Journal of Chemical Ecology

, Volume 12, Issue 6, pp 1417–1429 | Cite as

Sex pheromone ofEupoecilia ambiguella female: Analysis and male response to ternary blend

  • Heinrich Arn
  • Stefan Rauscher
  • Hans -Rudolf Buser
  • Patrick M. Guerin
Article

Abstract

Sex gland extracts and washes ofEupoecilia ambiguella contain 10–20 ng/female of the primary sex pheromone componentZ-9-dodecenyl acetate (Z9–12∶Ac), accompanied by a number of related compounds. These areE-9-dodecenyl acetate (E9–12∶Ac),Z-9-dodecen-1-ol (Z9–12∶OH), saturated acetates of 12, 16, 18, and 20 carbons, and traces of a doubly unsaturated acetate, tentatively identified as a 9,11-dodecadienyl acetate. Octadecyl acetate predominates among the pheromone-related components, making up 1–2, occasionally 20–30 times the amount ofZ9–12∶Ac. The same compounds were also found in field-collected females and in effluvia.Z-9-Undecenyl acetate, which is a male attractant on its own, was also found in a sample of female effluvia. A hierarchy is observed in the ethological function of the pheromone components.Z9–12∶Ac is an attractant forE. ambiguella males. Dodecyl acetate (12∶Ac) is not attractive on its own but augments male catch when added to the main attractant. Addition of 18∶Ac augments attraction only when bothZ9–12∶Ac and 12∶Ac are present. Windtunnel tests demonstrate that 18∶Ac also raises the disorientation threshold, as previously shown for 12∶Ac. Other compounds, with the possible exception of additional saturated acetates, had either no effect on trap catch or, in the case ofE9–12∶Ac,Z9–12∶OH, andE-9,11-dodecadienyl acetate, were inhibitory above a certain level. A blend of roughly equal parts ofZ9–12∶Ac, 12∶Ac, and 18∶Ac provides the best attractant blend forE. ambiguella known to date.

Key Words

Eupoecilia ambiguella Lepidoptera Tortricidae sex pheromone sex attractant synergist Z-9-dodecenyl acetate dodecyl acetate octadecyl acetate 

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Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • Heinrich Arn
    • 1
  • Stefan Rauscher
    • 1
  • Hans -Rudolf Buser
    • 1
  • Patrick M. Guerin
    • 1
  1. 1.Swiss Federal Research StationWädenswilSwitzerland

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