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The Behaviour of Arenicola Marina L. in Sand, and the Role of Spontaneous Activity Cycles

Published online by Cambridge University Press:  11 May 2009

G. P. Wells
G. P. Wells
Affiliation:
Department of Zoology, University College, London
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Extract

Worms were allowed to burrow in sand in the laboratory. The general form of their burrows resembled that found in the field. Their behaviour was studied by continuously recording the water movements through the burrows for periods up to 3 weeks.

Whenever the worms were feeding from a gradually subsiding cone and piling up castings, as they do in the field, a characteristic cyclical pattern was traced. This was marked by conspicuous diphasic excursions at intervals of about 40 min. Defaecation occurs at the summit of the first phase. By comparison with records got from worms in glass tubes (Wells, 1949), it is inferred that the first phase consists of tailward locomotion to the sand surface, and the second to headward irrigation accompanied by gentle creeping back to the feeding point. The whole cycle is identical with the intermittent irrigation cycle shown in glass tubes.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 28 , Issue 2 , October 1949 , pp. 465 - 478
Copyright
Copyright © Marine Biological Association of the United Kingdom 1949

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References

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