title: (Z)-11-Hexadecenal and (3Z,6Z,9Z)-tricosatriene: sex pheromone components of the red banded mango caterpillar Deanolis sublimbalis.
abstract: The sex pheromone of the red banded mango caterpillar, Deanolis sublimbalis (Lepidoptera: Crambidae), a serious pest of the mango Mangifera indica (Anacardiaceae) in India and Southeast Asia and a recent invader into northern Australia, has been identified. Three candidate compounds were identified from pheromone gland extracts of female moths, using gas chromatography (GC), GC-electroantennographic detection and GC-mass spectrometric analyses, in conjunction with dimethyldisulfide derivatization. Field bioassays established that both (Z)-11-hexadecenal (Z11-16:Ald) and (3Z,6Z,9Z)-tricosatriene (3Z,6Z,9Z-23:Hy) were required for attraction of male D. sublimbalis moths, and 1000 microg of a 1:1 mix of Z11-16:Ald and 3Z,6Z,9Z-23:Hy was more attractive to male moths than caged virgin females. However, the binary blend was only attractive when the isomeric purity of the monounsaturated aldehyde was >99%, suggesting that the (E)-isomer was inhibitory. Although (Z)-11-hexadecen-1-ol (Z11-16:OH) was tentatively identified in gland extracts, the addition of this compound to the binary blend did not increase the numbers of moths captured. The pheromone can now be used in integrated pest management strategies.
authors.affiliation: Horticulture and Food Research Institute of New Zealand Ltd., P.O. Box 51, Lincoln, New Zealand. agibb@hortresearch.co.nz
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Gibb
authors.forename: Bruno
authors.initials: B
authors.lastname: Pinese
authors.forename: David
authors.initials: D
authors.lastname: Tenakanai
authors.forename: Annastasia P
authors.initials: AP
authors.lastname: Kawi
authors.forename: Barry
authors.initials: B
authors.lastname: Bunn
authors.forename: Padmaja
authors.initials: P
authors.lastname: Ramankutty
authors.forename: D Max
authors.initials: DM
authors.lastname: Suckling
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D000818:Animals; D002849:Chromatography, Gas; D005260:Female; D008297:Male; D009036:Moths / Q000737:chemistry*; D012724:Sex Attractants / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D012724:Sex Attractants; C061128:11-hexadecenal