Potential use of the digenean parasite, Plagiorchis elegans, as a biological control agent of Biomphalaria glabrata (Pulmonata:Planorbidae) and Schistosoma mansoni (Digenea:Schistosomatidae)
Bibliographic record
Abstract
The impact of a primary infection with the incompatible digenean Plagiorchis elegans to groups composed of young, juvenile and adult Biomphalaria glabrata and a challenge infection with the compatible parasite Schistosoma mansoni was examined. Egg production of young B. glabrata was significantly reduced by P. elegans at the higher exposures of 16 eggs per snail, while egg production of adult B. glabrata was reduced at exposures of 8 and 16 eggs per snail. Egg production of juvenile B. glabrata snails was not significantly affected by any of the levels of P. elegans exposures. The survivorship of juvenile B. glabrata snails was significantly lowered by an exposure to 16 P. elegans eggs per snail. The survivorship of adult snails was significantly reduced by exposures to both 8 and 16 P. elegans eggs per snail. Interestingly enough, the survivorship of young B. glabrata snails was not significantly affected by P. elegans exposure. Snails harboring small P. elegans infections acquired a resistance to Schistosoma mansoni infection. Infection with P. elegans did not have any significant effect on the egg production of the young and adult sympatric snails, Helisoma trivolvis trivolvis. The survivorship of adult H. trivolvis trivolvis was not significantly affected by exposure to P. elegans. This being said, young H. t. trivolvis that were exposed to P. elegans had a higher survivorship than did control snails. Exposed Bulinus truncatus snails laid up to 50% fewer eggs for the first five weeks due to P. elegans infection. There was however no effect on the survivorship of the snails.
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 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".