Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (2001) 74, 72-84
C. Grimm, H. Schmidli, F. Bakker, K. Brown, P. Campbell, M. Candolfi, M. Chapman, E.G. Harrison, M. Mead-Briggs, R. Schmuck and A. Ufer (2001)
Use of standard toxicity tests with Typhlodromus pyri and Aphidius rhopalosiphi to establish a dose-response relationship
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 74 (3), 72-84
Abstract: The existing standardised test systems for assessing the toxicity of crop protection products to the non-target arthropods Typhlodromus pyri (Acari: Phytoseiidae) and Aphidius rhopalosiphi (Hymenoptera: Aphidiidae) are limit tests designed to compare a single-use rate of the product with a water control. The suitability of these test systems for generating dose-response data as required for refined ecotoxicological risk assessment was evaluated. Data on dose-response toxicity of crop protection products to T. pyri and A. rhopalosiphi were generated under worst-case laboratory and to T. pyri under extended laboratory conditions and analysed using the standard Probit method, a logistic regression, a generalised Probit analysis, and the moving average-angle method in order to calculate the LR50-values (application rate killing 50 % of the exposed organisms). The fit of the models, the precision of the resulting LR50 values, and the required minimum number of replicates were compared. In 85 % of the studies, at least one of the statistical methods led to satisfactory results. The moving average-angle method was the most widely applicable method. The results show that the existing guidelines can be used to perform dose-response tests. Implications for risk assessment are discussed.
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Link to article at publishers website
Database assignments for author(s): Christoph Grimm, Richard Schmuck
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Aphidius rhopalosiphi (parasitoid) | ||||
| Typhlodromus pyri (predator) |
