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J Chem Ecol

Title:		"Male-Produced Aggregation Pheromone of the Sloe Bug, Dolycoris baccarum L. (Hemiptera: Heteroptera: Pentatomidae)"
Author(s):		Yang CY; Seo MH; Lee SC;
Address:		"Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Wanju, Republic of Korea. cyyang@korea.kr. Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Wanju, Republic of Korea"
Journal Title:		J Chem Ecol
Year:		2019
Volume:		20191028
Issue:		10
Page Number:		818 - 822
DOI:		10.1007/s10886-019-01110-3
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"The sloe bug, Dolycoris baccarum L. (Hemiptera: Heteroptera: Pentatomidae), is a Palearctic species and an important polyphagous pest. Previous studies have reported that male D. baccarum produce an aggregation pheromone, to which conspecific adults of both sexes respond. We used solid-phase microextraction (SPME) to collect volatiles released by sexually mature virgin males and females, and identified potential components of the male-produced aggregation pheromone. Analysis of the SPME samples by gas chromatography-mass spectrometry (GC-MS) revealed three male-specific components, alpha-bisabolol, trans-alpha-bergamotene, and beta-bisabolene, at a ratio of 100:10:3. A field trapping experiment showed that (+/-)-alpha-bisabolol alone attracted D. baccarum adults, and it was synergized by trans-alpha-bergamotene, but not (S)-beta-bisabolene. However, neither trans-alpha-bergamotene nor (S)-beta-bisabolene was attractive individually. A binary blend of (+/-)-alpha-bisabolol and trans-alpha-bergamotene in a 10:1 ratio was less attractive than caged live males, suggesting that further study is necessary to determine the absolute configuration or steroisomeric composition of the natural pheromone components. This is the first report of alpha-bisabolol and trans-alpha-bergamotene as semiochemicals among Pentatomidae, and the first to identify alpha-bisabolol from insects"
Keywords:		"Animals Behavior, Animal/drug effects Female Gas Chromatography-Mass Spectrometry Heteroptera/chemistry/*physiology Male Monocyclic Sesquiterpenes/analysis/isolation & purification/pharmacology Sex Attractants/*analysis/isolation & purification/pharmacolo;"
Notes:		"MedlineYang, Chang Yeol Seo, Mi Hye Lee, Seong Chan eng PJ01270003/Rural Development Administration (KR)/ 2019/10/30 J Chem Ecol. 2019 Oct; 45(10):818-822. doi: 10.1007/s10886-019-01110-3. Epub 2019 Oct 28"