PMID: 12770167May 29, 2003Paper

Sugar response differences related to sensillum type and location on the labella of Protophormia terraenovae: a contribution to spatial representation of the stimulus

Journal of Insect Physiology
A LisciaR Crnjar

Abstract

The chemoreceptor spike activity in response to sucrose in the concentration range 1-500mM was recorded from each of the 11 Intermediate and 13 Large labellar sensilla in the blowfly Protophormia terraenovae. The results showed that: (1) three of the four cells present in each sensillum are activated by sucrose stimulation; (2) differences between the Large and Intermediate types exist in the dose-response profiles of one of these cells (the 'water' cell), possibly reflecting different sugar receptor site populations on the dendritic membranes of homologous cells in the two types; (3) sensilla of both types are differentially responsive to sucrose solutions according to their location on the labellum. These differences may provide elements for a spatial representation of the stimulus source within the sensory coding process.

References

Oct 1, 1985·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·I ShimadaH Meguro
Sep 2, 1955·Science·E S HODGSONK D ROEDER
Jan 1, 1962·The Journal of General Physiology·D R EVANS, D MELLON
Mar 1, 1962·The Journal of General Physiology·D R EVANS, D MELLON

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Citations

Feb 27, 2013·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Alexandra PopescuSylvia Anton

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