Grigg GC. 1967 Respiratory properties of the blood of four species of Antarctic fishes. Comp Biochem Physiol 23:139-48. SOME RESPIRATORY PROPERTIES OF THE BLOOD OF FOUR SPECIES OF ANTARCTIC FISHES
Abstract-1. Fishes in Antarctic seas live at a temperature lower than that at which most other poikilotherms remain active. 2. Hematocrit, absolute oxygen capacity and oxygen equilibrium curves were determined for whole blood from each of four related species of Antarctic fishes. These parameters we...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.545.5712 http://espace.library.uq.edu.au/eserv/UQ:9134/Respiratory_prop.pdf |
| Summary: | Abstract-1. Fishes in Antarctic seas live at a temperature lower than that at which most other poikilotherms remain active. 2. Hematocrit, absolute oxygen capacity and oxygen equilibrium curves were determined for whole blood from each of four related species of Antarctic fishes. These parameters were related to the habits and activity of each species. 3. Temperature increase was found to have a marked effect on the affinity of the blood for oxygen. This effect was compared with data from other fishes and found to be extreme in the Antarctic species. 4. These fishes are known to be stenothermal and geographically restricted in distribution. It seems likely that the sensitivity of their oxygen transport systems to temperature increase could provide at least some of the physiological basis for this. |
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