ABSTRACT
The total body sodium increases from 45·9 μM/g. fish in fresh water to 59·9 μM/g. fish in 200 % sea water.
The rate of exchange of sodium increases from 2 μM/g./hr. in fresh water to 60 μM/g./hr. in 100% sea water.
The rate of drinking increases from o·26%/hr. fresh water to 1·6%/hr. in 400% sea water. Even in 200% sea water drinking accounts for only a quarter of the total sodium influx.
The permeability to water, as measured by tritiated water, is highest in fresh water and lowest in 200% sea water. The permeabilities to water measured in this way are consistent with the drinking rates determined in sea water and 200% sea water.
Copyright © 1967 The Company of Biologists Ltd.
1967
You do not currently have access to this content.