Elsevier

Journal of Insect Physiology

Volume 21, Issue 12, December 1975, Pages 1883-1886
Journal of Insect Physiology

Identification of the female sex pheromones of the moth, Chilo suppressalis

https://doi.org/10.1016/0022-1910(75)90218-8Get rights and content

Abstract

The female sex pheromone complex of the striped rice borer, Chilo suppressalis, has been shown to consist of two compounds: (Z)-11-hexadecenal (I) and (Z)-13-octadecenal (II). The pheromones were identified by gas chromatographic analysis, electroantennogram recording, ozonolysis, and comparison with synthetic material.

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    The sex pheromone components of Crambidae species are complex. The primary sex pheromone components of C. suppressalis consist of (Z)-11-hexadecenal, (E)-11-hexadecenal, and (Z)-13-octadecenal, and the secondary components consist of tetradecyl acetate and hexadecyl acetate [59]. In C. punctiferalis, another Crambidae species, the primary sex pheromone components contain (E)-8–10-hexadecenal and (Z)-10-hexadecenal [60], and the secondary components contain (E)-8–10-hexadecenol and hexadecanal [61].

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  • Mating disruption to control the striped rice stem borer: Pheromone blend, dispensing technology and number of releasing points

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    Currently in Spain, C. suppressalis is being controlled by using insect growth regulators and mating disruption or mass trapping methods, especially in environmentally protected areas. C. suppressalis pheromone was first identified as the aldehyde blend containing (Z)-11-hexadecenal (Z11-16:Ald) and (Z)-13-octadecenal (Z13-18:Ald) (Nesbitt et al., 1975; Ohta et al., 1976). It was later demonstrated that the attractant power of this blend was less efficient than that of virgin females.

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    The sex pheromone of female C. suppressalis was initially identified in 1975 as a binary mixture of (Z)-11-hexadecenal (Z11–16:Ald) and (Z)-13 octadecenal (Z13–18:Ald). The pheromone was present in female ovipositor extract (Nesbitt et al., 1975; Ohta et al., 1975, 1976). In 1983, another active compound of the sex pheromone from C. suppressalis, (Z)-9-hexadecenal (Z9–16:Ald), was discovered (Tatsuki et al., 1983).

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