Journal of Entomological Science (2013) 48, 332-344

J.D. Podgwaite, V.V. Martemyanov, J.M. Slavicek, S.A. Bakhvalov, S.V. Pavlushin, N. Hayes-Plazolles and R.T. Zerillo (2013)
Potency of nucleopolyhedrovirus genotypes for European and Asian gypsy moth (Lepidoptera: Lymantriidae)
Journal of Entomological Science 48 (4), 332-344
Abstract: Gypchek is a gypsy nucleopolyhedrovirus (LdMNPV) product used for management of European gypsy moth (Lymantria dispar dispar L.) in the United States, primarily in areas where the use of broad-spectrum pesticides is not appropriate. Similar LdMNPV products are used in Russia for control of a flighted-female strain of Asian gypsy moth (Lymantria dispar asiatica Vnukovskij), an insect not yet established in the United States. Gypchek is a mixture of LdMNPV genotypic variants and is being developed further toward a single, high- potency genotype product that is effective against both European and Asian strains. We isolated 5 LdMNPV genotypic variants from Gypchek and, through diet incorporation bioassays, assessed their potencies for both a laboratory strain of European gypsy moth and a wild Asian gypsy moth strain. Bioassays conducted in the United States showed that 2 viral isolates, 122b and 122-HP, were about 3 times as potent as Gypchek against European gypsy moth. Bioassays conducted in Russia showed that 122-HP was as effective as a wild Siberian LdMNPV against a wild Asian (Siberian) strain of gypsy moth. Both 122-HP and 122b were shown to be at least as effective as Gypchek in killing European gypsy moth larvae when formulated at a high dose and sprayed on oak foliage in a ground-based field test. Overall results indicated that both 122b and 122-HP are potential candidates for further development as a single-genotype Gypchek product.
(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): Vyacheslav V. Martemyanov

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lymantria dispar
Alphabaculovirus lydisparis (entomopathogen)	Lymantria dispar