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Chemical Senses Advance Access originally published online on November 23, 2005
Chemical Senses 2006 31(1):63-67; doi:10.1093/chemse/bjj006
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© The Author 2005. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Specific Projection of the Sensory Crypt Cells in the Olfactory System in Crucian Carp, Carassius carassius

El Hassan Hamdani and Kjell B. Døving

Department of Molecular Biosciences, University of Oslo, PO Box 1041, Blindern, 0316 Oslo, Norway

Correspondence to be sent to: El Hassan Hamdani, Department of Molecular Biosciences, University of Oslo, PO Box 1041, Blindern, 0316 Oslo, Norway. e-mail: elhassan.hamdani{at}bio.uio.no

To study the projection of a special type of sensory neuron called crypt cells in the olfactory system in crucian carp, Carassius carassius, we applied the neural tracer 1,1-dilinoleyl-3,3,3',3'-tetramethylindocarbocyanine perchlorate (DiI) in the olfactory bulb (OB). Small crystals of DiI were applied in a small area at the synaptic region at the ventral part of the OB, where a population of secondary neurons specific for sex pheromones has been identified. In those samples (4 out of 24) where only axons in the lateral bundle of the medial olfactory tract were stained, the majority (50–66%) of olfactory sensory neurons stained were crypt cells situated in the peripheral layer of the olfactory epithelium. Because this bundle of the tract mediates reproductive behavior, it is conceivable that crypt cells express olfactory receptors for sex pheromones.

Key words: convergence, fish, olfaction, projection, receptor neurons, sex


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This article has been cited by other articles:


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A. Vielma, A. Ardiles, L. Delgado, and O. Schmachtenberg
The elusive crypt olfactory receptor neuron: evidence for its stimulation by amino acids and cAMP pathway agonists
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 Chem SensesHome page
E. H. Hamdani, S. Lastein, F. Gregersen, and K. B. Doving
Seasonal Variations in Olfactory Sensory Neurons--Fish Sensitivity to Sex Pheromones Explained?
Chem Senses, February 1, 2008; 33(2): 119 - 123.
[Abstract] [Full Text] [PDF]


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