Abstract
The specificity of receptor cells specialized for the bark beetle pheromone component, ipsdienol, was studied electrophysiologically (extracellular recordings) in species ofIps. Single cells were tested with both ipsdienol enantiomers, their racemate, and racemates of structurally similar compounds. The two cell types, keyed to (+)- and to (−)-ipsdienol, respectively, showed much weaker responses to the analogues, demonstrating the high specialization of the cells. The relationships between the dose-response curves of the two types were similar, favoring the concept of particular membrane receptor types (acceptors) in both cell types.
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