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Sustained Releases of Spalangia endius to Parasitize Field Populations of Three Species of Filth Breeding Flies

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Spalangia endius Walker was released weekly for 13 wk against a mixed population of filth breeding field flies. Within 10 wk after initiation of the releases at a feeding station in a 44-acre pasture, all Musca domestica L. pupae collected were parasitized. Moreover, by the 12th wk, all Stomoxys calcitrans (L.) pupae, and after 13 wk, all Physiphora aeneae (F.) pupae collected were parasitized. When another feeding station located 450 ft away was set up during the 6th wk of the release, all M. domestica pupae collected from within and at the base of the trough were completely parasitized within 7 wk. During this same time interval, parasitism of S. calcitrans pupae collected from the base of the trough ranged from 99.0–100.0% and within the trough ranged from 33.0–88.0%.

Document Type: Research Article

Publication date: August 1, 1977

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  • 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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