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Cited by 950Neurobiology and Insect Physiology ResearchOlfactory and Sensory Function StudiesInsect Pheromone Research and Control

The organization of the chemosensory system in Drosophila melanogaster: a rewiew

Stocker, Reinhard F.·1994·Cell and Tissue Research
DOI 10.1007/bf00305372
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Abstract

This review surveys the organization of the olfactory and gustatory systems in the imago and in the larva of Drosophila melanogaster, both at the sensory and the central level. Olfactory epithelia of the adult are located primarily on the third antennal segment (funiculus) and on the maxillary palps. About 200 basiconic (BS), 150 trichoid (TS) and 60 coeloconic sensilla (CS) cover the surface of the funiculus, and an additional 60 BS are located on the maxillary palps. Males possess about 30% more TS but 20% fewer BS than females. All these sensilla are multineuronal; they may be purely olfactory or multimodal with an olfactory component. Antennal and maxillary afferents converge onto approximately 35 glomeruli within the antennal lobe. These projections obey precise rules: individual fibers are glomerulus-specific, and different types of sensilla are associated with particular subsets of glomeruli. Possible functions of antennal glomeruli are discussed. In contrast to olfactory sensilla, gustatory sensilla of the imago are located at many sites, including the labellum, the pharynx, the legs, the wing margin and the female genitalia. Each of these sensory sites has its own central target. Taste sensilla are usually composed of one mechano- and three chemosensory neurons. Individual chemosensory neurons within a sensillum respond to distinct subsets of molecules and project into different central target regions. The chemosensory system of the larva is much simpler and consists essentially of three major sensillar complexes on the cephalic lobe, the dorsal, terminal and ventral organs, and a series of pharyngeal sensilla.

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133 of 133 references verified0 citation errors · 0 not checkable

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  • GRNs respond to specific taste categories, such as appetitive sugar or aversive bitter compounds, resulting in acceptance or avoidance.

    “GRNs respond to specific taste categories, such as appetitive sugar or aversive bitter compounds, resulting in acceptance (that is, proboscis extension and feeding) or avoidance, respectively24,33,35,38.”

    From A Drosophila computational brain model reveals sensorimotor processing (2024) · cites this paper as [35]

  • Gustatory receptor neurons on the body surface of the fly respond directly to tastants and project to the suboesophageal zone.

    “Gustatory receptor neurons (GRNs) on the body surface of the fly, including the labellum (tip of the proboscis) or the legs, respond directly to tastants and project to the primary taste centre of the insect brain—the suboesophageal zone (SEZ)23,33–37.”

    From A Drosophila computational brain model reveals sensorimotor processing (2024) · cites this paper as [35]

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Authors
Stocker, R. F.
Affiliations
University of Fribourg (CH)
Corresponding author
Stocker, Reinhard F.
Venue
Cell and Tissue Research
Publisher
Springer Science and Business Media LLC
Published
1994-01
Volume
275
Issue
1
Pages
3-26
ISSN
  • 0302-766X (ISSN-L)
  • 1432-0878
DOI
10.1007/bf00305372
OpenAlex
W2041851452
Cited by
950
References
134
Citations by year
2026: 15 · 2025: 32 · 2024: 26 · 2023: 35 · 2022: 31 · 2021: 45 · 2020: 29 · 2019: 35 · 2018: 28 · 2017: 40 · 2016: 34 · 2015: 29 · 2014: 41 · 2013: 32 · 2012: 32
FWCI
6.86
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Cell and Tissue Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Sensory Systems › Olfactory and Sensory Function Studies
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect Pheromone Research and Control
Keywords
Drosophila melanogaster, chemosensory system, olfaction, taste perception, olfactory sensilla, gustatory sensilla, antennal lobe, glomeruli, sensilla basiconica, trichoid sensilla, sensilla coeloconica, maxillary palp, taste sensilla
MeSH terms
Animals, Chemoreceptor Cells, Drosophila melanogaster, Female, Larva, Male, Models, Biological, Sense Organs, Smell, Taste, Genes, Insect

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