Journal of Entomology (2009) 6, 161-166

Hooshang Rafiee Dastjerdi, Mir Jalil Hejazi, Ghadir Nouri Ganbalani and Moosa Saber (2009)
Effects of some insecticides on functional response of ectoparasitoid, Habrobracon hebetor (Say) (Hym.: Braconidae)
Journal of Entomology 6 (3), 161-166
Abstract: In this research, the effects of profenofos, thiodicarb, hexaflumuron and spinosad were studied on functional response of Habrobracon hebetor to different densities of last instar larvae of Anagasta kuehniella. Two day-old mated females were exposed to LC₂₅ of the insecticides and distilled water as control. Host densities of 2, 4, 8, 16, 32 and 64 were offered to treated females wasps for 24 h in 10 cm petri dishes. Experiments were conducted in 8 replications and were carried out in controlled conditions, 26± 2°C, 70± 5% RH and 16:8 (L:D) h. The type of functional response was determined using logistic regression and the parameters, searching efficiency (a) and handling time (T_h) were estimated by non-linear regression using SAS software. Functional response was type II in control and all of insecticide treatments. Searching efficiency in control and insecticide treatments were 0.0935, 0.0132, 0.0511, 0.0864 and 0.0905 h^-1 and handling times were 0.4542, 1.0646, 0.5381, 0.5275 and 0.4896 h, respectively. The maximum attach rates (24/T_h) were estimated 22, 52, 44, 45 and 49, respectively. Spinosad and hexaflumuron had the most and the lowest effect on searching efficiency of H. hebetor, respectively.
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Database assignments for author(s): Moosa Saber, Mir Jalil Hejazi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Habrobracon hebetor (parasitoid)