Circadian Rhythm in Sex Pheromone Communication in American Cockroach, Periplaneta Americana L
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چکیده
The circadian rhythm of American cockroach response to sex pheromone was investigated in behavio-ral and electroantennographic tests. Obvious daily changes in behavioral responses of males to synthetic Periplanone B, one of the main components of the female sex pheromone, were not paralleled by concomitant electroantennogram fluctuations. These observations suggest that responses of pheromone receptor cells do not seem to be under circadian control, whilst the central nervous system modulates behavioral responses using circadian information. However. the significantly different amplitude of electroantennogram during only the first hour of experiment implies that peripheral modulation of sex pheromone perception possibly occurs in a stress situation.
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