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1 October 2006 Flight Tunnel Responses of Z Strain European Corn Borer Females to Corn and Hemp Plants
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Abstract

European corn borer females Ostrinia nubilalis Hübner (Lepidoptera, Pyralidae) exhibited upwind flight to three main host plants, corn Zea mays, hemp Cannabis sativa and hop Humulus lupulus, in a laboratory wind tunnel. Within a 15-min experimental period, 22.9% to 24.3% mated females flew toward and landed on a single potted corn plant. A potted hemp plant attracted 25.7% females. In a choice test, significantly more females landed on a hemp plant than on an adjacent corn plant. In contrast, paprika Capsicum annuum did not elicit attraction. Headspace collections from corn, hemp, and hop contained 18 compounds which consistently elicited a response from female antennae. Four of these, (Z)-3-hexenyl acetate, β-caryophyllene, (E)-β-farnesene, and (E,E)-α-farnesene co-occurred in three host plants studied. A 4-component blend of these compounds did not attract female moths in the wind tunnel. Availability of a wind tunnel bioassay is, however, a step toward the identification of plant volatiles guiding long-range attraction of gravid corn borer females.

Marie Bengtsson, Zsolt Karpati, Gabor Szöcs, Haim Reuveny, Zhihua Yang, and Peter Witzgall "Flight Tunnel Responses of Z Strain European Corn Borer Females to Corn and Hemp Plants," Environmental Entomology 35(5), 1238-1243, (1 October 2006). https://doi.org/10.1603/0046-225X(2006)35[1238:FTROZS]2.0.CO;2
Received: 28 March 2006; Accepted: 1 July 2006; Published: 1 October 2006
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