Identification of a Novel Moth Sex Pheromone Component from Chilecomadia valdiviana

Heidy Herrera; Wilson Barros-Parada; M. Fernanda Flores; Wittko Francke; Eduardo Fuentes-Contreras; Marcela Rodriguez; Francisca Santis; Paulo H. G. Zarbin; Jan Bergmann

Keywords: Wood-boring insect, Carpenter worm, Male attractant, Homoconjugated double bonds, Lepidoptera, Cossidae


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 euca- lyptus. This causes weakening and, in case of severe infesta- tion, death of the tree. We report identification of the sex pheromone produced by females of this species. Hexane ex- tracts of the abdominal glands of virgin females were analyzed by gas chromatography (GC) with electro antennographic 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.

Más información

Título de la Revista: J Chem Ecol
Volumen: 42
Fecha de publicación: 2016
Página de inicio: 902
Página final: 908
Idioma: English
Notas: ISE