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Chem Senses

Title:		The pheromone frontalin and its dual function in the invasive bark beetle Dendroctonus valens
Author(s):		Liu Z; Xu B; Miao Z; Sun J;
Address:		"State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road 1-5, Chaoyang District, Beijing 100101, China. liuzd@ioz.ac.cn"
Journal Title:		Chem Senses
Year:		2013
Volume:		20130429
Issue:		6
Page Number:		485 - 495
DOI:		10.1093/chemse/bjt019
ISSN/ISBN:		1464-3553 (Electronic) 0379-864X (Linking)
Abstract:		"The red turpentine beetle, Dendroctonus valens LeConte, is one of the most destructive invasive forest pests in China, having killed more than 6 million pines since its first outbreak in 1999. Little is known about D. valens pheromone biology and no aggregation pheromone has yet been identified. Analysis by gas chromatograph/mass spectrometer of volatiles collected from live beetles in China showed that female beetles produce frontalin and males do not. Olfactory assays in the laboratory showed that males were attracted to frontalin at a wide range of concentrations, whereas females were attracted to it at a narrow range of concentrations. In field trials, 3-carene, a monoterpene kairomone from a pine tree selected to host the beetles attracted both sexes, and when frontalin was added, the total number of beetles captured increased by almost 200%. However, increasing concentrations of frontalin significantly decreased the percentage of female beetles trapped. These results suggest a new role of frontalin as an aggregation pheromone in addition to a female-produced sex pheromone, which was previously shown in a North American population. The dual functions of the pheromone frontalin produced by D. valens females, as well as its ecological significance for overcoming host resistance, are discussed"
Keywords:		"Animals Bridged Bicyclo Compounds, Heterocyclic/analysis/*metabolism Coleoptera/*physiology Female Male aggregation pheromone bark beetle Dendroctonus valens dual function ecological adaptation frontalin gas chromatography-mass spectrometry (GC-MS) olfact;"
Notes:		"MedlineLiu, Zhudong Xu, Bingbing Miao, Zhenwang Sun, Jianghua eng Research Support, Non-U.S. Gov't England 2013/05/01 Chem Senses. 2013 Jul; 38(6):485-95. doi: 10.1093/chemse/bjt019. Epub 2013 Apr 29"