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The Antennal Lobe of Orthoptera - Anatomy and Evolution

Ignell, Rickard LU ; Anton, Sylvia LU and Hansson, Bill S (2001) In Brain, Behavior and Evolution 57(1). p.1-17
Abstract
The first odor-processing neuropils of insects comprise glomeruli, islets of neuropil, that are supplied by olfactory receptor neurons and give rise to efferent axons to higher brain centers. Glomeruli size and organization varies in a taxon-specific manner across the Insecta, suggesting possible correlates between their organization and chemosensory behaviors in different insect groups. Comparative studies of antennal lobe glomeruli within the Orthoptera have been used to infer how the various taxon-specific arrangements of odorant-processing structures (glomeruli) might have evolved. The cellular arrangements in glomeruli have been surveyed using anterograde filling and Golgi impregnation of antennal receptor neurons projecting to the... (More)
The first odor-processing neuropils of insects comprise glomeruli, islets of neuropil, that are supplied by olfactory receptor neurons and give rise to efferent axons to higher brain centers. Glomeruli size and organization varies in a taxon-specific manner across the Insecta, suggesting possible correlates between their organization and chemosensory behaviors in different insect groups. Comparative studies of antennal lobe glomeruli within the Orthoptera have been used to infer how the various taxon-specific arrangements of odorant-processing structures (glomeruli) might have evolved. The cellular arrangements in glomeruli have been surveyed using anterograde filling and Golgi impregnation of antennal receptor neurons projecting to the antennal lobe in Stenopelmatidae, Tettigoniidae, Gryllidae, Tetrigidae and Acrididae. These taxa, which represent the two sub-orders of Orthoptera, reveal a high correlation between the neural architecture of the glomeruli and structures within the glomeruli. Using a recent molecular phylogeny of the Orthoptera we have mapped the occurrence of glomerular characteristics to infer the evolution of antennal lobe structures in orthopterans. The functional implications of these results are discussed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Brain, Behavior and Evolution
volume
57
issue
1
pages
1 - 17
publisher
Karger
external identifiers
  • scopus:0035019869
ISSN
0006-8977
DOI
10.1159/000047222
language
English
LU publication?
yes
id
471d9185-b517-4274-bbf4-9f12b3273e09 (old id 149687)
date added to LUP
2007-06-27 09:50:20
date last changed
2018-05-29 10:05:07
@article{471d9185-b517-4274-bbf4-9f12b3273e09,
  abstract     = {The first odor-processing neuropils of insects comprise glomeruli, islets of neuropil, that are supplied by olfactory receptor neurons and give rise to efferent axons to higher brain centers. Glomeruli size and organization varies in a taxon-specific manner across the Insecta, suggesting possible correlates between their organization and chemosensory behaviors in different insect groups. Comparative studies of antennal lobe glomeruli within the Orthoptera have been used to infer how the various taxon-specific arrangements of odorant-processing structures (glomeruli) might have evolved. The cellular arrangements in glomeruli have been surveyed using anterograde filling and Golgi impregnation of antennal receptor neurons projecting to the antennal lobe in Stenopelmatidae, Tettigoniidae, Gryllidae, Tetrigidae and Acrididae. These taxa, which represent the two sub-orders of Orthoptera, reveal a high correlation between the neural architecture of the glomeruli and structures within the glomeruli. Using a recent molecular phylogeny of the Orthoptera we have mapped the occurrence of glomerular characteristics to infer the evolution of antennal lobe structures in orthopterans. The functional implications of these results are discussed.},
  author       = {Ignell, Rickard and Anton, Sylvia and Hansson, Bill S},
  issn         = {0006-8977},
  language     = {eng},
  number       = {1},
  pages        = {1--17},
  publisher    = {Karger},
  series       = {Brain, Behavior and Evolution},
  title        = {The Antennal Lobe of Orthoptera - Anatomy and Evolution},
  url          = {http://dx.doi.org/10.1159/000047222},
  volume       = {57},
  year         = {2001},
}