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J Insect Physiol

Title:		Altered olfactory receptor neuron responsiveness in rare Ostrinia nubilalis males attracted to the O. furnacalis pheromone blend
Author(s):		Domingue MJ; Musto CJ; Linn CE; Roelofs WL; Baker TC;
Address:		"Center for Chemical Ecology, Department of Entomology, Chemical Ecology Laboratory, Penn State University, University Park, PA 16802, USA. mjd29@psu.edu"
Journal Title:		J Insect Physiol
Year:		2007
Volume:		20070608
Issue:		10
Page Number:		1063 - 1071
DOI:		10.1016/j.jinsphys.2007.05.013
ISSN/ISBN:		0022-1910 (Print) 0022-1910 (Linking)
Abstract:		"Three percent of E-strain Ostrinia nubilalis males fly upwind in response to the Ostrinia furnacalis pheromone blend [a 40:60 ratio of (E)-12-tetradecenyl acetate to (Z)-12-tetradecenyl acetate (E12-14:OAc to Z12-14:OAc)], in addition to their own pheromone blend [a 99:1 ratio of (E)-11-tetradecenyl acetate to (Z)-11-tetradecenyl acetate) (E11-14:OAc to Z11-14:OAc)]. We assessed the olfactory receptor neuron (ORN) responses of these behaviorally 'rare' males versus those of normal males. For the three ORNs housed within each sensillum, we tested responsiveness to Z12-14:OAc, E12-14:OAc, Z11-14:OAc, E11-14:OAc, and the behavioral antagonist (Z)-9-tetradecenyl acetate (Z9-14:OAc). Z11-14:OAc, E11-14:OAc, and Z9-14:OAc stimulated ORNs exhibiting distinct small, large, and medium spike sizes, respectively. For rare and normal males, both Z12-14:OAc and E12-14:OAc usually elicited responses from the largest-spiking ORN. In many ORNs of normal males, Z12-14:OAc or E12-14:OAc stimulated the smaller-spiking ORN that is responsive to Z11-14:OAc. In rare males, detectable ORN responses from the smaller-spiking ORN in response to Z12- and E12-14:OAc were virtually non-existent. These differences in ORN tuning in rare males will tend to create an ORN firing ratio between the large- and small-spiking ORNs in response to the O. furnacalis blend that is similar to that elicited by the O. nubilalis blend"
Keywords:		Animals Electrophysiology Female Male Moths/*physiology Olfactory Receptor Neurons/*physiology Pheromones/*physiology;
Notes:		"MedlineDomingue, Michael J Musto, Callie J Linn, Charles E Jr Roelofs, Wendell L Baker, Thomas C eng Research Support, U.S. Gov't, Non-P.H.S. England 2007/07/13 J Insect Physiol. 2007 Oct; 53(10):1063-71. doi: 10.1016/j.jinsphys.2007.05.013. Epub 2007 Jun 8"