Comparison of Host Suitability of Western Wheat Aphid with the Russian Wheat Aphid
Authors: KINDLER, S. D.; HAMMON, R. W.
Source: Journal of Economic Entomology, Volume 89, Number 6, December 1996 , pp. 1621-1630(10)
Publisher: Entomological Society of America
Abstract:The western wheat aphid, Diuraphis tritici (Gillette), and the Russian wheat aphid, Diuraphis noxia (Mordvilko), are pests of wheat, Triticum aestivum L. Both species share similar distribution patterns in the United States. However, D. noxia is a perennial economic pest of wheat, whereas D. tritici is, at most, an occasional economic pest of wheat. The economic importance of D. noxia depends in part on its ability to use alternative plant species as over summering hosts. We studied the survival and reproduction of D. tritici on numerous cool- and warm-season grasses, legumes, and forbs, and also compared D. tritici with D. noxia on some common Bromus spp. and Agropyron spp. to see if the 2 aphid species differ in their reproduction and survivorship on the same grass species. D. tritici survived on 36 of 40 cool-season grass species, 7 of 19 warm-season grass species, and none of the 33 legumes or 13 forbs. The natality of D. tritici compared with D. noxia on several species of brome grasses and wheat grasses was generally significantly lower for D. tritici than D. noxia. D. tritici preferred wheat compared with 3 other cereals, whereas wheat and barley were equally suitable as hosts for D. noxia. Rye, Secale cereale L., was essentially a nonhost for D. tritici. After 14 d, aphid populations were significantly higher for D. noxia on all 4 cereals compared with D. tritici populations on the same hosts. In a separate experiment to compare damage of D. tritici with D. noxia on different growth stages of wheat, we found that D. tritici was significantly more deleterious than D. noxia to the yield potential and yield components of wheat, particularly when infestation occurred at the 7-leaf plant growth stage and the jointing growth stage. The economic importance of D. noxia compared with D. tritici to U.S. wheat production may be caused in part by its ability to survive and increase on cool-season grasses and cereals better than D. tritici.
Document Type: Research Article
Publication date: 1996-12-01
- 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.
- Editorial Board
- Submit a Paper
- Subscribe to this Title
- Information for Advertisers
- Visit this journal's homepage
- ingentaconnect is not responsible for the content or availability of external websites