When your dinner bites back: Alsike clover as a host for Coleophora deauratella
Bibliographic record
Abstract
Understanding host relationships between invasive species and their non-native hosts has important economic and ecological considerations. The red clover casebearer moth (RCCB), Coleophora deauratella Lieneg and Zeller (Lepidoptera: Coleophoridae), is an invasive red clover seed pest introduced to Canada in the 1960’s. RCCB larvae feed on developing seed from June to late August then overwinter in crop debris. RCCB can cause seed yield losses of ≥80% in second-year seed stands of red clover. There are no registered pesticides for RCCB. Both larvae and adults have been reported in alsike clover fields but little damage is seen on these plants, and female moths display lower fecundity on alsike clover. The purpose of this research was to compare the larval abundance and development of RCCB on red clover (Trifolium pratense) and alsike clover (Trifolium hybridium). I also wanted to compare moth species diversity and larval abundance in red and alsike clover seed crop fields and volunteer clover patches. In addition, host quality was assessed by rearing field-collected larvae on laboratory-grown clover flower heads and observing growth and development. No larvae were recovered from alsike clover fields or volunteer alsike patches, while 338 larvae were recovered from red clover fields and volunteer patches. Larvae reared on alsike clover had a 30% mortality rate during the rearing period, while larvae reared on red clover had a 5% mortality rate. More weight was gained by larvae reared on red clover (mean weight gain= 0.00438 grams, n=19) compared to larvae reared on alsike clover (mean weight gain= 0.00274 grams, n=109, t = -2.9093, p= 0.01407). This suggests that the difference in damage and fecundity may be due to lower host quality.
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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 | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".