Testes extracts inhibit heart contractions in females of the blood‐feeding insect, <i>Rhodnius prolixus</i>
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Bibliographic record
Abstract
Abstract Myogenic contractions of the heart of the female blood‐feeding insect, Rhodnius prolixus (Stål), are inhibited by crude extracts of testes applied directly to isolated dorsal vessels. Dorsal vessels were observed with a stereo microscope and heart beats timed with a stopwatch. In normal Rhodnius saline, hearts contract at 14.8 ± 7.1 beats per minute ( n = 45). Crude extracts of the testes and the two male reproductive accessory organs (the opaque and transparent accessory glands) were prepared from previously frozen tissue by homogenizing 5–20 glands in a small glass homogenizer containing Rhodnius saline, centrifuging for 5 min at 2 000 g , and collecting the supernatant. Testes extract as low as 1.0 glands per mL inhibit contractions whereas crude extracts of the opaque or transparent accessory glands have no consistent effect. We refer to this cardiac inhibitor as rhodtestolin ( Rhodnius testis inhibitory factor), and discuss its possible effects on the female during copulation.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it