Is an Ectoproct Possible?

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.

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References

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TEAL, J. Is an Ectoproct Possible?. Nature 216, 1239–1240 (1967). https://doi.org/10.1038/2161239a0

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