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Olfactory protocerebral pathways processing sex pheromone and plant odor information in the male moth Agrotis segetum

Lei, H; Anton, Sylvia LU and Hansson, Bill S (2001) In Journal of Comparative Neurology 432(3). p.356-370
Abstract
We investigated protocerebral processing of behaviorally relevant signals in the turnip moth, Agrotis segetum. Single neurons were studied both physiologically and morphologically using intracellular recording techniques. In moth pheromone communication systems, the presence of the complete, female-produced pheromone blend is necessary for male attraction. We predicted that more protocerebral neurons, compared with AL, would display blend interactions. However, only a few protocerebral neurons responded differently to the blend than could be deduced from the response to single components. The majority of the pheromone-sensitive protocerebral neurons identified in this study responded to the major pheromone component. In coding time, most... (More)
We investigated protocerebral processing of behaviorally relevant signals in the turnip moth, Agrotis segetum. Single neurons were studied both physiologically and morphologically using intracellular recording techniques. In moth pheromone communication systems, the presence of the complete, female-produced pheromone blend is necessary for male attraction. We predicted that more protocerebral neurons, compared with AL, would display blend interactions. However, only a few protocerebral neurons responded differently to the blend than could be deduced from the response to single components. The majority of the pheromone-sensitive protocerebral neurons identified in this study responded to the major pheromone component. In coding time, most AL neurons can follow a 5-Hz odor stimulus, whereas most protocerebral neurons failed at higher frequencies than 1 Hz. The majority of neurons that responded to the odorants tested innervated one or both of the protocerebral lateral accessory lobes. If only one of these was innervated, then the innervation always displayed a varicose appearance, suggesting a presynaptic function. Thus, information seems to be transferred from other protocerebral areas to the lateral accessory lobes. Into these, descending neurons sent smooth, postsynaptic branches. A majority of the neurons innervating the superior medial protocerebrum were found to display single-component specificity. Few additional correlations between odor specificity and structural characteristics were apparent. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Comparative Neurology
volume
432
issue
3
pages
356 - 370
publisher
John Wiley & Sons
external identifiers
  • scopus:0035832121
ISSN
1096-9861
DOI
10.1002/cne.1108
language
English
LU publication?
yes
id
15e2998e-9e1d-4b80-9545-3dd5080755f3 (old id 149701)
date added to LUP
2007-06-27 10:44:37
date last changed
2018-01-07 05:05:21
@article{15e2998e-9e1d-4b80-9545-3dd5080755f3,
  abstract     = {We investigated protocerebral processing of behaviorally relevant signals in the turnip moth, Agrotis segetum. Single neurons were studied both physiologically and morphologically using intracellular recording techniques. In moth pheromone communication systems, the presence of the complete, female-produced pheromone blend is necessary for male attraction. We predicted that more protocerebral neurons, compared with AL, would display blend interactions. However, only a few protocerebral neurons responded differently to the blend than could be deduced from the response to single components. The majority of the pheromone-sensitive protocerebral neurons identified in this study responded to the major pheromone component. In coding time, most AL neurons can follow a 5-Hz odor stimulus, whereas most protocerebral neurons failed at higher frequencies than 1 Hz. The majority of neurons that responded to the odorants tested innervated one or both of the protocerebral lateral accessory lobes. If only one of these was innervated, then the innervation always displayed a varicose appearance, suggesting a presynaptic function. Thus, information seems to be transferred from other protocerebral areas to the lateral accessory lobes. Into these, descending neurons sent smooth, postsynaptic branches. A majority of the neurons innervating the superior medial protocerebrum were found to display single-component specificity. Few additional correlations between odor specificity and structural characteristics were apparent.},
  author       = {Lei, H and Anton, Sylvia and Hansson, Bill S},
  issn         = {1096-9861},
  language     = {eng},
  number       = {3},
  pages        = {356--370},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Comparative Neurology},
  title        = {Olfactory protocerebral pathways processing sex pheromone and plant odor information in the male moth Agrotis segetum},
  url          = {http://dx.doi.org/10.1002/cne.1108},
  volume       = {432},
  year         = {2001},
}