Biological Control of the American Cockroach (Orthoptera: Blattidae) with Inundative Releases of Tetrastichus hagenowii (Hymenoptera: Eulophidae)
Authors: HAGENBUCH, BRIAN E.; PATTERSON, RICHARD S.; KOEHLER, PHILIP G.
Source: Journal of Economic Entomology, Volume 82, Number 1, February 1989 , pp. 90-94(5)
Publisher: Entomological Society of America
Abstract:Tetrastichus hagenowii (Ratzeburg), an othecal parasitoid of the American cockroach, Periplaneta americana (L.), was released in experimental chambers to determine its potential as a biological control agent. Approximately 600 parasitoids were released each week for 7 wk. Percentage of parasitism of viable othecae averaged 95.57% after the 7 wk of release. At weeks 8-11 when the parasitoid F1 generation was emerging, the percentage of parasitism averaged 98.39%, and at weeks 12-17, parasitism was 95.4%. A hydramethylnon toxic bait applied during weeks 12-17 did not adversely affect the percentage of parasitism, but it did significantly reduce cockroach populations by 83%. The percentage of parasitism was significantly lower for othecae collected on the ceiling than at the other four locations in the chambers. The sex ratio of parasitoids was 1:0.71 (male/female), indicating super-parasitism.
Document Type: Research Article
Publication date: 1989-02-01
- 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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