Abstract
THE oxygen consumption of various kinds of poikilothermal marine animals in English waters is higher, at the temperatures at which they live, than that of northern and arctic species of the same genera at their lower sea temperatures, although the arctic animals seem to move about just as fast in their cold habitat as do the English forms in our own waters1. The same relation holds for ciliary movement on the gills of scallops: the cilia beat more rapidly in the English species. On the other hand, the respiratory movements of English Crustacea are no more rapid at, say, 15° than those of arctic species at 5°. The same rule applies also to the rates of heart-beat of most of the species studied. I have now measured the rate of cleavage of eggs, and find that this behaves like the respiratory movements and hearts, not like oxygen consumption and cilia.
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H. Munro Fox, NATURE, 137, 903 (May 30, 1936).
B. Ephrussi, C. R. Soc. Biol. Paris, 89, 928 (1923).
O. Koehler, Arch. Zellforsch., 8, 272 (1912).
S. Hörstadius, Biol. gen., 1, 522 (1925).
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Fox, H. Rates of Cleavage of Sea Urchin Eggs in Different Latitudes. Nature 138, 839 (1936). https://doi.org/10.1038/138839a0
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DOI: https://doi.org/10.1038/138839a0
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