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Preferential Feeding by the Chinese Rose Beetle (Coleoptera: Scarabaeidae) on Ethephon-Treated Plants

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Abstract:

Preferential feeding by the Chinese rose beetle, Adoretus sinicus Burmeister, on ethephon-[(2-chloroethyl) phosphonic acid] treated host leaves was found under field and caged conditions. In field trials, the leaves of edible ginger, Zingiber officinale Roscoe,showed progressively greater feeding damage with increasing concentrations (0, 500, 1,000 ppm) of ethephon. Similar feeding responses by the beetles were found on the leaves of ginger and snap bean, Phaseolus vulgaris L., treated with 1,000 ppm ethephon under caged conditions. Olfactometer experiments confirmed preferential movement of the beetles toward ethephon-treated ginger plants and indicated that the movement was not because of the ethephon treatment itself or ethylene gas, which is present in ethephon and which continues to be produced in the plant following treatment. It appears that the high levels of ethylene gas found in ethephon-treated plants are involved in the formation of a plant volatile(s) that serves as an attractant and feeding stimulus for the Chinese rose beetle.

Document Type: Research Article

Publication date: October 1, 1988

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  • 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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