Journal of Chemical Ecology p. 2097 - 2107 (2001)
Update date:2022-08-16
Topics:
Cabrera, Aivle
Eiras, Alvaro E.
Gries, Gerhard
Gries, Regine
Urdaneta, Neudo
Miras, Beatriz
Badji, Cesar
Jaffe, Klaus
Five candidate pheromone components were identified by analyzing pheromone gland extracts by gas chromatography (GC), coupled GC-electro-antennographic detection (EAD), and coupled GC-mass spectrometry (MS): (E)-11-hexadecenol(E11-16: OH), (Z)-11-hexadecenol(Z11-16: OH), (E)-11-hexadecenal, (E)-11-hexadecenyl acetate, and (Z)-3,(Z)-6,(Z)-9-tricosatriene (Z3,Z6,Z9-23: Hy). In electroantennogram (EAG) recordings, synthetic E11-16: OH elicited stronger antennal responses at low doses than other candidate pheromone components. Field tests demonstrated that synthetic E11-16: OH as a trap bait was effective in attracting males, whereas addition of Z11-16: OH inhibited the males' response. Z3,Z6,Z9-23 : Hy strongly enhanced attractiveness of E11-16: OH, but was not attractive by itself. A pheromone blend with synergistic behavioral activity of an alcohol (E11- 16: OH) and hydrocarbon (Z3,Z6,Z9-23: Hy) component is most unusual in the Lepidoptera. The synthetic two-component pheromone is approximately 60 times more attractive than the female-produced blend and might facilitate the control of this pest.
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