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Oxygen Transport In The Blood Of Arctic Mammals: Adaptation To Local Heterothermia

O. Brix, A. Bårdgard, S. Mathisen, N. Tyler, M. Nuutinen, S. Condó, B. Giardina
Published 2004 · Biology, Medicine

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SummaryThe oxygen binding of whole blood from humans and two arctic mammals, reindeer and muskox, has been studied as a function of carbon dioxide and temperature. All bloods display a marked Bohr effect with Bohr coefficients in the range −0.44–−0.73. The Bohr effect is more pronounced at 20°C. The temperature sensitivity of reindeer and muskox blood expressed by the apparent heat of oxygenation, δH, is almost three times lower than that of human HbA under the same experimental conditions. This thermodynamic difference gives special benefits to arctic mammals with large heterothermy by safeguarding oxygen unloading at very low ambient temperatures.
This paper references
Regulation of the oxygen affinity of haemoglobin from the reindeer (Rangifer tarandus tarandus L.).
L. Dalton (1988)
10.1016/S0022-2836(77)80029-6
The balance sheet of a hemoglobin. Thermodynamics of CO binding by hemoglobin trout I.
J. Wyman (1977)
10.1016/0300-9629(71)90264-7
Estimation of thyroxine secretion rate in reindeer, Rangifer tarandus: effects of sex, age and season.
M. K. Yousef (1971)
10.1079/BJN19730099
Seasonal variations in glucose metabolism of reindeer (Rangifer tarandus L.) estimated with (U- 14 C)glucose and (3- 3 H)glucose.
J. Luick (1973)
10.1016/0034-5687(80)90122-X
The effect of temperature on the oxygen equilibrium curve of human blood.
R. B. Reeves (1980)
The Pathway for Oxygen
M. Weibel (1984)
Arctic life adaptation : II . The function of muskox hemoglobin ( Ovibos moschatus )
S Mathisen
10.1016/0034-5687(72)90030-8
An imidazole alphastat hypothesis for vertebrate acid-base regulation: tissue carbon dioxide content and body temperature in bullfrogs.
R. B. Reeves (1972)
Cond6 SG, Giardina B (1989 a) Arctic life adaptation: II. The function of muskox hemoglobin (Ovibos moschatus)
O Brix (1989)
10.1016/0006-291X(77)91444-9
Reverse temperature dependence of tuna hemoglobin oxygenation.
F. Carey (1977)
10.1093/ICB/20.1.163
Adaptation of Red Blood Cell Function to Hypoxia and Temperature in Ectothermic Vertebrates
S. C. Wood (1980)
10.1016/0014-5793(89)81256-6
Arctic adaptation in reindeer The energy saving of a hemoglobin
B. Giardina (1989)
10.1139/Z70-164
Seasonal changes in the energy and nitrogen intake in reindeer and caribou.
E. H. McEwan (1970)
10.1016/0305-0491(89)90022-9
Arctic life adaptation--I. The function of reindeer hemoglobin.
B. Giardina (1989)
The blood circulation of reindeer
J Timisjirvi (1978)
10.1016/0300-9629(86)90592-X
The influence of ambient temperature on metabolism and body temperature of newborn and growing reindeer calves (Rangifer tarandus tarandus L.).
P. Soppela (1986)
10.1152/JAPPL.1967.23.3.410
Method for oxygen content and dissociation curves on microliter blood samples.
V. Tucker (1967)
10.1016/0076-6879(81)76133-0
Measurement of binding of gaseous and nongaseous ligands to hemoglobins by conventional spectrophotometric procedures.
B. Giardina (1981)
10.1016/0014-5793(89)81328-6
Endothermic oxygenation of hemocyanin in the krill Meganyctiphanes norvegica
O. Brix (1989)



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