Biocontrol Science and Technology (2001) 11, 597-610
P. Medina, F. Budia, L. Tirry, G. Smagghe and E. Viñuela (2001)
Compatibility of spinosad, tebufenozide and azadirachtin with eggs and pupae of the predator Chrysoperla carnea (Stephens) under laboratory conditions
Biocontrol Science and Technology 11 (5), 597-610
Abstract: Under laboratory conditions, the toxicity of three novel insecticides, spinosad (Tracer®), tebufenozide (Mimic®) and azadirachtin (Align®), was tested against eggs and pupae of the predator Chrysoperla carnea (Stephens). In a first series of assays, eggs were dipped in an aqueous concentration and no ovicidal activity was scored for the three insecticides. In the second, when females were ovipositing on treated substrate for 24 h, fecundity and hatching percentages were similar as compared to controls and the offspring developed normally until the adult stage. However, spinosad, at the highest concentrations tested, caused a slight, significant reduction in the adult life span and fecundity. In a third series of experiments, pupae developed into normal adults after topical treatment for the three insecticides. Herewith, a pharmacokinetic study indicated low accumulation in the body after pupal cuticle penetration when administrating 14C-labelled insecticide. Fourthly, pupation of last-instar larvae in treated substrate was normal for spinosad and tebufenozide. Only azadirachtin caused a slight reduction in the number of pupae and adults; however, fecundity and fertility of surviving adults was normal. In conclusion, the current results indicate that the three insecticides are not toxic to eggs and pupae of C. carnea.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Elisa Viñuela, Pilar Medina, Guy Smagghe, Luc Tirry
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.
|
---|---|---|---|---|
Chrysoperla carnea (predator) |