The function of hemocyanin in respiration of the blue crab Callinectes sapidus

The Journal of Experimental Zoology
C P Mangum, A L Weiland


Blood PO2 in the blue crab Callinectes sapidus, a very active species of tropical origin, is lower at 22 degrees C than that of larger crabs in colder waters. These low oxygen levels permit its hemocyanin to be highly oxygenated at the gill, and to deliver almost half of its oxygen to the tissues in resting animals. Sustained muscular activity results in conspicuous decreases in blood PO2, pH and hemocyanin oxygenation. Although the venous reserve is fully utilized, hemocyanin oxygenation at the gill decreases so much that there is no change in its total quantitative function. The large Bohr shift becomes functional during activity, but its quantitative importance is not clear.


Sep 1, 1975·The Journal of Experimental Zoology·A L Weiland, C P Mangum
Feb 1, 1975·The Journal of Experimental Zoology·C P MangumK Johansen
Jun 1, 1974·Proceedings of the National Academy of Sciences of the United States of America·B SullivanC Bonaventura
Dec 1, 1973·Respiration Physiology·J N Cameron, T A Mecklenburg
Sep 15, 1970·Comparative Biochemistry and Physiology·R J Hoffmann, C P Mangum
Oct 1, 1955·Journal of Cellular Physiology·J R Redmond


Jan 1, 1983·Progress in Biophysics and Molecular Biology·H D EllertonH A Robinson
Feb 1, 1982·Quarterly Reviews of Biophysics·K E Van Holde, K I Miller
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May 1, 1979·Respiration Physiology·C F HerreidG M Shah
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Apr 12, 2005·The FEBS Journal·Mariano BeltraminiHeinz Decker
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