Optical imaging of odor-evoked glomerular activity patterns in the antennal lobes of the ant Camponotus rufipes

C. G. Galizia, R. Menzel, B. Hölldobler

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

Ants have a well developed olfactory sense, which they need both for the perception of environmental chemicals, and for a highly sophisticated intraspecific communication system based on pheromones. The question arises therefore as to how different odors are coded in the antennal lobe, the first central neuropil to process olfactory information. We measured odor-evoked activity patterns using in vivo neuropil calcium recording in the antennal lobe of the ant Camponotus rufipes. We found that (a) odors elicit focal activity spots (diameter ca. 20 μm) which most probably represent the olfactory glomeruli; (b) different odors are coded in odor specific patterns of such activated spots, and a particular spot can participate in the pattern for different odors; (c) calcium increased in the activated spots within the 2-s stimulation period and slowly declined thereafter.

Original languageEnglish (US)
Pages (from-to)533-537
Number of pages5
JournalNaturwissenschaften
Volume86
Issue number11
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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