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J Chem Ecol

Title:		"Male-produced sex attractant pheromone of the green stink bug, Acrosternum hilare (Say)"
Author(s):		McBrien HL; Millar JG; Gottlieb L; Chen X; Rice RE;
Address:		"Department of Entomology, University of California, Riverside 92521, USA"
Journal Title:		J Chem Ecol
Year:		2001
Volume:		27
Issue:		9
Page Number:		1821 - 1839
DOI:		10.1023/a:1010460709535
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Sexually mature virgin adult males of the green stink bug, Acrosternum hilare attracted sexually mature virgin adult females in laboratory bioassays using a vertical Y-tube. There was no indication that males attracted other males, or that females attracted either sex. These results suggested that A. hilare males produce a sex pheromone. Extracts of odors collected from sexually mature males contained compounds that were not present in extracts from females or sexually immature males. (4S)-Cis-(Z)-bisabolene epoxide ((4S)-cis-Z-BAE) was the major sex-specific component of the extract. The crude extract was attractive to female A. hilare, but when separated into four fractions, only the portion containing (4S)-cis-Z-BAE and the minor component (4S)-trans-Z-BAE was attractive to females. This fraction was as attractive as the crude extract, suggesting that the former contained all the pheromone components. Neither synthetic (4S)-cis-Z-BAE nor (4S)-trans-Z-BAE alone was attractive to females, but a 95:5 cis:trans blend, mimicing the ratio naturally produced by males, was attractive to females in Y-tube bioassays. Bioassays in a field cage showed that significantly more A. hilare females were attracted to cotton string lures treated with 1 mg of a 95:5 blend of (4S)-cis-Z-BAE and (4S)-trans-Z-BAE placed inside a bouquet of alfalfa than to an alfalfa bouquet containing a pentane-treated control. In field cage studies, attraction of females was greatest during the late afternoon and evening hours, and female A. hilare approached the synthetic pheromone source almost exclusively by walking"
Keywords:		"Animals Biological Assay Female Hemiptera/*chemistry/*physiology Male Odorants Sesquiterpenes/*pharmacology Sex Attractants/*pharmacology *Sexual Behavior, Animal Walking;"
Notes:		"MedlineMcBrien, H L Millar, J G Gottlieb, L Chen, X Rice, R E eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2001/09/08 J Chem Ecol. 2001 Sep; 27(9):1821-39. doi: 10.1023/a:1010460709535"