| Title: | Sub-lethal effects of deltamethrin on walking behaviour and response to host kairomone of the egg parasitoid Trissolcus basalis |
| Author(s): | Salerno G; Colazza S; Conti E; |
| Address: | "Department of Arboriculture and Plant Protection-Entomology, University of Perugia, Borgo XX Giugno, Perugia 06121, Italy. salerno@unipg.it" |
| ISSN/ISBN: | 1526-498X (Print) 1526-498X (Linking) |
| Abstract: | "The lethal doses of the pyrethroid deltamethrin were estimated for the egg parasitoid Trissolcus basalis (Wollaston) (Hymenoptera: Scelionidae), and the sub-lethal effects of an LD25 on female walking behaviour were evaluated. Linear speed of treated parasitoids was reduced compared with that of untreated ones for a period of up to 24 h. The sub-lethal effects of deltamethrin on parasitoid response to patches contaminated by a contact kairomone from its host, Nezara viridula L (Heteroptera: Pentatomidae), was also evaluated. Both treated and untreated parasitoids responded to host-contaminated patches by increasing residence time and decreasing linear speed. However, treated females showed a significantly lower residence time compared with untreated females. Both treated and untreated females showed a similar decrease over time in the proportion of time spent in the host-contaminated patch. Hence, we hypothesise that the sub-lethal effect of deltamethrin on host foraging may decrease T basalis efficacy in controlling N viridula" |
| Keywords: | "Animals Dose-Response Relationship, Drug Female Heteroptera/*parasitology/*physiology Hymenoptera/*drug effects/physiology Locomotion/drug effects Logistic Models Motor Activity/*drug effects Nitriles Pheromones/*physiology Pyrethrins/*toxicity Time Facto;" |
| Notes: | "MedlineSalerno, Gianandrea Colazza, Stefano Conti, Eric eng Research Support, Non-U.S. Gov't England 2002/07/31 Pest Manag Sci. 2002 Jul; 58(7):663-8. doi: 10.1002/ps.492" |
