Identification of a Novel Moth Sex Pheromone Component from Chilecomadia valdiviana

Heidy Herrera, WILSON ANGEL BARROS PARADA, M. Fernanda Flores, Wittko Francke, Eduardo Fuentes-Contreras, Marcela Rodriguez, Francisca Santis, Paulo H.G. Zarbin, JAN BERGMANN

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Chilecomadia valdiviana (Philippi) (Lepidoptera: Cossidae) is an insect native to Chile. The larval stages feed on the wood of economically important fruit tree species such as apple, pear, olive, cherry, and avocado, and also on eucalyptus. This causes weakening and, in case of severe infestation, death of the tree. We report identification of the sex pheromone produced by females of this species. Hexane extracts of the abdominal glands of virgin females were analyzed by gas chromatography (GC) with electroantennographic detection, GC coupled with mass spectrometry, and GC coupled to infrared spectroscopy. The major pheromone component was identified as (7Z,10Z)-7,10-hexadecadienal (Z7,Z10–16:Ald), and minor components present in the extracts were (Z)-7-hexadecenal and (Z)-9-hexadecenal, hexadecanal, and (9Z,12Z)-9,12-octadecadienal. Structural assignments were carried out by comparison of analytical data of the natural products and their dimethyl disulfide adducts with those of authentic reference samples. In field tests, traps baited with Z7,Z10–16:Ald captured significantly more males than control traps.

Original languageEnglish
Pages (from-to)908-918
Number of pages11
JournalJournal of Chemical Ecology
Volume42
Issue number9
DOIs
StatePublished - 1 Sep 2016

Keywords

  • Carpenter worm
  • Cossidae
  • Homoconjugated double bonds
  • Lepidoptera
  • Male attractant
  • Wood-boring insect

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