Relationship of Aphid (Homoptera: Aphididae) Landing Rates to the Field Spread of Soybean Mosaic Virus

Authors: Schultz, Gerald A.; Irwin, Michael E.; Goodman, Robert M.

Source: Journal of Economic Entomology, Volume 78, Number 1, February 1985 , pp. 143-147(5)

Publisher: Entomological Society of America

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The spread of soybean mosaic virus (SMV) by aphid vectors was studied in central Illinois in 1978 and 1979 by monitoring sequentially planted plots of soybeans, Glycine max (L.) Merr. Aphids transmitted SMV from about the third week in June until early September, with maximum spread of the virus occurring at times of greatest aphid abundance. The highest disease incidence (94%)was reached between 3 and 17 August 1978 during heavy flights of Rhopalosiphum maidis (Fitch), a vector of the virus. Field observations and aphid incidence monitored with a Johnson-Taylor suction trap showed that R. maidis settled on soybean plants and remained there overnight. Twelve of the 30 aphid species collected by horizontal ermine lime traps were known vectors of SMV. Two other species collected, Aphis helianthi Monell and Capitophorus hippophaes (Walker), are reported here for the first time as vectors of the virus. Vector species composed 78.0 and 67.2% of all specimens collected in 1978 and 1979, respectively. Myzocallis punctatus (Monell), which composed 9.0% of the aphid specimens collected both years, and Lipaphis erysimi (Kaltenbach), which represented 13.8% of all aphids caught in 1979, did not transmit SMV in laboratory tests. The vector status of 16 other collected taxa is unknown. Aphids in this group represented 6.1 and 14.7% of the specimens collected in 1978 and 1979, respectively.

Document Type: Research Article

Publication date: February 1, 1985

More about this publication?
  • 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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