Changes in Egg Mass Density, Size, and Amount of Parasitism After Chemical Treatment of a Heavy Population of the Gypsy Moth1
Author: DOANE, CHARLES C.
Source: Journal of Economic Entomology, Volume 61, Number 5, October 1968 , pp. 1288-1291(4)
Publisher: Entomological Society of America
Abstract:Applications of a short residual phosphate, Gardona® (2-chloro-1- (2,4,5-trichlorophenyl) vinyl dim ethyl phosphate) applied in 50-acre plots against dense populations of the gypsy moth, Porthetria dispar (L.) , protected foliage but prolonged the outbreak by allowing numerous larvae to survive. In untreated woods, starvation and polyhedrosis reduced the number of larvae to a lower level. A study of the eggs of the succeeding generation showed that there were more egg masses in the treated plots and that they were of larger size than those outside the plots. There was also less parasitism by the egg parasite Ooencyrtus kuwanae (Howard) inside than outside the plots. The level of parasitism throughout the test area was high compared with that in previous reports.
Document Type: Research Article
Publication date: October 1968
- 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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