Entomophaga (1994) 39, 199-209
Z. Mendel, D. Blumberg and I. Ishaaya (1994)
Effect of some insect growth regulators on natural enemies of scale insects (Hom.: Coccoidea)
Entomophaga 39 (2), 199-209
Abstract: We report and discuss effects of four insect growth regulators: buprofezin, fenoxycarb, pyriproxyfen and chlorfluazuron, at concentrations, recommended for agricultural use on six species of natural enemies of homopteran pests. Dipping in buprofezin had no appreciable effect on adult mortality, oviposition and development of Comperiella bifasciata (Hymen: Encyrtidae). When exposed to hosts treated with buprofezin, percentage mortality of adult Encyrtus infelix (Encyrtidae) was low; buprofezin had some detrimental effect on immature stages of E. infelix when applied prior to parasitization, but not when introduced after parasitization. Buprofezin had a slight effect on the immature stages of Cryptochetum iceryae (Dipt: Cryptochetidae) while fenoxycarb and pyriproxyfen had marked detrimental effects on parasitization and on development of the parasitoid fly. None of the larvae of Rodolia cardinalis (Col. : Coccinellidae) developed into adults after application of buprofezin, fenoxycarb or pyriproxyfen. Buprofezin and chlorfluazuron completely prevented egg hatch of Chilocorus bipustulatus (Col. Coccinellidae) . Buprofezin did not adversely affect egg hatch and larval development of Elatophilus hebraicus (Hemiptera: Anthocoridae); fenoxycarb or pyriproxyfen applied either before of after oviposition on pine needles caused total suppression of egg hatch.
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Link to article at publishers website
Database assignments for author(s): Zvi Mendel, Isaac Ishaaya, Daniel Blumberg
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
health/environmental effects of pesticides
Research topic(s) for beneficials or antagonists:
resistance to pesticides
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Prostephanus truncatus | Stored grain | |||
| Comperiella bifasciata (parasitoid) | ||||
| Encyrtus infelix (parasitoid) | ||||
| Rodolia cardinalis (predator) | ||||
| Chilocorus bipustulatus (predator) | ||||
| Elatophilus hebraicus (predator) | ||||
| Cryptochetum iceryae (parasitoid) |
