Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines
Arctic foxes and gray wolves maintain their foot temperature just above the tissue freezing point (about -1°C) when standing on extremely cold snow, or when the foot is immersed in a -35°C bath in the laboratory. Proportional thermoregulation stabilized the subcutaneous temperature of the foot pad t...
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Language: | English |
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American Association for the Advancement of Science (AAAS)
1972
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Online Access: | http://dx.doi.org/10.1126/science.175.4025.988 https://www.science.org/doi/pdf/10.1126/science.175.4025.988 |
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craaas:10.1126/science.175.4025.988 2024-06-09T07:43:31+00:00 Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines Henshaw, Robert E. Underwood, Larry S. Casey, Timothy M. 1972 http://dx.doi.org/10.1126/science.175.4025.988 https://www.science.org/doi/pdf/10.1126/science.175.4025.988 en eng American Association for the Advancement of Science (AAAS) Science volume 175, issue 4025, page 988-990 ISSN 0036-8075 1095-9203 journal-article 1972 craaas https://doi.org/10.1126/science.175.4025.988 2024-05-16T12:55:06Z Arctic foxes and gray wolves maintain their foot temperature just above the tissue freezing point (about -1°C) when standing on extremely cold snow, or when the foot is immersed in a -35°C bath in the laboratory. Proportional thermoregulation stabilized the subcutaneous temperature of the foot pad to a precision of ± 0.7°C (largest deviations). Selective shunting of blood-borne body heat through a cutaneous vascular plexus in the foot pad accounted for more than 99 percent of measured heat loss from the pad surface. Maximum energetic efficiency is achieved because the unit of heat exchange is located in the pad surface which contacts the cold substrate rather than throughout the pad. Article in Journal/Newspaper Arctic AAAS Resource Center (American Association for the Advancement of Science) Arctic Science 175 4025 988 990 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Arctic foxes and gray wolves maintain their foot temperature just above the tissue freezing point (about -1°C) when standing on extremely cold snow, or when the foot is immersed in a -35°C bath in the laboratory. Proportional thermoregulation stabilized the subcutaneous temperature of the foot pad to a precision of ± 0.7°C (largest deviations). Selective shunting of blood-borne body heat through a cutaneous vascular plexus in the foot pad accounted for more than 99 percent of measured heat loss from the pad surface. Maximum energetic efficiency is achieved because the unit of heat exchange is located in the pad surface which contacts the cold substrate rather than throughout the pad. |
format |
Article in Journal/Newspaper |
author |
Henshaw, Robert E. Underwood, Larry S. Casey, Timothy M. |
spellingShingle |
Henshaw, Robert E. Underwood, Larry S. Casey, Timothy M. Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines |
author_facet |
Henshaw, Robert E. Underwood, Larry S. Casey, Timothy M. |
author_sort |
Henshaw, Robert E. |
title |
Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines |
title_short |
Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines |
title_full |
Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines |
title_fullStr |
Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines |
title_full_unstemmed |
Peripheral Thermoregulation: Foot Temperature in Two Arctic Canines |
title_sort |
peripheral thermoregulation: foot temperature in two arctic canines |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1972 |
url |
http://dx.doi.org/10.1126/science.175.4025.988 https://www.science.org/doi/pdf/10.1126/science.175.4025.988 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Science volume 175, issue 4025, page 988-990 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.175.4025.988 |
container_title |
Science |
container_volume |
175 |
container_issue |
4025 |
container_start_page |
988 |
op_container_end_page |
990 |
_version_ |
1801372347601518592 |