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Aglomerular hemipteran antennal lobes – Basic neuroanatomy of a small nose

Kristoffersen, Lina LU ; Hansson, Bill S; Anderbrant, Olle LU and Larsson, Mattias C (2008) In Chemical Senses 33. p.771-778
Abstract
We have compared the basic organization of the primary olfactory centre, the antennal lobe (AL), in 4 hemipteran species representing the 2 major lineages in this order. The Homoptera were represented by the psyllid Trioza apicalis and its aphid relatives the grain aphid Sitobion avenae Fabricius and the rose-grain aphid Metopolophium dirhodum Walker, whereas the Heteroptera were represented by the pentatomid stink bug Euschistus heros Fabricius. The olfactory systems of psyllids and aphids are generally very small, with low numbers of afferents in comparison to other insect groups, and the smallest described so far belongs to T. apicalis, comprising less than 50 olfactory receptor neurons (ORNs). Originally, we tried to estimate numbers... (More)
We have compared the basic organization of the primary olfactory centre, the antennal lobe (AL), in 4 hemipteran species representing the 2 major lineages in this order. The Homoptera were represented by the psyllid Trioza apicalis and its aphid relatives the grain aphid Sitobion avenae Fabricius and the rose-grain aphid Metopolophium dirhodum Walker, whereas the Heteroptera were represented by the pentatomid stink bug Euschistus heros Fabricius. The olfactory systems of psyllids and aphids are generally very small, with low numbers of afferents in comparison to other insect groups, and the smallest described so far belongs to T. apicalis, comprising less than 50 olfactory receptor neurons (ORNs). Originally, we tried to estimate numbers of olfactory glomeruli in the AL of T. apicalis, which in insects generally correspond closely to the number of different types of ORNs. Neither immunocytochemical staining nor anterograde staining of ORNs revealed any glomerular structures in the ALs of T. apicalis or the 2 aphids that were included for comparison. In contrast, the ALs of the pentatomid stink bug E. heros displayed numerous distinct and well-delineated glomeruli, showing that aglomerular ALs are not typical of all insects within the order Hemiptera. Glomeruli are hallmark features of olfactory lobes in many different phyla, and the absence of glomerular structures in psyllids and aphids appears to be unique in insects that depend on olfactory orientation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Heteroptera, antennal lobe, Trioza apicalis, aphid, glomeruli, Homoptera
in
Chemical Senses
volume
33
pages
771 - 778
publisher
Oxford University Press
external identifiers
  • wos:000260978600002
  • scopus:56349156589
ISSN
1464-3553
DOI
10.1093/chemse/bjn044
project
Chemical ecology of psyllids
language
English
LU publication?
yes
id
3f5c1286-c4cb-42c5-b2d2-ad129ed958ef (old id 1180847)
date added to LUP
2008-10-22 14:45:11
date last changed
2017-10-01 03:44:55
@article{3f5c1286-c4cb-42c5-b2d2-ad129ed958ef,
  abstract     = {We have compared the basic organization of the primary olfactory centre, the antennal lobe (AL), in 4 hemipteran species representing the 2 major lineages in this order. The Homoptera were represented by the psyllid Trioza apicalis and its aphid relatives the grain aphid Sitobion avenae Fabricius and the rose-grain aphid Metopolophium dirhodum Walker, whereas the Heteroptera were represented by the pentatomid stink bug Euschistus heros Fabricius. The olfactory systems of psyllids and aphids are generally very small, with low numbers of afferents in comparison to other insect groups, and the smallest described so far belongs to T. apicalis, comprising less than 50 olfactory receptor neurons (ORNs). Originally, we tried to estimate numbers of olfactory glomeruli in the AL of T. apicalis, which in insects generally correspond closely to the number of different types of ORNs. Neither immunocytochemical staining nor anterograde staining of ORNs revealed any glomerular structures in the ALs of T. apicalis or the 2 aphids that were included for comparison. In contrast, the ALs of the pentatomid stink bug E. heros displayed numerous distinct and well-delineated glomeruli, showing that aglomerular ALs are not typical of all insects within the order Hemiptera. Glomeruli are hallmark features of olfactory lobes in many different phyla, and the absence of glomerular structures in psyllids and aphids appears to be unique in insects that depend on olfactory orientation.},
  author       = {Kristoffersen, Lina and Hansson, Bill S and Anderbrant, Olle and Larsson, Mattias C},
  issn         = {1464-3553},
  keyword      = {Heteroptera,antennal lobe,Trioza apicalis,aphid,glomeruli,Homoptera},
  language     = {eng},
  pages        = {771--778},
  publisher    = {Oxford University Press},
  series       = {Chemical Senses},
  title        = {Aglomerular hemipteran antennal lobes – Basic neuroanatomy of a small nose},
  url          = {http://dx.doi.org/10.1093/chemse/bjn044},
  volume       = {33},
  year         = {2008},
}