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Position‐specific central projections of mechanosensory neurons on the haltere of the blow fly, Calliphora vicina

Chan, Wai Pang and Dickinson, Michael H. (1996) Position‐specific central projections of mechanosensory neurons on the haltere of the blow fly, Calliphora vicina. Journal of Comparative Neurology, 369 (3). pp. 405-418. ISSN 0021-9967. doi:10.1002/(SICI)1096-9861(19960603)369:3<405::AID-CNE6>3.0.CO;2-9.

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The halteres of Dipteran insects play an important role in flight control. They are complex mechanosensory devices equipped with approximately 400 campaniform sensilla, cuticular strain gauges, which are organized into five fields at the base of each haltere. Despite the important role of these mechanosensory structures in flight, the central organization of the sensory afferents originating from the different field campaniforms has not been determined. We show here that in the blow fly, Calliphora vicina, sensory afferents from the campaniform fields project to the thorax in a region‐specific manner. Afferents from different fields have different projection profiles and in addition, the projection pattern of afferents from different regions of the same field may show further variation. However, central target regions of these afferents are not exclusive to particular sensory fields because cells from different fields can possess similar projection profiles. Convergence of afferent projections is not limited to axons from the haltere fields, but is also observed between afferents originating from the haltere fields and those from serially homologous fields on the radial vein of the wing. Although we have not determined the specific cellular targets of the haltere sensory cells, the afferents of a dorsal field could make potential contact with at least one identified wing steering motoneuron that is known to be important in turning maneuvers. Our results, thus, provide the anatomical basis for studying how mechanosensory information encoded by the complex fields on the base of the haltere is mapped onto different functional regions within the CNS.

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URLURL TypeDescription<405::AID-CNE6>3.0.CO;2-9 DOIArticle
Dickinson, Michael H.0000-0002-8587-9936
Additional Information:© 1996 Wiley‐Liss, Inc. Manuscript accepted: 04 December 1995. This study is supported by the David and Lucille Packard Fellowship for Science and Engineering and by National Science Foundation Grant IBN-0208765 awarded to M.H.D.
Funding AgencyGrant Number
David and Lucile Packard FoundationUNSPECIFIED
Subject Keywords:campaniform, sensilla, sensory map, thoracic ganglion, flight
Issue or Number:3
Record Number:CaltechAUTHORS:20181116-093136312
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Official Citation:Chan, W. P. and Dickinson, M. H. (1996), Position‐specific central projections of mechanosensory neurons on the haltere of the blow fly, Calliphora vicina. J. Comp. Neurol., 369: 405-418. doi:10.1002/(SICI)1096-9861(19960603)369:3<405::AID-CNE6>3.0.CO;2-9
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90954
Deposited By: Tony Diaz
Deposited On:16 Nov 2018 19:26
Last Modified:16 Nov 2021 03:37

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