Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect

Marcus Sjöholm, Irina Sinakevitch, Rickard Ignell, Nicholas J. Strausfeld, Bill S. Hansson

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The mushroom bodies are paired structures in the insect brain involved in complex functions such as memory formation, sensory integration, and context recognition. In many insects these centers are elaborate, sometimes comprising several hundred thousand neurons. The present account describes the mushroom bodies of Spodoptera littoralis, a moth extensively used for studies of olfactory processing and conditioning. The mushroom bodies of Spodoptera consist of only about 4,000 large-diameter Kenyon cells. However, these neurons are recognizably similar to morphological classes of Kenyon cells identified in honey bees, Drosophila, and cockroaches. The spodopteran mushroom body is equipped with three major divisions of its vertical and medial lobe, one of which, the gamma lobe, is supplied by clawed class II Kenyon cells as in other described taxa. Of special interest is the presence of a discrete tract (the Y tract) of axons leading from the calyx, separate from the pedunculus, that innervates lobelets above and beneath the medial lobe, close to the latter's origin from the pedunculus. This tract is comparable to tracts and resultant lobelets identified in cockroaches and termites. The article discusses possible functional roles of the spodopteran mushroom body against the background of olfactory behaviors described from this taxon and discusses the possible functional relevance of mushroom body structure, emphasizing similarities and dissimilarities with mushroom bodies of other species, in particular the fruit fly, Drosophila melanogaster.

Original languageEnglish (US)
Pages (from-to)290-304
Number of pages15
JournalJournal of Comparative Neurology
Volume491
Issue number3
DOIs
StatePublished - Oct 24 2005

Fingerprint

Mushroom Bodies
Insects
Spodoptera
Cockroaches
Isoptera
Neurons
Honey
Moths
Bees
Drosophila melanogaster
Diptera
Drosophila
Axons
Fruit
Brain

Keywords

  • Brain
  • Evolution
  • Insect
  • Learning and memory
  • Neuroanatomy

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Sjöholm, M., Sinakevitch, I., Ignell, R., Strausfeld, N. J., & Hansson, B. S. (2005). Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect. Journal of Comparative Neurology, 491(3), 290-304. https://doi.org/10.1002/cne.20698

Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect. / Sjöholm, Marcus; Sinakevitch, Irina; Ignell, Rickard; Strausfeld, Nicholas J.; Hansson, Bill S.

In: Journal of Comparative Neurology, Vol. 491, No. 3, 24.10.2005, p. 290-304.

Research output: Contribution to journalArticle

Sjöholm, M, Sinakevitch, I, Ignell, R, Strausfeld, NJ & Hansson, BS 2005, 'Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect', Journal of Comparative Neurology, vol. 491, no. 3, pp. 290-304. https://doi.org/10.1002/cne.20698
Sjöholm, Marcus ; Sinakevitch, Irina ; Ignell, Rickard ; Strausfeld, Nicholas J. ; Hansson, Bill S. / Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect. In: Journal of Comparative Neurology. 2005 ; Vol. 491, No. 3. pp. 290-304.
@article{65260016a5c24d43a76683703b864b06,
title = "Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect",
abstract = "The mushroom bodies are paired structures in the insect brain involved in complex functions such as memory formation, sensory integration, and context recognition. In many insects these centers are elaborate, sometimes comprising several hundred thousand neurons. The present account describes the mushroom bodies of Spodoptera littoralis, a moth extensively used for studies of olfactory processing and conditioning. The mushroom bodies of Spodoptera consist of only about 4,000 large-diameter Kenyon cells. However, these neurons are recognizably similar to morphological classes of Kenyon cells identified in honey bees, Drosophila, and cockroaches. The spodopteran mushroom body is equipped with three major divisions of its vertical and medial lobe, one of which, the gamma lobe, is supplied by clawed class II Kenyon cells as in other described taxa. Of special interest is the presence of a discrete tract (the Y tract) of axons leading from the calyx, separate from the pedunculus, that innervates lobelets above and beneath the medial lobe, close to the latter's origin from the pedunculus. This tract is comparable to tracts and resultant lobelets identified in cockroaches and termites. The article discusses possible functional roles of the spodopteran mushroom body against the background of olfactory behaviors described from this taxon and discusses the possible functional relevance of mushroom body structure, emphasizing similarities and dissimilarities with mushroom bodies of other species, in particular the fruit fly, Drosophila melanogaster.",
keywords = "Brain, Evolution, Insect, Learning and memory, Neuroanatomy",
author = "Marcus Sj{\"o}holm and Irina Sinakevitch and Rickard Ignell and Strausfeld, {Nicholas J.} and Hansson, {Bill S.}",
year = "2005",
month = "10",
day = "24",
doi = "10.1002/cne.20698",
language = "English (US)",
volume = "491",
pages = "290--304",
journal = "Journal of Comparative Neurology",
issn = "0021-9967",
publisher = "Wiley-Liss Inc.",
number = "3",

