified fragment length polymorphism and mitochondrial sequence data detect genetic differentiation and relationships in endangered southwestern U.S.A. ambersnails (<i>Oxyloma</i> spp.)
Bibliographic record
Abstract
Le gastropode Oxyloma haydeni kanabensis est sur la liste federale des especes menacees de mollusques et il habite en deux endroits dans le sud-ouest des Etats-Unis. Pour determiner l'ampleur de la variation genetique au sein des populations et entre les populations de ce taxon, nous avons procede a la technique du polymorphisme de la longueur des fragments amplifies (AFLP) pour generer 110 marqueurs genetiques parmi les individus echantillonnes dans les populations d'O. h. kanabensis et des deux seules populations connues d'Oxyloma haydeni haydeni du Utah et du nord de l'Arizona. Des informations additionnelles ont ete obtenues a partir de donnees sur les sequences des fragments des genes cytochrome b et cytochrome oxydase I. Les resultats indiquent des differences importantes entre les populations, comme l'ont revele les techniques de regroupement UPGMA, les valeurs de F et le test de Fisher. Divers niveaux de diversite genetique ont ete observes au sein de chaque population. L'heterozygotie theorique se situait entre 0,239 et 0,086 d'apres un modele base sur les proportions genotypiques Hardy-Weinberg, et se situait entre 0,205 et 0,061 d'apres un modele a autofecondation obligee completement homozygote. Les resultats des analyses de groupements indiquent qu'une population d'O. h. kanabensis et une population d'O. h. haydeni sont tres semblables que les deux populations etudier d'O. h. kanabensis (d'apres plus de 80 % de bootstraps repetes). Ces resultats sont de plus confirmes par une analyse phylogenetique des deux fragments de genes mitochondriaux. Nos donnees semblent indiquer que les appellations taxonomiques necessitent d'etre revisees, un processus qui affectera sans doute le statut protege de certaines des populations.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 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".