Freezing Resistance in Some Antarctic Fishes

Measurements of serum freezing points in three Antarctic marine fishes indicated that they do not freeze in the -1.87°C seawater because their blood is isosmotic to seawater. Concentrations of sodium chloride, urea, and free amino acids in the serum accounted for only half of the freezing-point depr...

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Bibliographic Details
Published in:Science
Main Authors: DeVries, Arthur L., Wohlschlag, Donald E.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1969
Subjects:
Antarctic
Antarc*
Online Access:http://dx.doi.org/10.1126/science.163.3871.1073
https://www.science.org/doi/pdf/10.1126/science.163.3871.1073
Description
Summary:Measurements of serum freezing points in three Antarctic marine fishes indicated that they do not freeze in the -1.87°C seawater because their blood is isosmotic to seawater. Concentrations of sodium chloride, urea, and free amino acids in the serum accounted for only half of the freezing-point depression of the serum. A protein containing carbohydrate was isolated which accounted for 30 percent of the freezing-point depression of the serum.

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