Biological Control of Aster Leafhopper (Homoptera: Cicadellidae) and Midges (Diptera: Chironomidae) by Pardosa ramulosa (Araneae: Lycosidae) in California Rice Fields
Authors: ORAZE, MICHAEL J.; GRIGARICK, ALBERT A.
Source: Journal of Economic Entomology, Volume 82, Number 3, June 1989 , pp. 745-749(5)
Publisher: Entomological Society of America
Abstract:The impact of Pardosa ramulosa (McCook) on selected prey species in rice Was evaluated in field experiments where P. ramulosa densities were physically manipulated in small plots. P. ramulosa significantly reduced the number of adult midges collected in floating emergence traps, and when confined in metal rings placed in patches of aquatic broadleaf weeds in the paddy, reduced densities of aster leafhopper, Macrosteles fascifrons Stal, by 84 to 96% compared with the control. No further significant reduction in aster leafhopper density was achieved by adding more than 22 spiders per m2. This was probably the result of greater spider mortality associated with higher spider densities. P. ramulosa may help prevent aster leafhopper outbreaks in rice.
Document Type: Research Article
Publication date: June 1989
- 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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