Applied Entomology and Zoology (2007) 42, 557-562

Hayat Makee, Mohammed Tlas, Samer Amer and Jamal Abdulla (2007)
Effect of inherited sterility and Bacillus thuringiensis on mortality and reproduction of Phthorimaea operculella Zeller (Lepidoptera: Gelechiidae)
Applied Entomology and Zoology 42 (4), 557-562
Abstract: The effect of a commercial formulation of Bacillus thuringiensis (Dipel^® 2X) upon F₁ progeny of irradiated and nonirradiated Phthorimaea operculella male parents was investigated. F₁ progeny of irradiated parents was more susceptible to B. thuringiensis than that of nonirradiated parents. A combination of irradiation and B. thuringiensis led to higher mortality in F₁ progeny of P. operculella. The LC₅₀ was 0.406 g/100 ml for F₁ progeny of nonirradiated parents, but 0.199 g/100 ml for those of irradiated parents. There was a great reduction in the pupal weight, fecundity and egg hatchability of F₁ progeny of irradiated parents compared to nonirradiated parents. Such reduction was increased by applying a higher concentration of B. thuringiensis. A combination of the inherited sterility technique and B. thuringiensis application gave a good control result against P. operculella.
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Database assignments for author(s): Hayat Makee

Research topic(s) for pests/diseases/weeds:
control - general
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phthorimaea operculella
Bacillus thuringiensis var. kurstaki (entomopathogen)	Phthorimaea operculella