6533b86ffe1ef96bd12cd451
RESEARCH PRODUCT
Sub-lethal effects of deltamethrin on walking behaviour and response to host kairomone of the egg parasitoid Trissolcus basalis.
Stefano ColazzaEric ContiGianandrea Salernosubject
Time Factorssub-letal effectHymenopteraMotor ActivityPheromonesParasitoidHeteropterachemistry.chemical_compoundAnimal scienceparasitic diseasesBotanyNitrilesPyrethrinsAnimalsTrissolcus basalisScelionidaePyrethroidbiologyDose-Response Relationship DrugkairomonefungiNezara viriduladeltamethrinGeneral MedicinePentatomidaebiology.organism_classificationHymenopteraDeltamethrinLogistic ModelsNezara viridula; Trissolcus basalis; egg parasitoid; kairomone; sub-letal effect; deltamethrinchemistryNezara viridulaInsect ScienceKairomoneegg parasitoidFemaleAgronomy and Crop ScienceLocomotiondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-07-31 | Pest management science |