Exploration into a mechanism of transgenerational transmission of nucleopolyhedrovirus in Lymantria dispar L. in Western Siberia

The mechanisms of nucleopolyhedrovirus (NPV)transmission through gypsy moth (Lymantriadispar L., Lepidoptera: Lymantriidae)populations in Western Siberia wereinvestigated. Field and laboratory studies werecarried out during 1992–1998 in a gypsy mothoutbreak in the Novosibirsk Area (WesternSiberia),...

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Bibliographic Details
Published in:BioControl (Dordrecht, Netherlands) Netherlands), 2004-08, Vol.49 (4), p.441-454
Main Authors: Ilyinykh, Alexandr V., Shternshis, Margarita V., Kuzminov, Sergei V.
Format: Article
Language:English
Subjects:
Baculoviridae
Insects
Population decline
Trees
Viruses
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Summary:The mechanisms of nucleopolyhedrovirus (NPV)transmission through gypsy moth (Lymantriadispar L., Lepidoptera: Lymantriidae)populations in Western Siberia wereinvestigated. Field and laboratory studies werecarried out during 1992–1998 in a gypsy mothoutbreak in the Novosibirsk Area (WesternSiberia), Russia. The damaged trees were primarilytwo species of birch, Betula pendula Roth. and B. pubescensEhrh. Investigations were performed at threestages of the outbreak: population increase(1992–1993), population peak (1994–1995) andpopulation decline (1996–1998). Experiments onactivation of occult virus by different stressfactors were carried out in order to clarifythe mechanism of transgenerational transmissionof NPV. In both laboratory and fieldexperiments NPV-caused mortality levels werelow; most insects did not acquire a lethal doseof virus. Occult virus can provide an importantroute of transgenerational NPV transmission,particularly in Western Siberia where gypsymoths migrate by female flight and can moveaway from trees contaminated by virus fromprevious larval infections.
ISSN:1386-6141
1573-8248
DOI:10.1023/B:BICO.0000034592.30160.50