Aminergic regulation of pheromone sensillae in the cockroach Periplaneta americana

Tremendous adaptability of insects is predominantly provided by fast tuning of physiological functioning of an organism to the permanently changing environmental conditions. One of the mechanisms of plasticity in insects is modulation of performance of their sense organs by neurohormones. Activity o...

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Bibliographic Details
Published in:Journal of evolutionary biochemistry and physiology 2007-06, Vol.43 (3), p.318-326
Main Author: Zhukovskaya, MI
Format: Article
Language:English
Subjects:
Behavior
Periplaneta americana
Pheromones
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Summary:Tremendous adaptability of insects is predominantly provided by fast tuning of physiological functioning of an organism to the permanently changing environmental conditions. One of the mechanisms of plasticity in insects is modulation of performance of their sense organs by neurohormones. Activity of at least three out of four receptor cells located in cockroach pheromonesensitive sensilla is modulated by octopamine. An increase of firing rate of pheromone receptor cells and a decrease of electroantennogram amplitude is accompanied by enhanced behavioral responses of male cockroaches to sex pheromone. The effect of octopamine on reception of a repellent (1,8-cineole, eucalyptol) by an insect is reported for the first time. Simultaneous modulation of responses of receptor cells located in sex specific sensilla to semantically different odorants indicates their cooperation in formation of insect behavior.
ISSN:0022-0930
1608-3202
DOI:10.1134/S0022093007030064