}

TY - JOUR

T1 - Organization of Kenyon cells in subdivisions of the mushroom bodies of a lepidopteran insect

AU - Sjöholm, Marcus

AU - Sinakevitch, Irina

AU - Ignell, Rickard

AU - Strausfeld, Nicholas J.

AU - Hansson, Bill S.

PY - 2005/10/24

Y1 - 2005/10/24

N2 - The mushroom bodies are paired structures in the insect brain involved in complex functions such as memory formation, sensory integration, and context recognition. In many insects these centers are elaborate, sometimes comprising several hundred thousand neurons. The present account describes the mushroom bodies of Spodoptera littoralis, a moth extensively used for studies of olfactory processing and conditioning. The mushroom bodies of Spodoptera consist of only about 4,000 large-diameter Kenyon cells. However, these neurons are recognizably similar to morphological classes of Kenyon cells identified in honey bees, Drosophila, and cockroaches. The spodopteran mushroom body is equipped with three major divisions of its vertical and medial lobe, one of which, the gamma lobe, is supplied by clawed class II Kenyon cells as in other described taxa. Of special interest is the presence of a discrete tract (the Y tract) of axons leading from the calyx, separate from the pedunculus, that innervates lobelets above and beneath the medial lobe, close to the latter's origin from the pedunculus. This tract is comparable to tracts and resultant lobelets identified in cockroaches and termites. The article discusses possible functional roles of the spodopteran mushroom body against the background of olfactory behaviors described from this taxon and discusses the possible functional relevance of mushroom body structure, emphasizing similarities and dissimilarities with mushroom bodies of other species, in particular the fruit fly, Drosophila melanogaster.

AB - The mushroom bodies are paired structures in the insect brain involved in complex functions such as memory formation, sensory integration, and context recognition. In many insects these centers are elaborate, sometimes comprising several hundred thousand neurons. The present account describes the mushroom bodies of Spodoptera littoralis, a moth extensively used for studies of olfactory processing and conditioning. The mushroom bodies of Spodoptera consist of only about 4,000 large-diameter Kenyon cells. However, these neurons are recognizably similar to morphological classes of Kenyon cells identified in honey bees, Drosophila, and cockroaches. The spodopteran mushroom body is equipped with three major divisions of its vertical and medial lobe, one of which, the gamma lobe, is supplied by clawed class II Kenyon cells as in other described taxa. Of special interest is the presence of a discrete tract (the Y tract) of axons leading from the calyx, separate from the pedunculus, that innervates lobelets above and beneath the medial lobe, close to the latter's origin from the pedunculus. This tract is comparable to tracts and resultant lobelets identified in cockroaches and termites. The article discusses possible functional roles of the spodopteran mushroom body against the background of olfactory behaviors described from this taxon and discusses the possible functional relevance of mushroom body structure, emphasizing similarities and dissimilarities with mushroom bodies of other species, in particular the fruit fly, Drosophila melanogaster.

KW - Brain

KW - Evolution

KW - Insect

KW - Learning and memory

KW - Neuroanatomy

UR - http://www.scopus.com/inward/record.url?scp=24944578267&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24944578267&partnerID=8YFLogxK

U2 - 10.1002/cne.20698

DO - 10.1002/cne.20698

M3 - Article

C2 - 16134139

AN - SCOPUS:24944578267

VL - 491

SP - 290

EP - 304

JO - Journal of Comparative Neurology

JF - Journal of Comparative Neurology

SN - 0021-9967

IS - 3

ER -