A cytological study of the Pacific black fly<i>Simulium cataractarum</i>(Diptera: Simuliidae)
Bibliographic record
Abstract
Polytene chromosomes from the salivary glands of Simulium cataractarum larvae from the islands of Moorea and Tahiti were examined. Intraspecific comparisons revealed a polymorphism in the short arm of chromosome I, termed the IS-1cainversion. This inversion sequence was significantly heterozygous in the Tahitian populations (s/i), while the Moorean populations were all homozygous for the standard sequence (s/s). These two island populations seem to be reproductively isolated from one another. Thus, two cytotypes are recognized. Based on biogeographical relationships between the islands, we argue that the Moorean cytotype is likely to be ancestral to the Tahitian cytotype. Furthermore, a heterozygote advantage may exist in the Tahitian cytotype. Chromosomal maps for S. cataractarum are presented.
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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 | 0.000 |
| 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".