Oxygen consumption in an antarctic hemoglobin-free fish, Pagetopsis macropterus, and in three species of Notothenia
| Autor: | Edvard A. Hemmingsen, E. L. Douglas, Gordon C. Grigg |
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| Rok vydání: | 1969 |
| Předmět: |
Pagetopsis macropterus
biology Partial Pressure Fishes chemistry.chemical_element biology.organism_classification Oxygen uptake Oxygen Oxygen tension Fishery Notothenia Hemoglobins Animal science Oxygen Consumption chemistry Hemoglobin.free Species Specificity General Earth and Planetary Sciences Fish Animals Hemoglobin General Environmental Science |
| Zdroj: | Comparative biochemistry and physiology. 29(1) |
| ISSN: | 0010-406X |
| Popis: | The rate of oxygen consumption was determined in an Antarctic hemoglobin-free fish, Pagetopsis macropterus, and in three species of Notothenia, all of which have hemoglobin. In P. macropterus, the consumption at 0 degrees C ranged from 0.012 to 0.022 ml O2/g per hr, one-half to one-quarter of that in other fishes. In all cases, the rate was little affected by the oxygen tension in the water when it was lowered from approximately 160 to 20 mm Hg for Notothenia, or to 30 mm Hg for P. macropterus. In spite of the lack of hemoglobin, P. macropterus appears to have an efficient and well-regulated system for oxygen uptake. |
| Databáze: | OpenAIRE |
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