PMID: 24868Dec 1, 1977Paper

A comparative study of the respiratory properties of bird blood

Respiration Physiology
F H Baumann, R Baumann

Abstract

Oxygen affinity and Bohr effect have been measured in the blood of four bird species (chicken, pigeon, Japanese quail and sparrow). Under physiological conditions (41 C, pH 7.5, PCO2 approximately 35 Torr) the oxygen half saturation pressure P50 are 50 Torr for the chickens, 38 Torr for the pigeon, 43 Torr for the Japanese quail and 44 Torr for the sparrow. Values for the physiological Bohr factors deltalogP50/deltapH are similar to those obtained in mammalian blood ranging from -0.57 in chicken blood to -0.42 for pigeon blood. A direct effect of CO2 on the oxygen affinity of chicken blood could not be observed, in agreement with results in hemoglobin solutions. However, at a constant pHpl of 7.5 the intracellular pH rise from 7.22 at 39 Torr PCO2 to 7.32 at PCO2 less than 1 Torr. This leads to a decrease of P50 at pHpl 7.5 from 52 to 46 Torr. A convincing correlation between body weight and P50 could not be established, even when including data from other authors. It is concluded that aside from metabolic rate, behavioural as well as environmental factors have influenced whole blood oxygen affinity during evolution.

References

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Citations

Nov 14, 1978·Pflügers Archiv : European journal of physiology·J P WeingartenP Scheid
Sep 29, 1978·Pflügers Archiv : European journal of physiology·M MeyerP Scheid
Apr 1, 1982·Respiration Physiology·P L Lutz, G N Lapennas
Apr 1, 1983·Respiration Physiology·G N Lapennas, R B Reeves
Jan 1, 1985·Respiration Physiology·L A Maginniss
May 1, 1989·Respiration Physiology·L A Maginniss, D L Kilgore
Apr 1, 1988·Biological Chemistry Hoppe-Seyler·R E WeberG Braunitzer
Mar 8, 2011·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Hiroshi TazawaWarren W Burggren
Aug 4, 2004·Respiratory Physiology & Neurobiology·F León-Velarde, C Monge-C
Dec 17, 2014·Molecular Biology and Evolution·Juan C OpazoJay F Storz
Oct 25, 2016·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Jessica ZuckKaren L Sweazea
Oct 26, 1999·The Diabetes Educator·J S CarterS S Gilliland
Mar 23, 2021·Proceedings of the National Academy of Sciences of the United States of America·Anthony V SignoreJay F Storz
Mar 9, 2013·The Journal of Experimental Biology·Jessica U Meir, William K Milsom

Related Concepts

Aves
Carbon Dioxide
Japanese Quail
Hematocrit Procedure
Hydrogen-Ion Concentration
Dioxygen
Oxyhemoglobin
Columba livia
Quail

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