Environmental Entomology (1998) 27, 812-816

Vicente Marco, Gema Perez-Farinos and Pedro Castañera (1998)
Effects of hexaflumuron on transovarial, ovicidal, and progeny development of Aubeonymus mariaefranciscae (Coleoptera : Curculionidae)
Environmental Entomology 27 (4), 812-816
Abstract: Topical and foliar exposure of hexaflumuron on field-colIected adults of Aubeonymus mariaefranciscae Roudier, applied at 0.03 µg (Al) per adult and 31 µg (Al) per sugar beet leaf, respectively, resulted in significant inhibition of egg hatch. Both sexes topically treated ~50d before the start of oviposition had inhibited egg hatch for ~73% of the total ovipositon period, but was 43% for adults exposed to hexaflumuron-treated sugar beet leaves. Inhibition was lower for topical (56%) and foliar (22%) applications when weevils were treated soon after onset of oviposition. Period of egg hatch inhibition by topical application was 1.5 times greater when both sexes were exposed and mated together compared with exposed females mated with untreated males. No egg hatch inhibition was observed when treated males mated with untreated females. Mortality of treated eggs (0-24 h old) on hexaflumuron-treated filter paper was significantly greater compared with mortality of eggs 1-6 d old. This suggested that age group was a critical stage for penetration of hexaflumuron or chitin synthesis. Topical application of hexaflumuron to ovipositing weevils suppressed survival of F₁ larvae (6% survival at 1st instar and all died at 3rd instar) and only a 4% survival (at pupal stage) was obtained with foliar application.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Vicente Marco, Pedro Castañera

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aubeonymus mariaefranciscae	Beet/sugarbeet (Beta vulgaris)