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Journal of Experimental Biology 39,373-386 (1962)
Published by Company of Biologists 1962

Viso-Elastic Properties of the Body-Wall of Sea Anemones

R. MCN. ALEXANDER ¹

¹ Department of Zoology, University College of North Wales Bangor

1. Creep of narcotized Metridium and Calliactis body-wall at constant tensile stress has been studied quantitatively.

2. It was found to be reversible, and seemed to be controlled by the mesogloea. Its course could be represented by equations of the form (t)= _o+(I-e^-t/), where the retardation time was about 1 hr. for Metridium and many hours for Calliactis.

3. The results can most simply be explained in terms of a cross-linked and a noncross-linked polymeric system, acting in parallel. An explanation in terms of a lattice of inextensible fibres is not satisfactory.

4. The results are discussed in relation to the behaviour of the animals.

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