Cibarial stretch receptors in the tsetse fly (Glossina austeni) and the blowfly (Calliphora erythrocephala) |
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| Authors: | M J Rice |
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| Affiliation: | 1. School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom;2. Centre for Philosophy of Natural and Social Science, London School of Economics and Political Science, London, United Kingdom;3. Department of Biology, California State University Dominguez Hills, Carson, CA, United States;4. Faculty of Agricultural Science and Engineering, University of Tehran, Tehran, Iran |
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| Abstract: | On each side of the anterior wall of the cibarial pump of the tsetse fly and the blowfly there are three multiterminal neurones: CPR 1, CPR 2, and CPR 3. The numerous, symmetrically arranged dendrites of these neurones are desheathed at their tips, which are surrounded by connective tissue and set in grooves in the anterior wall epithelium. Simulated cibarial pumping evokes bursts of action potentials, the discharge frequency of each neurone being proportional to the extent of indentation of the anterior wall and to the point of stimulation. Stimulation of different areas of the anterior wall provokes different patterns of firing.The cibarial pump receptors can be compared to the vertebrate Golgi tendon organs, and they precisely monitor (and perhaps control) the rate and type of cibarial pumping. The CPR's offer a simple preparation, suitable for the study of multiterminal neurones and the control of cibarial pumping in insects. |
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