Attraction of adult sweet potato weevils,Cylas formicarius elegantulus (Summers), (Coleoptera: Curculionidae), to sweet potato leaf and root volatiles |
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| Authors: | Stephen F. Nottingham Ki -Cheol Son Ray F. Severson Richard F. Arrendale Stanley J. Kays |
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| Affiliation: | (1) Department of Horticulture, University of Georgia, 30602 Athens, Georgia;(2) ARS, USDA, Tobacco Quality and Safety Research Univt, 30613 Athens, Georgia;(3) Present address: AFRC Aphid Biology Link Group, Imperial College at Silwood Park, SL5 7PY Ascot, Berks, UK |
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| Abstract: | ![]()
A dual-choice olfactometer was developed to study the responses of sweet potato weevils,Cylas formicarius elegantulus (Summers), to volatiles from the sweet potato,Ipomoea batatas (L.) Lam. Both males and females were attracted by volatiles from sweet potato leaves and a methylene chloride leaf extract. Females, but not males, responded to volatiles from storage roots and a methylene chloride root extract. Leaves and storage roots from four sweet potato cultivars (Centennial, Jewel, Resisto, and Regal) were attractive to female weevils; however, the attractant response varied with cultivar. GC profiles from leaf and root extracts, and GC-MS analysis of leaf extract, for Jewel cultivar enabled the volatile peaks to be identified as sesquiterpenes. |
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| Keywords: | Sweet potato weevil Cylas formicarius elegantulus Coleoptera Curculionidae Ipomoea batatas sweet potato volatiles sesquiterpenes |
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