Seasonal Changes in the Seminal Plasma Proteome of the Crab-Eating Fox ( <i>Cerdocyon thous</i> )
Bibliographic record
Abstract
). Semen was collected in Brazil from March 2021 to March 2022 from five healthy adult males housed individually. Collections were performed without chemical or physical restraint by digital manipulation of the penis, and seminal plasma proteomics were assessed by mass spectrometry (ESI Q-Tof MS/MS) on 43 ejaculates from the reproductive season and four from the nonreproductive season. A total of 408 proteins were identified: 219 exclusives to the reproductive season (June-September), 90 to the nonreproductive season (October-May), and 99 shared between both. Protein abundance differed significantly between seasons. Proteins related to enzymatic and oxidoreductase functions predominated in the nonreproductive season, whereas those linked to sperm metabolism and reproductive processes were more abundant in the reproductive season. Among these, olfactory receptor, strawberry notch homologue, and zinc finger protein were considered potential reproductive season biomarkers, with AUC > 0.80 in the receiver operating characteristic analysis. This is the first study describing the seminal plasma proteome and its seasonal variation in the crab-eating fox, identifying biomarkers with potential applications in conservation and reproductive management of this and other endangered canids.
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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 | 0.000 | 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) | 0.000 | 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 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".