You are here: Home
/ Publication Information
Title: Electrophysiological and olfactometer responses of two histerid predators to three pine bark beetle pheromones
Author: Shepherd, William P.; Sullivan, Brian T.; Goyer, Richard A.; Klepzig, Kier D.
Source: Journal of Chemical Ecology, Vol. 31(5): 1101-1110
Description: We measured electrophysiological responses in the antennae of two predaceous hister beetles, Platysoma parallelum and Plegaderus transversus, exposes to racemic mixtures of primary aggregation pheromones of scolytid bark beetle prey, ipsenol, ipsdienol, and frontalin. No significant differences were found for either histerid species between male and female antennal responses to any of the three pheromones. Measurement of antennal threshold responses indicated that Pla. parallelum has increasing antennal sensitivity to ipsdienol, ipsenol, and frontalin. In contract, Ple. transversus exhibited similar detection thresholds to all three pheromones. Pla. parallelum antennae exhibited different response amplitudes to the three pheromones at quantities about the detection threshold, while Ple. transversus had similar responses to each. Behavioral responses to the same three pheromones were evaluated for both histerid species using pedestrian olfactometer bioassays. Both species attracted to frontalin and ipsenol, but not ipsdienol. Pla. parallelum was significantly more attracted to frontalin than ipsenol, while Ple. transversus showed no significant preference for either compound. Our results suggest that histerids that prey upon pine bark beetles may have different host or host habitat preferences, which could reduce interspecific competition.
View or Print this Publication (543 KB bytes)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
Shepherd, William P.; Sullivan, Brian T.; Goyer, Richard A.; Klepzig, Kier D. 2005. Electrophysiological and olfactometer responses of two histerid predators to three pine bark beetle pheromones. Journal of Chemical Ecology, Vol. 31(5): 1101-1110
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility