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J Comp Physiol A

Title:		The contribution of olfactory receptor neurons to the perception of pheromone component ratios in male redbanded leafroller moths
Author(s):		Akers RP; O'Connell RJ;
Address:		"Worcester Foundation for Experimental Biology, Shrewsbury, Massachusetts 01545"
Journal Title:		J Comp Physiol A
Year:		1988
Volume:		163
Issue:		5
Page Number:		641 - 650
DOI:		10.1007/BF00603848
ISSN/ISBN:
Abstract:		"(Z)-11-tetradecenyl acetate (Z-11, 14:AC) must be in a 100:9 ratio with (E)-11-tetradecenyl acetate (E-11,14:AC) to produce maximal wing fanning and attraction in male redbanded leafrollers. Earlier electrophysiological studies had indicated that mixtures of these pheromone components elicited responses from olfactory receptor neurons that appeared to differ from those expected on the basis of the responses to the individual components. Here we evaluate whether the behavioral sensitivity to particular ratios of Z- and E-11,14:AC has a correlate in the response properties of olfactory receptor neurons. The stimuli included the ratios of Z- and E-11,14:AC used in earlier behavioral work plus several different mixtures of the seven components found in the pheromone blend, and equivalent amounts of the individual components. These stimuli were presented over a range of intensities to individual trichoid sensilla on the male antenna. In common with earlier results, the receptor neuron with the larger amplitude action potential responded most strongly to Z-11,14:AC, whereas the companion receptor neuron in the sensillum responded most strongly to E-11,14:AC. In contrast with earlier results, each receptor neuron responded exclusively to its own most effective stimulus, without regard to the presence of any other compound. They failed to respond uniquely to any of the other five compounds in the female pheromone blend, or to any of the tested combinations of these compounds. These minor components also failed to modulate the responses elicited in receptor neurons by appropriate ratios of Z- and E-11,14:AC. Thus, the responses of the two types of olfactory receptor neurons found in trichoid sensilla failed to show an optimum at the pheromone ratio known to elicit peak behavioral activity"
Keywords:		"Action Potentials Animals Chemoreceptor Cells/*physiology Lepidoptera/*physiology Male Moths/*physiology Neurons, Afferent/*physiology Pheromones/*physiology Sex Attractants/*physiology;"
Notes:		"MedlineAkers, R P O'Connell, R J eng NS 14453/NS/NINDS NIH HHS/ NSO7913/NS/NINDS NIH HHS/ Research Support, U.S. Gov't, P.H.S. Germany 1988/01/01 J Comp Physiol A. 1988; 163(5):641-50. doi: 10.1007/BF00603848"