The female sex pheromone of sugarcane stalk borer,Chilo auricilius identification of four components and field tests |
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Authors: | Brenda F Nesbitt P S Beevor A Cork D R Hall H David V Nandagopal |
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Affiliation: | (1) Tropical Development and Research Institute, 56/62 Gray's Inn Road, WC1X 8LU London, England;(2) Sugarcane Breeding Institute, 641007 Coimbatore, India |
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Abstract: | Four pheromonal components have been detected in ovipositor washings and volatiles from female sugarcane stalk borers,Chilo auricilius Dudgeon (Lepidoptera: Pyralidae), using combined gas chromatography-electroantennography. The components have been identified as (I) (Z)-7-do-decenyl acetate, (II) (Z)-8-tridecenyl acetate, (III) (Z)-9-tetradecenyl acetate, and (IV) (Z)-10-pentadecenyl acetate by comparison of their gas chromatographic behavior with that of synthetic standards. In field tests carried out in northern India during 1982–1984, a combination of II, III, and IV in their naturally occurring ratio (841) was shown to provide a highly attractive synthetic source for trap use. (Z)-7-Dodecenyl acetate was found to reduce catches of maleC. auricilius, both when dispensed with the other three components and when released from dispensers surrounding a trap baited with the other three components. |
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Keywords: | Sugarcane stalk borer Chilo auricilius Lepidoptera Pyralidae sex pheromone sex attractant (Z)-7-dodecenyl acetate (Z)-8-tridecenyl acetate (Z)-9-tetradecenyl acetate (Z)-10-pentadecenyl acetate |
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