| Title: | Host plant volatiles synergize responses of sex pheromone-specific olfactory receptor neurons in male Helicoverpa zea |
| Author(s): | Ochieng SA; Park KC; Baker TC; |
| Address: | "Department of Entomology, Iowa State University, Ames, IA 50011, USA. sochieng@iastate.edu" |
| Journal Title: | J Comp Physiol A Neuroethol Sens Neural Behav Physiol |
| DOI: | 10.1007/s00359-002-0308-8 |
| ISSN/ISBN: | 0340-7594 (Print) 0340-7594 (Linking) |
| Abstract: | "Single-cell electrophysiological recordings were obtained from olfactory receptor neurons in antennal trichoid sensilla of male corn earworm, Helicoverpa zea. Spontaneous activity of the neuron specific for the major component ( Z)-11-hexadecenal, the conspecific female-emitted sex pheromone, was not affected by exposure to host plant volatiles. However, stimulations with binary mixtures of a threshold dosage of the pheromone component and increasing dosages of either linalool or ( Z)-3-hexenol significantly synergized the pheromone-specific neuron's firing rates compared with responses to the major pheromone component alone. Cross-adaptation studies confirmed that the enhanced impulses originated from the pheromone-component-tuned neuron. Because plant volatiles do not stimulate the pheromone-specific neuron when presented alone, the pheromone plus host odor blend would be interpreted as containing more pheromone than it actually does when processed by the pheromone-processing portion of the antennal lobe" |
| Keywords: | "Action Potentials/drug effects/physiology Animal Communication Animals Dose-Response Relationship, Drug Drug Synergism Electrophysiology/methods Female Male Moths/drug effects/*physiology Odorants Olfactory Receptor Neurons/drug effects/*physiology Pherom;" |
| Notes: | "MedlineOchieng, S A Park, K C Baker, T C eng Research Support, U.S. Gov't, Non-P.H.S. Germany 2002/05/16 J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2002 May; 188(4):325-33. doi: 10.1007/s00359-002-0308-8. Epub 2002 Apr 12" |
