The scarab beetleAnomala albopilosa sakishimana utilizes the same sex pheromone blend as a closely related and geographically isolated species,Anomala cuprea |
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Authors: | Walter Soares Leal Futoshi Kawamura Mikio Ono |
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Affiliation: | (1) Department of Insect Physiology and Behavior, National Institute of Sericultural and Entomological Science (NISES), 1-2 Ohwashi, 305 Tsukuba-shi, Japan;(2) Okinawa Prefectural Agricultural Experiment Station, Miyako Branch, 2071-40 Nishizato, Hirara, 906 Okinawa, Japan;(3) Fuji Flavor Co. Ltd., 3-5-8 Midorigaoka, Hamura-city, 190-11 Tokyo, Japan |
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Abstract: | Two components were identified in the sex pheromone system of the green chafter,Anomala albopilosa sakishimana Nomura: (R,Z)-5-(–)-(oct-1-enyl)oxacyclopentan-2-one (buibuilactone) and (R,Z)-5-(–)-(dec-1-enyl)oxyacyclopentan-2-one (japonilure), which have been previously identified as sex pheromone constituents ofA. cuprea andA. octiescostata. A female-specific minor component, (R,E)-5-(–)-(oct-1-enyl)oxacyclopentan-2-one, did not seem to be involved in pheromonal communication because it was not EAD active, but its role remained unclear. A synthetic blend of the two components captured significantly more beetles than any other treatments. Nevertheless, the fact that both the synthetic sex pheromone and field-captured female beetles were weak lures convinced us that the sex pheromone system may be only part of a complex communication system, probably involving plant volatiles. Although the sex pheromone was released during both the scotophase and photophase, there was an increase of 60% in the photophase. |
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Keywords: | Coleoptera Scarabaeidae (R Z)-5-(– )-oct-1-enyl)oxacyclopentan-2-one (R Z)-5-(– )-(dec-1-enyl)oxacyclopentan-2-one (R E)-5-(– )-(oct-1-enyl)oxacyclopentan-2-one Anomala albopilosa sakishimana Anomala octiescostata Anomala cuprea pheromone release GC-EAD |
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