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  • attractant  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Responses of Japanese Giant Looper Male Moth to Synthetic Sex Pheromone and Related Compounds (1999)
    Springer
    Journal of chemical ecology 25 (1999), S. 1633-1642 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; attractant ; Japanese giant looper ; Ascotis selenaria cretacea ; (Z,Z)-6,9-cis-3,4-epoxynonadecadiene ; field attractant ; disruption ; electroantennogram
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The Japanese giant looper, Ascotis selenaria cretacea, is a serious defoliator of tea gardens in Japan. In Mie Prefecture male moths were dose-dependently attracted to rubber septa baited with 0.1–10.0 mg of the sex pheromone component (Z,Z)-6,9-cis-3,4-epoxynonadecadiene. Monitoring by pheromone traps showed three flight periods (June, July, and August–September). A septum with a 1-mg dose was still active after exposure for over three months in the field, but the number of males captured by the old lure was one fifth of that captured by a fresh lure. The parent 3,6,9-triene, a minor pheromonal component, showed a synergistic effect on male attraction when mixed with the pheromonal epoxydiene at a very low ratio, but the 1:1 mixture hardly captured any male moths. Attraction was also effectively inhibited by the positional isomers (6,7- and 9,10-epoxydienes), which exhibited rather strong electrophysiological activities on the male antennae. When these related compounds were placed around a trap baited with the synthetic pheromone, the number of captured moths remarkably decreased, which indicates the possibility of using the compounds as a disruptant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020897118342
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  • 2
    Electronic Resource
    Electronic Resource
    Sex Pheromone of Japanese Giant Looper, Ascotis selenaria cretacea: Identification and Field Tests (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 2413-2423 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; attractant ; Japanese giant looper ; Ascotis selenaria cretacea ; (Z,Z)-6,9-cis-3,4-epoxynonadecadiene ; (Z,Z,Z)-3,6,9-nonadecatriene ; pheromone biosynthesis-activating neuropeptide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The Japanese giant looper, Ascotis selenaria cretacea, is a serious defoliator of tea gardens in Japan. GC-MS analysis of the virgin female extract confirmed the presence of (Z,Z)-6,9-cis-3,4-epoxynonadecadiene. This compound had attracted male moths in a previous random screening test using C17–C23 epoxydienes synthesized in a racemic form. Further GC and HPLC analyses with chiral columns showed that the natural pheromone was composed of 3S,4R and 3R,4S isomers in a ratio of 53:47, although the field evaluation revealed stronger activity of the pure 3R,4S epoxide than of other enantiomeric mixtures. This result indicates that the sexual communication system of this Japanese subspecies differs from that of the species in Israel, which is selectively attracted to an isomer with the opposite configuration. Interestingly, the 3S,4R epoxide attracted another geometric male, Alcis angulifera, in our field tests. (Z,Z,Z)-3,6-9-Nonadecatriene, a parent olefinic compound of the epoxy pheromone, was also identified in the gland extract of A. s. cretacea, but its effect on the attractive activity of the epoxide was not assured in field tests. The amount of the triene increased in the virgin female during photophase and also after decapitation. The epoxy component completely disappeared after decapitation, but could be increased by an injection of subesophageal ganglion extract. The data suggest that the triene is a biosynthetic precursor of the epoxide and that a neuropeptide hormone (PBAN) regulates the epoxydation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006683.58028.1e
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