Natural Variability of Three Geographic Isolates of Gypsy Moth (Lepidoptera: Lymantriidae) Nuclear Polyhedrosis Virus
Authors: SHAPIRO, MARTIN; ROBERTSON, JACQUELINE L.
Source: Journal of Economic Entomology, Volume 84, Number 1, February 1991 , pp. 71-75(5)
Publisher: Entomological Society of America
Abstract:Variations in biological activities of three geographic isolates of gypsy moth, Lymantria dispar (L.), nuclear polyhedrosis virus (NPV) were determined in the laboratory. The median LC•• varied from 0.17 ± 0.19 polyhedral inclusion bodies (PIB) per mm' (Abington, Massachusetts isolate) to 17.4 ± 13.5 PIB per mm' (Dalmatia, Yugoslavia), a difference of about 102-fold. Activity of samples within the two North American isolates (Abington, Mass., and Hamden, Conn.) was approximately 15- and 20-fold, respectively; variation of individual samples within the Dalmatia isolate was approximately 17.5-fold at LC••. At LC••, variation was slightly greater within each North American isolate (23- and 35-fold for Abington and Hamden, respectively), but smaller for the Dalmatia isolate (14.5- fold). Samples of each NPV isolate exhibited a skewed distribution of activities at both LC•• and LC••. Plots of LC•• versus LC•• identified the samples within each isolate that merit selective propagation.
Document Type: Research Article
Publication date: February 1991
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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