Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures
Viscosity of whole blood and plasma from Antarctic fishes were compared over a temperature range of −1.5 to 5°C; human samples and water provided reference values. Blood viscosity of nototheniids was greater than that of the haemoglobinless icefish, reflecting differences in packed cell volume, bein...
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crwiley:10.1111/j.1095-8649.1996.tb01444.x 2024-06-02T07:58:15+00:00 Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures Egginton, S. 1996 http://dx.doi.org/10.1111/j.1095-8649.1996.tb01444.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1996.tb01444.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1996.tb01444.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 48, issue 3, page 513-521 ISSN 0022-1112 1095-8649 journal-article 1996 crwiley https://doi.org/10.1111/j.1095-8649.1996.tb01444.x 2024-05-03T11:16:19Z Viscosity of whole blood and plasma from Antarctic fishes were compared over a temperature range of −1.5 to 5°C; human samples and water provided reference values. Blood viscosity of nototheniids was greater than that of the haemoglobinless icefish, reflecting differences in packed cell volume, being 5.27 v. 3.27 cP at 0°C for Notothenia coriiceps and Chaenocephalus aceratus , respectively. The reduction in MCHC, rather than haematocrit, in nototheniids suggests that selection pressure has not acted at the level of oxygen transport. However, icefish plasma viscosity was similar to human, but greater than that of Notothenia spp., suggesting that viscometric influences on cardiac afterload may be adaptive for the latter. Indeed, handling stress induced a significant increase in viscosity of both whole blood and plasma which may impair cardiovascular performance. Such a response was not observed in icefish, and in view of the large blood vessels it is unlikely that viscosity plays any significant role in limiting activity of this species. Article in Journal/Newspaper Antarc* Antarctic Icefish Wiley Online Library Antarctic Journal of Fish Biology 48 3 513 521 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Viscosity of whole blood and plasma from Antarctic fishes were compared over a temperature range of −1.5 to 5°C; human samples and water provided reference values. Blood viscosity of nototheniids was greater than that of the haemoglobinless icefish, reflecting differences in packed cell volume, being 5.27 v. 3.27 cP at 0°C for Notothenia coriiceps and Chaenocephalus aceratus , respectively. The reduction in MCHC, rather than haematocrit, in nototheniids suggests that selection pressure has not acted at the level of oxygen transport. However, icefish plasma viscosity was similar to human, but greater than that of Notothenia spp., suggesting that viscometric influences on cardiac afterload may be adaptive for the latter. Indeed, handling stress induced a significant increase in viscosity of both whole blood and plasma which may impair cardiovascular performance. Such a response was not observed in icefish, and in view of the large blood vessels it is unlikely that viscosity plays any significant role in limiting activity of this species. |
format |
Article in Journal/Newspaper |
author |
Egginton, S. |
spellingShingle |
Egginton, S. Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures |
author_facet |
Egginton, S. |
author_sort |
Egginton, S. |
title |
Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures |
title_short |
Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures |
title_full |
Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures |
title_fullStr |
Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures |
title_full_unstemmed |
Blood rheology of Antarctic fishes: viscosity adaptations at very low temperatures |
title_sort |
blood rheology of antarctic fishes: viscosity adaptations at very low temperatures |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1996.tb01444.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1996.tb01444.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1996.tb01444.x |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Icefish |
genre_facet |
Antarc* Antarctic Icefish |
op_source |
Journal of Fish Biology volume 48, issue 3, page 513-521 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1996.tb01444.x |
container_title |
Journal of Fish Biology |
container_volume |
48 |
container_issue |
3 |
container_start_page |
513 |
op_container_end_page |
521 |
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1800741536637386752 |