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Science 14 April 1967:
Vol. 156. no. 3772, pp. 257 - 258
DOI: 10.1126/science.156.3772.257
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Articles

Temperature Tolerance of Some Antarctic Fishes

George N. Somero 1 and Arthur L. DeVries 1

1 Department of Biological Sciences, Stanford University, Stanford, California 94305

Three species of Antarctic fishes which live in constantly near-freezing waters have a markedly low upper-lethal temperature of 6° C ; this is the lowest upper-lethal temperature reported for any organism. The fishes survive supercooling to —2.5°C. Data on brain metabolism in vitro support the hypothesis that the central nervous system is a primary site of thermal injury.


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