Ecology of fear: Ontogeny-mediated non-consumptive effects in a parasite-host system
Bibliographic record
Abstract
Non-consumptive effects (NCEs) arise in the presence of parasites even when the infection does not occur and can include changes to host behaviour, physiology, or morphology. Using the Drosophila nigrospiracula – Macrocheles subbadius fly-mite system, we investigated the impact of parasite exposure (sans infection) during the pupal and adult pre-reproductive stages. First, we exposed fly pupae to mites—either indirectly (caged mites) or directly (free-roaming mites) to test the effects of parasite exposure on pupation success. Second, we tested how exposing adult female flies to mites prior to reproduction affects fecundity during the post-exposure reproductive period. We found that direct exposure to mites significantly decreased the rate of successful eclosion (development from pupa to adult) compared to unexposed pupae; however, the duration of pupation was not significantly affected. The indirect exposure did not have a significant effect on either successful eclosion or duration of pupation. We also found that indirectly exposed (caged mites) females had a significant decrease in the number of offspring produced, but only for the first few days post-eclosion, suggesting the effect was reversible after mite removal. NCEs arise after mite exposure during the pupal and pre-reproductive life stage of Drosophila, in the form of decreased eclosion success and fecundity. Investigating the NCEs associated with parasite exposure at various life stages of the host is important in understanding the ecology of fear and its total impact on hosts throughout their entire lifespan, with consequences for host ontogeny and population growth.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.176 |
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".