Morphology and Physiology of Neurons Responding to the Nasonov Pheromone in the Antennal Lobe of the Honeybee, Apis mellifera
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概要
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Interneurons in the antennal lobe of the worker honeybee brain were stained with Lucifer Yellow and their responses to the Nasonov pheromone were examined. The antennae were stimulated with a synthetic blend of Nasonov pheromone at 5 dose levels, which elicited both behavioral and electroantennogram responses dose-dependently. Morphologically characterized neurons were categorized into 4 classes: projection neurons with axons in the median antenno-glomerular tract and uniglomerular dendritic arborizations in the antennal lobe, Pm(u); projection neurons with axons in the median lateral antenno-glomerular tract and multiglomerular arborizations, Pml(m); projection neurons with axons in the antennal lobe commissure, Pc(m); local interneurons, L(m). All classes of neurons exhibited changes of spike activity in response to the pheromone blend. The temporal patterns of the responses tended to be correlated with these morphological classes: Pm(u) showed mainly phasic-tonic excitation, and in some cases on-off excitation or inhibition; Pc(m) showed slight excitation; Pml(m) and L(m) showed mainly phasic excitation. The response intensity of most cells increased dose-dependently, and the response pattern of some Pm(u) changed with the dose of the blend. These results suggest that signals induced by the Nasonov pheromone are distributed in multiple morphological classes of antennal lobe neurons, each having various response characteristics. The architecture of the bee antennal lobe relating to Nasonov pheromone processing thus appears to be complex.
- 社団法人日本動物学会の論文
- 1995-04-15
著者
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SHIBUYA TATSUAKI
Institute of Biological Sciences, University of Tsukuba
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Shibuya T
Institute Of Biological Sciences University Of Tsukuba
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Iwama Akifumi
Institute Of Biological Sciences University Of Tsukuba
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Sugihara Daiichiro
Institute of Biological Sciences, University of Tsukuba
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Shibuya Tatsuaki
Institute Of Biological Sciences University Of Tsukuba
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Sugihara Daiichiro
Institute Of Biological Sciences University Of Tsukuba
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