The morphology, physiology and function of suboesophageal neck motor neurons in the honeybee

Schroter, Ulrike, Wilson, Sophie L. J., Srinivasan, Mandyam V. and Ibbotson, Michael R. (2007) The morphology, physiology and function of suboesophageal neck motor neurons in the honeybee. Journal of Comparative Physiology A, 193 3: 289-304. doi:10.1007/s00359-006-0182-x


Author Schroter, Ulrike
Wilson, Sophie L. J.
Srinivasan, Mandyam V.
Ibbotson, Michael R.
Title The morphology, physiology and function of suboesophageal neck motor neurons in the honeybee
Journal name Journal of Comparative Physiology A   Check publisher's open access policy
ISSN 0340-7616
0340-7594
0302-9824
Publication date 2007-03
Sub-type Article (original research)
DOI 10.1007/s00359-006-0182-x
Volume 193
Issue 3
Start page 289
End page 304
Total pages 16
Place of publication Berlin ; New York
Publisher Springer-Verlag
Language eng
Subject 170112 Sensory Processes, Perception and Performance
Abstract We report some of the neural and muscular circuitry that allows honeybees to control head movements. We studied neck motor neurons with cell bodies in the suboesophageal ganglion, axons in the first cervical nerve (IK1) and terminals in neck muscles 44 and 51 (muscle classification: Snodgrass in Smithsonian Misc Coll 103:1–120, 1942). We show that muscle 44 actually comprises five separate bundles of muscle fibres (subunits), while muscle 51 is split into two subunits. Eight motor neurons innervate muscles 44 and 51. Two motor neurons have cell bodies in the ventral-median cell body group (one innervates a subunit in muscle 44, the other a subunit in muscle 51). One motor neuron has a ventrally located contralateral cell body (innervating a subunit in muscle 44) and five have laterally located ipsilateral cell bodies. Of the five lateral cells, one innervates a subunit in muscle 51, three selectively innervate subunits in muscle 44 and one co-innervates a subunit in muscle 44 with the contralateral cell. Extracellular recordings revealed three types of visually driven, direction-selective cell-types in each IK1 tuned for leftward, rightward and downward motion over the eyes. The spatiotemporal tuning of the units is similar to that of other visual interneurons in the bee brain.
Keyword Physiology, Comparative
Apis mellifera
Neck motor neuron
Direction selective
Rhodamine dextran
Three-dimensional reconstruction
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Queensland Brain Institute Publications
 
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Created: Mon, 02 Mar 2009, 14:11:12 EST by Ms Karen Naughton on behalf of Queensland Brain Institute