Abstract
ONE of the clearest cases of the nervous control of cilia was provided by Fedele's1 work upon the cilia of the gill bars of the pelagic tunicate Doliolum; in the sessile tunicates also it seems that the gill bar cilia may be inhibited by the peripheral nervous system, for they may be observed to beat intermittently in the intact annual, and D. B. Carlisle (personal communication) has found that several species of sessile ascidian occasionally show both branchial apertures open with no water current passing through the atrium, that is, the gill bar cilia are presumably at rest. Knight-Jones2 has shown that in the Enteropneusta the gut cilia exhibit bursts of activity alternating with periods of rest; in this group, the gill bar cilia also appear to be under the control of the nervous system.
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References
Fedele, M., Pubbl. Staz. Zool. Napoli, 4 (1923).
Knight-Jones, E. W., Proc. Zool. Soc. Lond., 123, 637 (1952).
Knight-Jones, E. W., and Millar, R. H., Nature, 163, 137 (1949).
Rice, H. J., Amer. Nat., 14, 1, 73 (1880).
Dogiel, A. S., Anat. Hefte, 21, 145 (1902).
Kutchin, H. L., Proc. Amer. Acad. Sci. Art., 49, 571 (1913).
Bone, Q., Quart. J. Micro. Sci. (submitted for publication).
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BONE, Q. Nervous Control of Cilia in Amphioxus (Branchiostoma). Nature 181, 193–194 (1958). https://doi.org/10.1038/181193a0
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DOI: https://doi.org/10.1038/181193a0
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