Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan
Stress-induced hyperthermia (SIH) is commonly observed during handling in homeotherms. However, in birds, handling in cold environments typically elicits hypothermia. It is unclear whether this indicates that SIH is differently regulated in this taxon or if it is due to size, because body temperatur...
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The Company of Biologists
2019
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ftdoajarticles:oai:doaj.org/article:9292b5c875fb4ad98ab3e5090702126b 2023-05-15T15:08:28+02:00 Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan Andreas Nord Lars P. Folkow 2019-06-01T00:00:00Z https://doi.org/10.1242/bio.043497 https://doaj.org/article/9292b5c875fb4ad98ab3e5090702126b EN eng The Company of Biologists http://bio.biologists.org/content/8/6/bio043497 https://doaj.org/toc/2046-6390 2046-6390 doi:10.1242/bio.043497 https://doaj.org/article/9292b5c875fb4ad98ab3e5090702126b Biology Open, Vol 8, Iss 6 (2019) Arctic Body temperature Handling Polar Stress Stress-induced hyperthermia Thermoregulation Science Q Biology (General) QH301-705.5 article 2019 ftdoajarticles https://doi.org/10.1242/bio.043497 2022-12-31T05:44:09Z Stress-induced hyperthermia (SIH) is commonly observed during handling in homeotherms. However, in birds, handling in cold environments typically elicits hypothermia. It is unclear whether this indicates that SIH is differently regulated in this taxon or if it is due to size, because body temperature changes during handling in low temperatures have only been measured in small birds <0.03 kg (that are more likely to suffer high heat loss when handled). We have therefore studied thermal responses to handling stress in the intermediate-sized (0.5–1.0 kg) Svalbard ptarmigan (Lagopus muta hyperborea) in 0°C and −20°C, in winter and spring. Handling caused elevated core body temperature and peripheral vasoconstriction that reduced back skin temperature. Core temperature increased less, and back skin temperature decreased more, in −20°C than in 0°C, probably because of higher heat-loss rate at the lower temperature. Responses were qualitatively consistent between seasons, despite higher body condition/insulation in winter and dramatic seasonal changes in photoperiod, both of which could possibly affect stress responsiveness. Our study supports the notion that SIH is a general thermoregulatory reaction to acute stressors in endotherms, but also suggests that body size and thermal environment should be taken into account when evaluating this response in birds. Article in Journal/Newspaper Arctic Lagopus muta Lagopus muta hyperborea Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Biology Open |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic Body temperature Handling Polar Stress Stress-induced hyperthermia Thermoregulation Science Q Biology (General) QH301-705.5 |
spellingShingle |
Arctic Body temperature Handling Polar Stress Stress-induced hyperthermia Thermoregulation Science Q Biology (General) QH301-705.5 Andreas Nord Lars P. Folkow Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan |
topic_facet |
Arctic Body temperature Handling Polar Stress Stress-induced hyperthermia Thermoregulation Science Q Biology (General) QH301-705.5 |
description |
Stress-induced hyperthermia (SIH) is commonly observed during handling in homeotherms. However, in birds, handling in cold environments typically elicits hypothermia. It is unclear whether this indicates that SIH is differently regulated in this taxon or if it is due to size, because body temperature changes during handling in low temperatures have only been measured in small birds <0.03 kg (that are more likely to suffer high heat loss when handled). We have therefore studied thermal responses to handling stress in the intermediate-sized (0.5–1.0 kg) Svalbard ptarmigan (Lagopus muta hyperborea) in 0°C and −20°C, in winter and spring. Handling caused elevated core body temperature and peripheral vasoconstriction that reduced back skin temperature. Core temperature increased less, and back skin temperature decreased more, in −20°C than in 0°C, probably because of higher heat-loss rate at the lower temperature. Responses were qualitatively consistent between seasons, despite higher body condition/insulation in winter and dramatic seasonal changes in photoperiod, both of which could possibly affect stress responsiveness. Our study supports the notion that SIH is a general thermoregulatory reaction to acute stressors in endotherms, but also suggests that body size and thermal environment should be taken into account when evaluating this response in birds. |
format |
Article in Journal/Newspaper |
author |
Andreas Nord Lars P. Folkow |
author_facet |
Andreas Nord Lars P. Folkow |
author_sort |
Andreas Nord |
title |
Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan |
title_short |
Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan |
title_full |
Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan |
title_fullStr |
Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan |
title_full_unstemmed |
Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan |
title_sort |
ambient temperature effects on stress-induced hyperthermia in svalbard ptarmigan |
publisher |
The Company of Biologists |
publishDate |
2019 |
url |
https://doi.org/10.1242/bio.043497 https://doaj.org/article/9292b5c875fb4ad98ab3e5090702126b |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Lagopus muta Lagopus muta hyperborea Svalbard |
genre_facet |
Arctic Lagopus muta Lagopus muta hyperborea Svalbard |
op_source |
Biology Open, Vol 8, Iss 6 (2019) |
op_relation |
http://bio.biologists.org/content/8/6/bio043497 https://doaj.org/toc/2046-6390 2046-6390 doi:10.1242/bio.043497 https://doaj.org/article/9292b5c875fb4ad98ab3e5090702126b |
op_doi |
https://doi.org/10.1242/bio.043497 |
container_title |
Biology Open |
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1766339821866844160 |