Responses of maxillary sensilla styloconica inBombyx mori to glucosides fromOsmunda japonica,a nonhost plant |
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Authors: | Toshiaki Shimizu Mitsuo Yazawa Tsuneo Hirao Narihiko Arai |
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Affiliation: | (1) Department of Insect Physiology and Behavior, The National Institute of Sericulture and Insect Science, 1-2 Ohwashi, Tsukuba, 305 Ibaraki, Japan;(2) The National Institute of Agrobiological Resources, Kannondai, Tsukuba, 305 Ibaraki, Japan |
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Abstract: | We isolated glucosides from the royal fern,Osmunda japonica, which elicit a deterrent response in larvae ofBombyx mori. These compounds were absent in taro (Colocasia antiquorum) and castor-oil plant (Ricinus communis) leaves and did not evoke responses of sensory cells in the lateral and medial sensilla styloconica ofSpodoptera litura. This glucoside extract of the royal fern leaves stimulates receptors generally associated with deterrent. It is also possible that this compound may act as a behavioral deterrent, and from actual feeding tests, it is suggested that this compound may prevent feeding in some monophagous insects, such asBombyx mori. The deterrent glucoside possesses a noncyclic aglycon. |
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Keywords: | Bombyx mori Lepidoptera Bombicidae Noctuidae Spodoptera litura sensilla styloconica royal fern Osmunda japonica electrophysiological response |
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