Food web associations and effect of trophic resources and environmental factors on parasitoids expanding their host range into non‐native hosts
Bibliographic record
Abstract
Abstract Trophic interactions and environmental conditions determine the structure of food webs and the host expansion of parasitoids into novel insect hosts. In this study, we investigate plant–insect–parasitoid food web interactions, specifically the effect of trophic resources and environmental factors on the presence of the parasitoids expanding their host range after the invasion of C hrysodeixis chalcites ( E sper) ( L epidoptera: N octuidae). We also consider potential candidates for biological control of this non‐native pest. A survey of larval stages of P lusiinae ( L epidoptera: N octuidae) and their larval parasitoids was conducted in field and vegetable greenhouse crops in 2009 and 2010 in various locations of Essex and Chatham‐Kent counties in O ntario, C anada. Twenty‐one plant–host insect–host parasitoid associations were observed among T richoplusia ni ( H übner) ( L epidoptera: N octuidae), C . chalcites , and larval parasitoids in three trophic levels of interaction. C hrysodeixis chalcites , an old‐world species that had just arrived in the region, was the most common in our samples. The larval parasitoids C ampoletis sonorensis ( C ameron) ( H ymenoptera: I chneumonidae), C otesia vanessae ( R einhard), C otesia sp., M icroplitis alaskensis ( A shmead), and M eteorus rubens ( N ees) (all H ymenoptera: B raconidae) expanded their host range into C . chalcites changing the structure of the food web. C opidosoma floridanum ( A shmead) ( H ymenoptera: E ncyrtidae) was the most common parasitoid of T . ni that was not found in the invasive species. Plant species, host abundance, and agro‐ecosystem were the most common predictors for the presence of the parasitoids expanding their host range into C . chalcites . Our results indicate that C . sonorensis , C . vanessae , and C . floridanum should be evaluated for their potential use in biological control of C . chalcites and T . ni .
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
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 | 0.000 | 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 teacher head, 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".