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Discrimination among pheromone component blends by interneurons in male antennal lobes of two populations of the turnip moth, Agrotis segetum

Wu, Wenqi LU ; Anton, Sylvia LU ; Löfstedt, Christer LU and Hansson, Bill S. (1996) In Proceedings of the National Academy of Sciences of the United States of America 93(15). p.8022-8027
Abstract

A difference in female pheromone production and male behavioral response has previously been found in two populations of the turnip moth, Agrotis segetum, originating from Sweden and Zimbabwe, respectively. In this study, we investigated the pheromone response of antennal lobe interneurons of males of the two populations by intracellular recordings, stimulating with single pheromone components and various inter- and intra-populational pheromone blends. Three major physiological types of antennal lobe neurons were established in the two populations according to their responses to different stimuli. One type responded broadly to almost all the stimuli tested. The second type responded selectively to some of the single components and... (More)

A difference in female pheromone production and male behavioral response has previously been found in two populations of the turnip moth, Agrotis segetum, originating from Sweden and Zimbabwe, respectively. In this study, we investigated the pheromone response of antennal lobe interneurons of males of the two populations by intracellular recordings, stimulating with single pheromone components and various inter- and intra-populational pheromone blends. Three major physiological types of antennal lobe neurons were established in the two populations according to their responses to different stimuli. One type responded broadly to almost all the stimuli tested. The second type responded selectively to some of the single components and blends. The third type did not respond to any single components but did respond to certain blends. Furthermore, some neurons of the second and third type recognized strain specific differences in ratios between pheromone components. Both projection neurons and local interneurons were found among these three types. Two pheromone responding bilateral projection neurons are reported for the first time in this paper.

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Contribution to journal
publication status
published
subject
in
Proceedings of the National Academy of Sciences of the United States of America
volume
93
issue
15
pages
8022 - 8027
publisher
National Acad Sciences
external identifiers
  • pmid:8755596
  • scopus:0029799147
ISSN
0027-8424
DOI
10.1073/pnas.93.15.8022
project
Evolutionary mechanisms of pheromone divergence in Lepidoptera
language
English
LU publication?
yes
id
207bc33f-b19e-4316-aa34-83ac5caa3474
date added to LUP
2020-05-26 16:22:11
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2020-10-20 03:59:17
@article{207bc33f-b19e-4316-aa34-83ac5caa3474,
  abstract     = {<p>A difference in female pheromone production and male behavioral response has previously been found in two populations of the turnip moth, Agrotis segetum, originating from Sweden and Zimbabwe, respectively. In this study, we investigated the pheromone response of antennal lobe interneurons of males of the two populations by intracellular recordings, stimulating with single pheromone components and various inter- and intra-populational pheromone blends. Three major physiological types of antennal lobe neurons were established in the two populations according to their responses to different stimuli. One type responded broadly to almost all the stimuli tested. The second type responded selectively to some of the single components and blends. The third type did not respond to any single components but did respond to certain blends. Furthermore, some neurons of the second and third type recognized strain specific differences in ratios between pheromone components. Both projection neurons and local interneurons were found among these three types. Two pheromone responding bilateral projection neurons are reported for the first time in this paper.</p>},
  author       = {Wu, Wenqi and Anton, Sylvia and Löfstedt, Christer and Hansson, Bill S.},
  issn         = {0027-8424},
  language     = {eng},
  month        = {07},
  number       = {15},
  pages        = {8022--8027},
  publisher    = {National Acad Sciences},
  series       = {Proceedings of the National Academy of Sciences of the United States of America},
  title        = {Discrimination among pheromone component blends by interneurons in male antennal lobes of two populations of the turnip moth, Agrotis segetum},
  url          = {http://dx.doi.org/10.1073/pnas.93.15.8022},
  doi          = {10.1073/pnas.93.15.8022},
  volume       = {93},
  year         = {1996},
}