Phylogeography of Smallmouth Bass (Micropterus Dolomieu) and Comparative Myology of the Black Bass (Micropterus, Centrarchidae)
Bibliographic record
Abstract
Biogeographic patterns were investigated within a single species and among its congenerics. Smallmouth bass (Micropterus dolomieu) were characterized by portions of the cytochrome b gene and the control region although bass in Lake Erie were also evaluated using eight nDNA microsatellites. Overall, little population structure was observed among sites in Lake Erie which was surprising given that most male smallmouth bass exhibit nest site fidelity. But, these lake bass were divergent from bass residing in nearby tributaries indicating that lacustrine bass are reproductively isolated from riverine bass even though both groups may spawn in the same rivers. Adjacent riverine populations have also diverged from each other. Smallmouth bass from 71 sampling sites spanning their native distribution were analyzed to examine post-glaciation colonizing routes from glacial refugia into the Great Lakes. Phylogenetic analyses indicated that ancestral haplotypes exist in today's Interior and Eastern Highlands, and the tree structure supported sequential colonization events northward with a loss of diversity in more distant populations. Western rivers and the upper Great Lakes were characterized by one phylogroup thatwas distinct from bass occupying the Ouachita Highlands. Bass from Lake Ontario, Georgian Bay, and the St. Lawrence River were characterized largely by just a single, derived haplotype of unknown geographical origin. The two central lakes, Huron and Erie, were composed of multiple phylogroups indicating numerous source populations and access routes. The unique biogeography of smallmouth bass and its congenerics (Micropterus, Centrarchidae) was addressed using comparative morphology to complement the molecularly based phylogeographic component. The genus' greatest diversity is centered in the southeastern USA although several outliers are restricted to watersheds in Texas or the Interior Highlands. Myological variation was quantified for all black bass, but characters suitable for phylogenetic analysis were minimal.
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".