title: Identification of a Novel Moth Sex Pheromone Component from Chilecomadia valdiviana.
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.
authors.affiliation: Instituto de Química, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
authors.forename: Heidy
authors.initials: H
authors.lastname: Herrera
authors.affiliation: Millennium Nucleus Center in Molecular Ecology and Evolutionary Applications in the Agroecosystems (CEM), Facultad de Ciencias Agrarias, Universidad de Talca, Talca, Chile.
authors.forename: Wilson
authors.initials: W
authors.lastname: Barros-Parada
authors.affiliation: Instituto de Química, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
authors.forename: M Fernanda
authors.initials: MF
authors.lastname: Flores
authors.affiliation: Institute of Organic Chemistry, University of Hamburg, Hamburg, Germany.
authors.forename: Wittko
authors.initials: W
authors.lastname: Francke
authors.affiliation: Millennium Nucleus Center in Molecular Ecology and Evolutionary Applications in the Agroecosystems (CEM), Facultad de Ciencias Agrarias, Universidad de Talca, Talca, Chile.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Fuentes-Contreras
authors.affiliation: Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile.
authors.forename: Marcela
authors.initials: M
authors.lastname: Rodriguez
authors.affiliation: Instituto de Química, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
authors.forename: Francisca
authors.initials: F
authors.lastname: Santis
authors.affiliation: Departamento de Química, Universidade Federal do Paraná, Curitiba, Brazil.
authors.forename: Paulo H G
authors.initials: PH
authors.lastname: Zarbin
authors.affiliation: Instituto de Química, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile. jan.bergmann@ucv.cl.
authors.forename: Jan
authors.identifier: http://orcid.org/0000-0003-3566-1979
authors.initials: J
authors.lastname: Bergmann
mesh_terms: D000447:Aldehydes / Q000032:analysis / Q000378:metabolism; D000466:Alkadienes / Q000032:analysis / Q000378:metabolism; D000818:Animals; D002849:Chromatography, Gas; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D008297:Male; D009036:Moths / Q000737:chemistry* / Q000378:metabolism; D012724:Sex Attractants / Q000032:analysis* / Q000378:metabolism; D013055:Spectrophotometry, Infrared; D014197:Trees / Q000469:parasitology
chemical_list: C587835:9-hexadecenal; D000447:Aldehydes; D000466:Alkadienes; D012724:Sex Attractants; C558532:(Z,Z)-7,11-hexadecadienal
keywords: Carpenter worm; Cossidae; Homoconjugated double bonds; Lepidoptera; Male attractant; Wood-boring insect