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J Chem Ecol

Title:		"Unsaturated cuticular hydrocarbons synergize responses to sex attractant pheromone in the yellow peach moth, Conogethes punctiferalis"
Author(s):		Xiao W; Matsuyama S; Ando T; Millar JG; Honda H;
Address:		"College of Plant Protection, Southwest University, 216 Tiansheng Road, Beibei, Chongqing 400715, China. sinoshawwe@hotmail.com"
Journal Title:		J Chem Ecol
Year:		2012
Volume:		20120818
Issue:		9
Page Number:		1143 - 1150
DOI:		10.1007/s10886-012-0176-9
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"Four trienyl hydrocarbons, (Z3, Z6, Z9)-tricosatriene (Z3, Z6, Z9-23:HC), (Z3, Z6, Z9)-pentacosatriene (Z3, Z6, Z9-25:HC), (Z3, Z6, Z9)-heptacosatriene (Z3, Z6, Z9-27:HC), and (Z3, Z6, Z9)-nonacosatriene (Z3, Z6, Z9-29:HC) were identified in a non-polar fraction of the body wax of male and female yellow peach moth, Conogethes punctiferalis. The relative amounts and ratios of these hydrocarbons differed between sexes. In females, the ratios in body wax and pheromone gland extracts were similar, with lesser amounts found in gland extracts. Synergistic effects of these hydrocarbons when added to the known aldehyde pheromone components were assessed in wind tunnel tests. A blend of (E)-10-hexadecenal (E10-16: Ald) and (Z)-10-hexadecenal (Z10-16: Ald) elicited upwind flight and orientation of males to the pheromone source, but arriving males did not remain close to source for very long. Among the hydrocarbons identified, only Z3, Z6, Z9-23:HC enhanced the activity of the aldehyde blend by increasing the time spent close to the source and the number of source contacts. Z3, Z6, Z9-23:HC and (Z9)-heptacosene (Z9-27:HC) also increased close-range responses to the aldehyde blend. The activity of the aldehyde blend plus these two hydrocarbons was similar to that of crude pheromone extract. Positive dose-response relationships between the aldehyde blend and two hydrocarbon mixtures were found. The lowest doses that elicited synergism were 10(-1) female equivalents (of body wax extracts) for the two hydrocarbons, and 10(-2) female equivalents for the total unsaturated hydrocarbon mixture"
Keywords:		"Animals Chromatography, Liquid Drug Synergism Ethers/chemistry Female Hexanes/chemistry Hydrocarbons/analysis/*chemistry/isolation & purification/*pharmacology Male Moths/*chemistry/*drug effects Sex Attractants/analysis/*chemistry/isolation & purificatio;"
Notes:		"MedlineXiao, Wei Matsuyama, Shigeru Ando, Tetsu Millar, Jocelyn G Honda, Hiroshi eng 2012/08/21 J Chem Ecol. 2012 Sep; 38(9):1143-50. doi: 10.1007/s10886-012-0176-9. Epub 2012 Aug 18"