Abstract
Mangum and Schopf1 claim on the basis of their calculations that the diffusion of oxygen into the body of an ectoproct is insufficient to supply the animal with its respiratory needs. They conclude that the periodic contraction of an ectoproct circulates its coelomic fluid. I believe their calculations are incorrect and that diffusion of oxygen into the ectoprocts is sufficient to supply their needs.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Mangum, C. P., and Schopf, T. J. M., Nature, 213, 264 (1967).
Gerard, R. W., Amer. J. Physiol., 132, 381 (1927).
Fenn, W. O., J. Gen. Physiol., 10, 767 (1927).
Krogh, A., J. Physiol., 52, 391 (1919).
Harvey, E. N., J. Gen. Physiol., 11, 469 (1928).
Krogh, A., in Comparative Physiology of Respiratory Mechanisms, 172 (V. Penn. Press, 1941).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
TEAL, J. Is an Ectoproct Possible?. Nature 216, 1239–1240 (1967). https://doi.org/10.1038/2161239a0
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1038/2161239a0
- Springer Nature Limited