Record number :
1412451
Title of article :
Responses in highly selective sensory neurons to blends of pheromone components in the moth Agrotis segetum
Author/Authors :
Carlsson، نويسنده , , Mikael A. and Hansson، نويسنده , , Bill.S.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
9
From page :
443
To page :
451
Abstract :
Pheromone detecting sensory neurons in moths are known to be highly sensitive and selective. Female-emitted sexual pheromones are normally mixtures of a few to several components. However, not much is known about how receptor neurons respond to blends of compounds. In the present study we investigated how four physiological types of pheromone component-selective neurons responded to binary mixtures or to the complete blend in the turnip moth Agrotis segetum. We found that responses to mixtures only rarely differed from that to the excitatory component alone. The mixture interactions were exclusively suppressive and occurred only at high concentrations. Therefore we conclude that the, in A. segetum, commonly observed mixture interactions observed in higher brain centra are mainly the result of central nervous processing and that information about the pheromone components reaches the antennal lobes virtually unaltered. In addition, we found a physiological type of receptor neuron, responding selectively to one of the female-emitted pheromone components, that has previously not been observed in the Swedish population.
Keywords :
Single-sensillum recording , Olfactory coding , Mixture interaction , pheromone , Agrotis segetum
Journal title :
Journal of Insect Physiology
Serial Year :
2002
Link To Document :
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