Insecticide Interference with Microplitis demolitor (Hymenoptera: Braconidae) Parasitization of Heliothis zea (Lepidoptera: Noctuidae)

Authors: Culin, J. D.; Dubose, W. P.

Source: Journal of Economic Entomology, Volume 80, Number 6, December 1987 , pp. 1188-1191(4)

Publisher: Entomological Society of America

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Abstract:

Heliothis zea (Boddie) larvae were fed untreated cotton foliage or foliage treated with chlordimeform, methyl parathion, or fenvalerate. Foliage was allowed to age until at least 80% of the larvae placed on foliage for 24 h survived. At that time half were exposed to mated Microplitis demolitor Wilkinson females. Larvae were monitored until H. zea death or pupation or parasitoid pupation occurred. None of the insecticides had significant effects on the survival of unparasitized versus parasitized hosts, or on M. demolitor developmental time. Unparasitized host larvae fed foliage from any of the insecticide treatments had significantly lower survival rates than those fed untreated foliage. All insecticide treatments significantly reduced the percentage of parasitized hosts surviving to parasitoid pupation. Methyl parathion had the most deleterious effect on M. demolitor development. Implications for integrated management programs are discussed.

Document Type: Research Article

Publication date: December 1, 1987

More about this publication?
  • 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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