Interrelationships Among Aphids,1 Tarnished Plant Bugs,2 and Alfalfas3
Authors: LINDQUIST, RICHARD K.; SORENSEN, EDGAR L.
Source: Journal of Economic Entomology, Volume 63, Number 1, February 1970 , pp. 192-195(4)
Publisher: Entomological Society of America
Abstract:Both aphid-resistant and aphid-susceptible alfalfa varieties, Medicago sativa L., were more attractive to the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), in cages containing spotted alfalfa aphids, Therioaphis maculata (Buckton), than in cages lacking aphids. However, plant bug increase on the aphid-resistant variety 'Kanza' was only 17.6%, compared with 123.2% for the aphid-susceptible variety 'Alfa.' In the absence of aphids, attractiveness of the 2 varieties was similar. Rate of tarnished plant bug mortality was markedly lower in cages containing aphids than it was in control cages.
Tarnished plant bugs were observed feeding on pea aphids (Acyrthosiphon pisum (Harris), and spotted alfalfa aphids. When caged on an aphid-susceptible alfalfaclone, adult plant bugs apparently destroyed an average of 2.4 spotted alfalfa aphid and 2.1 pea aphid nymphs per day.
Alfalfa sprayed with a 10% sucrose solution attracted significantly more (72%) bugs than did unsprayed alfalfa. Bug increases from spraying were 33 and .143% for 'KSl0' and Alfa, respectively.
Document Type: Research Article
Publication date: February 1970
- 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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