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J Chem Ecol

Title:		"Semiochemicals from bark beetles: New results, remarks, and reflections"
Author(s):		Francke W; Bartels J; Meyer H; Schroder F; Kohnle U; Baader E; Pierre Vite J;
Address:		"Institut fur Organische Chemie der Universitat Hamburg, Martin-Luther-King-Platz 6, D-20146, Hamburg, Germany"
Journal Title:		J Chem Ecol
Year:		1995
Volume:		21
Issue:		7
Page Number:		1043 - 1063
DOI:		10.1007/BF02033807
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"A brief survey is given about recent results in the identification of semiochemicals in bark beetles: Males ofIps sexdentatus (Boern.), stressed by the attack on resinous trees produce large amounts of 3(S)-1-methyl-5-(1-hydroxyl-1-methylethyl)-cyclohexa-1,3-diene. The compound appears to be derived from Delta(3)-carene and acts as a repellent. Males ofIps typographus (L.), stressed through the attack on unsuitable host material release 3-methyl-7-methylene-1,3(E), 8-nonatriene, which seems to act as a repellent. The odor bouquet of three species ofPityogenes is described. The occurrence of (+)-grandisol and other compounds related to weevil pheromones points to a close relation between Scolytidae and Curculionidae. Females ofDendroctonus simplex (Le Conte) use (-)-frontalin as the main pheromone. 6-Methyl-6-hepten-2-one, a minor component among the volatile compounds released by the females, is regarded as a possible precursor of frontalin. Similarly, (2R,5S)-2(1-hydroxyl-1-methylethyl)-5-methyltetrahydrofuran, pityol, a pheromone ofPityophthorus spp., is regarded to at least share a common biogenetic precursor with 6-methyl-5-hepten-2-ol, sulcatol. A new bicylic acetal, 2-ethyl-1,5-dimethyl-6,8-dioxabicyclo[3.2.1]octane, is described as an aggregation pheromone of the beech bark beetle,Taphrorychus bicolor (Herbst). Structural relationships between bark beetle pheromones and plant volatiles are discussed"
Keywords:
Notes:		"PubMed-not-MEDLINEFrancke, W Bartels, J Meyer, H Schroder, F Kohnle, U Baader, E Pierre Vite, J eng 1995/07/01 J Chem Ecol. 1995 Jul; 21(7):1043-63. doi: 10.1007/BF02033807"