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The effects of lowered salinity upon Branchiostoma lanceolatum from the English Channel

Published online by Cambridge University Press:  11 May 2009

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

Previous work has indicated that, although in possession of numerous supposedly osmoregulatory structures, Branchiostoma lanceolatum from the English Channel is unable to regulate its body weight in diluted sea water. In vitro measurements of the rate of flagella activity in those organs similarly indicates no increase under hypo-osmotic stress. There is however quite a sharp threshold around 18‰, below which flagella activity ceases quite abruptly. A similar situation obtains with the gill cilia although the animal can remain alive at these salinities for a period of several weeks.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 61 , Issue 3 , August 1981 , pp. 685 - 689
Copyright
Copyright © Marine Biological Association of the United Kingdom 1981

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