Studies on the ecology of European Peristenus spp. (Hymenoptera: Braconidae) and their potential for the biological control of Lygus spp. (Hemiptera: Miridae) in Canada
Bibliographic record
Abstract
In Canada, native plant bugs of the genus Lygus (Heteroptera: Miridae) are serious pests of a wide variety of agricultural crops. Lygus spp. outbreaks in western Canada have renewed interest in introducing European Lygus parasitoids. The intention of this thesis was to provide information on the host specificity of Lygus parasitoids belonging to the genus Peristenus (Hymenoptera: Braconidae), in an effort to assess potential risks for introducing these European parasitoids as biological control agents of native Lygus species in Canada. Investigations were made on the distribution, seasonal abundance and synchronization of Lygus spp. and their associated nymphal parasitoids, P. stygicus and P. digoneutis. In addition, the physiological host range of the parasitoids was defined. The results were compared with data on the ecological host range of the parasitoids, obtained from field studies in Schleswig-Holstein. In addition, lifetime fecundity and cold-hardiness of the parasitoids were studied to guide the choice of parasitoid species for possible introduction.
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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) | 0.001 | 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".