Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour
The haeniatological and rheological characteristics of blood from seven marine mammal species have been examined to determine the relationship between increased haematocrit. which is correlated with the ability to increase aerobic dive limits. and blood viscosity. The species examined reflect adapta...
Published in: | Journal of Zoology |
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Language: | English |
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Wiley
1991
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Online Access: | http://dx.doi.org/10.1111/j.1469-7998.1991.tb03816.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1991.tb03816.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb03816.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb03816.x |
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crwiley:10.1111/j.1469-7998.1991.tb03816.x 2024-09-15T17:59:01+00:00 Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour Hedrick, Michael S. Duffield, Deborah A. 1991 http://dx.doi.org/10.1111/j.1469-7998.1991.tb03816.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1991.tb03816.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb03816.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb03816.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Zoology volume 225, issue 2, page 273-283 ISSN 0952-8369 1469-7998 journal-article 1991 crwiley https://doi.org/10.1111/j.1469-7998.1991.tb03816.x 2024-08-09T04:24:32Z The haeniatological and rheological characteristics of blood from seven marine mammal species have been examined to determine the relationship between increased haematocrit. which is correlated with the ability to increase aerobic dive limits. and blood viscosity. The species examined reflect adaptations to a variety of marine niches ranging from coastal to pelagic to iceedge environments. and exhibit a wide range of diving behaviours. Average haematocrits ranged from43–45% in bottlenose dolphins. killer whales and California sea lions to more than 60% in the deeper diving species (beluga whales and northern elephant seals). Whole blood viscosity () increased exponentially with haematocrit (= 0.96*e 0‐0335*Hct ). representin a two‐fold increase from 4.1 cP for killer whale blood to 8.9 cP for northern elephant seal. There was no apparent compensatory mechanism to reduce viscosity at any shear rate. The optimal haematocrit for oxygen transport was calculated to be40–50% for all species tested. The species with lower haematocrits were within optimal values for oxygen transport. while the two species with the highest haematocrits (beluga whales and northern elephant seals) were above predicted optimal oxygen transport values. On the basis of comparisons of the diving behaviour of these seven species, we suggest that marine mammal species with the greatest adaptation for increased oxygen stores via increased haematocrit have the capacity for deep, long‐duration dives, but a limited oxygen transport capacity. We predict that this compromise precludes fast sustainable swimming behaviour in these species. Article in Journal/Newspaper Beluga Beluga* Elephant Seal Elephant Seals Killer Whale Killer whale Wiley Online Library Journal of Zoology 225 2 273 283 |
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Wiley Online Library |
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crwiley |
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English |
description |
The haeniatological and rheological characteristics of blood from seven marine mammal species have been examined to determine the relationship between increased haematocrit. which is correlated with the ability to increase aerobic dive limits. and blood viscosity. The species examined reflect adaptations to a variety of marine niches ranging from coastal to pelagic to iceedge environments. and exhibit a wide range of diving behaviours. Average haematocrits ranged from43–45% in bottlenose dolphins. killer whales and California sea lions to more than 60% in the deeper diving species (beluga whales and northern elephant seals). Whole blood viscosity () increased exponentially with haematocrit (= 0.96*e 0‐0335*Hct ). representin a two‐fold increase from 4.1 cP for killer whale blood to 8.9 cP for northern elephant seal. There was no apparent compensatory mechanism to reduce viscosity at any shear rate. The optimal haematocrit for oxygen transport was calculated to be40–50% for all species tested. The species with lower haematocrits were within optimal values for oxygen transport. while the two species with the highest haematocrits (beluga whales and northern elephant seals) were above predicted optimal oxygen transport values. On the basis of comparisons of the diving behaviour of these seven species, we suggest that marine mammal species with the greatest adaptation for increased oxygen stores via increased haematocrit have the capacity for deep, long‐duration dives, but a limited oxygen transport capacity. We predict that this compromise precludes fast sustainable swimming behaviour in these species. |
format |
Article in Journal/Newspaper |
author |
Hedrick, Michael S. Duffield, Deborah A. |
spellingShingle |
Hedrick, Michael S. Duffield, Deborah A. Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
author_facet |
Hedrick, Michael S. Duffield, Deborah A. |
author_sort |
Hedrick, Michael S. |
title |
Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
title_short |
Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
title_full |
Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
title_fullStr |
Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
title_full_unstemmed |
Haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
title_sort |
haematological and rheological characteristics of blood in seven marine mammal species: physiological implications for diving behaviour |
publisher |
Wiley |
publishDate |
1991 |
url |
http://dx.doi.org/10.1111/j.1469-7998.1991.tb03816.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1991.tb03816.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb03816.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1991.tb03816.x |
genre |
Beluga Beluga* Elephant Seal Elephant Seals Killer Whale Killer whale |
genre_facet |
Beluga Beluga* Elephant Seal Elephant Seals Killer Whale Killer whale |
op_source |
Journal of Zoology volume 225, issue 2, page 273-283 ISSN 0952-8369 1469-7998 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-7998.1991.tb03816.x |
container_title |
Journal of Zoology |
container_volume |
225 |
container_issue |
2 |
container_start_page |
273 |
op_container_end_page |
283 |
_version_ |
1810435966989500416 |