Use of Sugar Beet Foliage by the Introduced Leafmining Fly Amauromyza flavifrons (Diptera: Agromyzidae)

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Laboratory and field experiments investigated the use of a nontraditional host, Beta vulgaris L. (sugar beet), by the leafminer Amauromyza flavifrons Meigen. In laboratory trials using leafminers from the northeastern United States where sugar beets are not grown commercially, female flies readily oviposited on B. vulgaris even when a commonly used host, Saponaria officinalis L., was present. However, larval mortality was significantly higher on B. vulgaris than on S. officinalis and occurred at an earlier instar. Larval mortality on S. officinalis was significantly correlated with the number of miners in each leaf, suggesting an effect of larval competition, whereas on B. vulgaris, larval mortality was independent of the number of miners in a leaf. Results from an experimental garden array in the northeastern United States showed that wild, unconfined A. flavifrons females will oviposit on B. vulgaris and confirmed substantial early larval mortality on this plant. Implications of female oviposition and larval mortality on B. vulgaris are discussed in terms of the probable spread of this fly to western sugar beet growing regions.

Keywords: Amauromyza flavifrons; Beta vulgaris; host range; novel host

Document Type: Research Article

Publication date: April 1, 1999

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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