caa a22 4500 465826318 CHVBK 20180323112150.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF00691710 doi (NATIONALLICENCE)springer-10.1007/BF00691710 Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia [Elektronische Daten] [Ole Brix, Astrid Bårdgard, Svein Mathisen, Nicholas Tyler, Matti Nuutinen, Sarveriò Condo, Bruno Giardina] Summary: The 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. Springer-Verlag, 1990 Arctic adaptation nationallicence Hemoglobin nationallicence Oxygen-binding nationallicence Musk-ox nationallicence Reindeer nationallicence Brix Ole Zoological Laboratory, University of Bergen, Allegaten 41, N-5007, Bergen, Norway aut Bårdgard Astrid Zoological Laboratory, University of Bergen, Allegaten 41, N-5007, Bergen, Norway aut Mathisen Svein Institute of Arctic Biology, University of Tromsø, N-9000, Tromsø, Norway aut Tyler Nicholas Institute of Arctic Biology, University of Tromsø, N-9000, Tromsø, Norway aut Nuutinen Matti Department of Pediatrics, University of Oulu, SF-90220, Oulu 22, Finland aut Condo Sarveriò Department of Experimental Medicine and Biochemical Sciences, II University of Rome, Tor Vergata, Via Orazio Raimondo, 00173, Rome, Italy aut Giardina Bruno Department of Experimental Medicine and Biochemical Sciences, II University of Rome, Tor Vergata, Via Orazio Raimondo, 00173, Rome, Italy aut Journal of Comparative Physiology B Springer-Verlag 159/6(1990-11-01), 655-660 0174-1578 159:6<655 1990 159 360 https://doi.org/10.1007/BF00691710 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00691710 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brix Ole Zoological Laboratory, University of Bergen, Allegaten 41, N-5007, Bergen, Norway aut NATIONALLICENCE 700 1- Bårdgard Astrid Zoological Laboratory, University of Bergen, Allegaten 41, N-5007, Bergen, Norway aut NATIONALLICENCE 700 1- Mathisen Svein Institute of Arctic Biology, University of Tromsø, N-9000, Tromsø, Norway aut NATIONALLICENCE 700 1- Tyler Nicholas Institute of Arctic Biology, University of Tromsø, N-9000, Tromsø, Norway aut NATIONALLICENCE 700 1- Nuutinen Matti Department of Pediatrics, University of Oulu, SF-90220, Oulu 22, Finland aut NATIONALLICENCE 700 1- Condo Sarveriò Department of Experimental Medicine and Biochemical Sciences, II University of Rome, Tor Vergata, Via Orazio Raimondo, 00173, Rome, Italy aut NATIONALLICENCE 700 1- Giardina Bruno Department of Experimental Medicine and Biochemical Sciences, II University of Rome, Tor Vergata, Via Orazio Raimondo, 00173, Rome, Italy aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer-Verlag 159/6(1990-11-01), 655-660 0174-1578 159:6<655 1990 159 360 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer