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Journal of Chemical Ecology

, Volume 17, Issue 6, pp 1205–1219 | Cite as

Sex pheromone of female african white rice stem borer,Maliarpha separatella (Lepidoptera: Pyralidae) from Sierra Leone: Identification and field testing

  • A. Cork
  • M. Agyen-Sampong
  • S. J. Fannah
  • P. S. Beevor
  • D. R. Hall
Article

Abstract

Analysis of ovipositor washings of femaleMaliarpha separatella from Sierra Leone by high-resolution gas chromatography (GC) linked to a male electroantennograph (EAG) indicated the presence of three electrophysiologically active compounds. The GC retention times of these compounds were consistent with those of (Z)-9-tetradecen-1-ol, (Z,E)-9,12-tetradecadien-1-ol, and (E,E)-10,12-tetradecadien-1-ol. Analysis by El and CI mass spectrometry of ovipositor washings confirmed these identifications and also indicated the presence of the saturated analog, tetradecan-1-ol. There was no evidence, from these analyses, of the corresponding aldehydes or acetates. The EAG-active compounds were present in the ovipositor washings in a ratio of approximately 2∶3.5∶1, with the major component constituting approximately 0.4 ng per ovipositor. GC-MS analysis of entrained female effluvia confirmed that the EAG-active compounds were released by virgin females. Field testing of the EAG-active compounds indicated that (Z,E)-9,12-tetradecadien-1-ol and (E,E)10,12-tetradecadien-1-ol were attractive to male moths in ratios of between 9:1 and 39:1, while (Z)-9-tetradecen-1-ol was found to reduce trap catch when added to blends of the other two compounds.

Key words

Maliarpha separatella (Z)-9-tetradecen-1-ol (Z,E)-9,12-tetradecadien-1-o1 (E,E)-10,12-tetradecadien-1-o1 sex pheromone Lepidoptera Pyralidae 

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Copyright information

© Plenum Publishing Corporation 1991

Authors and Affiliations

  • A. Cork
    • 1
  • M. Agyen-Sampong
    • 2
  • S. J. Fannah
    • 2
  • P. S. Beevor
    • 1
  • D. R. Hall
    • 1
  1. 1.Natural Resources InstituteChathamUK
  2. 2.West African Rice Development AssociationRegional Mangrove Swamp Rice Research StationFreetown

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