Pflügers Archiv

, Volume 431, Issue 5, pp 786–790 | Cite as

Odor discrimination of "IP3-" and “cAMP-increasing” odorants in the turtle olfactory bulb

  • Makoto Kashiwayanagi
  • Fumiko Nagasawa
  • Kouhei Inamura
  • Kenzo Kurihara
Original Article


The ability of the turtle olfactory system to discriminate between various odorants that increase levels of adenosine 3′,5′-cyclic monophosphate (cAMP) and mositol trisphosphate (IP3) in the olfactory bulb was examined by the cross-adaptation technique and analyzed by multidimensional scaling. The mean values of the degree of discrimination among the IP3-increasing odorants were higher than those among the cAMP-increasing odorants, and were similar to those between cAMP- and IP3-increasing odorants, suggesting that the features of the receptors of cAMP-increasing odorants are different from those which respond to IP3-increasing odorants. Analysis by multidimensional scaling suggested that differences in second messenger pathways are not related to detecting odor quality in the turtle olfactory system.

Key words

Odor discrimination Olfactory bulb cAMP IP3 Cross-adaptation Turtle 


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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • Makoto Kashiwayanagi
    • 1
  • Fumiko Nagasawa
    • 1
  • Kouhei Inamura
    • 1
  • Kenzo Kurihara
    • 1
  1. 1.Faculty of Pharmaceutical SciencesHokkaido UniversitySapporoJapan

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