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J Chem Ecol

Title:		"Genetic control of the enantiomeric composition of ipsdienol in the pine engraver, Ips pini"
Author(s):		Domingue MJ; Starmer WT; Teale SA;
Address:		"Department of Environmental and Forest Biology, College of Environmental Science and Forestry, State University of New York, Syracuse, NY 13210, USA. mjd29@psu.edu"
Journal Title:		J Chem Ecol
Year:		2006
Volume:		20060520
Issue:		5
Page Number:		1005 - 1026
DOI:		10.1007/s10886-006-9042-y
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"The genetic nature of pheromone variation within species has rarely been studied, and never for male-produced long-range pheromones. Males from western North American populations of Ips pini produce predominantly (R)-(-)-ipsdienol, whereas those from eastern North American populations produce higher proportions of (S)-(+)-ipsdienol. From a population in the hybrid zone, we divergently selected lines for the opposing pheromonal types and then created F1, F2, and backcross lines. We formed additional F1, F2, and backcross lines, first by using populations with low (+)-ipsdienol enantiomeric ratios near to and distant from the hybrid zone, and then by using populations with high (+)-ipsdienol enantiomeric ratios near to and distant from the hybrid zone. Three types of analysis were employed: (1) line means analysis; (2) Mendelian analysis of assigned high and low (+)-ipsdienol enantiomeric ratio phenotypes when applicable; and (3) Castle-Wright estimation of the number of effective factors. Dominance at one autosomal locus explains much of the variation in ipsdienol blend between the divergently selected lines. Thus, as in all previously studied female long-range pheromone systems, a major genetic element is implicated. The populations with low (+)-ipsdienol enantiomeric ratios near and distant to the hybrid zone differ negligibly for this trait. We confirmed previous studies showing slightly higher ratios of (+)-ipsdienol at the hybrid zone than in a distant eastern population and reveal a genetic basis for this difference"
Keywords:		"Acyclic Monoterpenes Animals Coleoptera/*genetics Crosses, Genetic Ecosystem Female Genetic Variation Male Monoterpenes/*chemistry North America Octanols/*chemistry Pheromones/chemistry/*genetics Pinus sylvestris Signal Transduction Stereoisomerism;"
Notes:		"MedlineDomingue, Michael J Starmer, William T Teale, Stephen A eng 2006/06/02 J Chem Ecol. 2006 May; 32(5):1005-26. doi: 10.1007/s10886-006-9042-y. Epub 2006 May 20"