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Osmotic and hydrostatic permeability of the integument of the starfish Asterias rubens L.

Published online by Cambridge University Press:  11 May 2009

J. Binyon
J. Binyon
Affiliation:
Zoology Department, Royal Holloway College, University of London, Egham Hill, Surrey
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Extract

The hydrostatic permeability of the aboral integument of the starfish Asterias rubens L. was found to be 5·1 ± 2·1 × 10−6 cm3/cm2/s/cm H2O. A sudden increase in permeability around 5 cm water pressure was found to coincide with the bursting of the dermal branchiae.

The area of protracted dermal branchiae per cm2 of aboral integument has been estimated and, if only this region represents the permeable areas of the skin, the above figure may well rise to 1 × 10−5 cm3/cm2/s/cm H2O.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 60 , Issue 3 , August 1980 , pp. 627 - 630
Copyright
Copyright © Marine Biological Association of the United Kingdom 1980

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