Short-term peripheral sensitization by brief exposure to pheromone components in Spodoptera littoralis.

摘要: In insects, the olfactory system displays a high degree of plasticity. Spodoptera littoralis, pre-exposure males to sex pheromone has been shown increase sensitivity sensory neurons at peripheral level. this study, we have investigated sensitization effect by recording electroantennographic responses male antennae major component (Z,E)-9,11-tetradecadienyl acetate and minor components (Z,E)-9,12-tetradecadienyl (Z)-9-tetradecenyl acetate. Responses conjugated diene 1 10 µg unconjugated ester three different times (11, 22 33 min) after (T = 0 min) were significantly higher than those T = 0, whereas no was elicited any dose monoene addition, pre-exposed sub-threshold amounts (0.1, 10 ng) also induced an increased response chemical (5 15 min) exposure. Our results revealed that isolated display short-term level when compared naive antennae. provide evidence mediated not only component, but acetate, induction appears be dependent on time span between subsequent recordings. Possible implications displayed for more effective discrimination bouquets other closely related species are highlighted.