Journal article
Cardiopulmonary responses of burrowing owls ( Athene cunicularia) to acute hypercapnia and hypoxia
Comparative biochemistry and physiology. A, Comparative physiology, Vol.108(4), pp.561-567
1994
DOI: 10.1016/0300-9629(94)90341-7
Abstract
While breathing air, burrowing owls had heart rates and blood gases similar to those of other birds, but had lower blood pressures and higher plasma bicarbonate concentrations. Heart rate, blood pressure, and bicarbonate levels of burrowing owls did not change significantly with inspired CO
2. However, owls inhaling gases with a P
ICO
2 > 20 Torr had significantly elevated PaCO
2 and PaO
2 and were acidotic. Plasma bicarbonate concentration of burrowing owls declined significantly at P, O
2 < 68 Torr, but heart rate was unaffected by hypoxia. PaO
2 and PaCO
2 declined during hypoxia and birds became alkalotic. The normal
in vivo buffer line of burrowing owls represents a buffering capacity (31.5 mMol/l/pH unit) exceeding that of most birds, except divers. The cardiopulmonary responses of burrowing owls to hypercapnia and hypoxia are like those of non-burrow dwellers.
Details
- Title: Subtitle
- Cardiopulmonary responses of burrowing owls ( Athene cunicularia) to acute hypercapnia and hypoxia
- Creators
- Delbert L. Kilgore - University of MontanaFrank M. Faraci - Kansas State UniversityDaniel K. Henwood - University of MontanaM.Roger Fedde - Kansas State University
- Resource Type
- Journal article
- Publication Details
- Comparative biochemistry and physiology. A, Comparative physiology, Vol.108(4), pp.561-567
- Publisher
- Elsevier B.V
- DOI
- 10.1016/0300-9629(94)90341-7
- ISSN
- 0300-9629
- Language
- English
- Date published
- 1994
- Academic Unit
- Cardiovascular Medicine; Neuroscience and Pharmacology; Internal Medicine
- Record Identifier
- 9984303740902771
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