{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T09:38:25Z","timestamp":1784367505769,"version":"3.55.0"},"reference-count":37,"publisher":"The Company of Biologists","license":[{"start":{"date-parts":[[2021,5,18]],"date-time":"2021-05-18T00:00:00Z","timestamp":1621296000000},"content-version":"am","delay-in-days":868,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Vetenskapsr?det","award":["637-2013-7442"],"award-info":[{"award-number":["637-2013-7442"]}]},{"name":"Birgit and Hellmuth Hertz Foundation","award":["2017-39034"],"award-info":[{"award-number":["2017-39034"]}]},{"name":"Laengmanska kulturfonden"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>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 temperatures changes during handling in low temperature have only been measured in small birds \u22640.03 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\u00b0C and \u221220\u00b0C, 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 \u221220\u00b0C than in 0\u00b0C, 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, possibly affecting 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.<\/jats:p>","DOI":"10.1242\/bio.043497","type":"journal-article","created":{"date-parts":[[2019,6,10]],"date-time":"2019-06-10T10:05:13Z","timestamp":1560161113000},"source":"Crossref","is-referenced-by-count":22,"title":["Ambient temperature effects on stress-induced hyperthermia in Svalbard ptarmigan"],"prefix":"10.1242","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6170-689X","authenticated-orcid":false,"given":"Andreas","family":"Nord","sequence":"first","affiliation":[{"name":"Department of Biology, Section for Evolutionary Ecology, Lund University, SE-223 62 Lund, Sweden"},{"name":"Department of Arctic and Marine Biology, University of Troms\u00f8\u2013the Arctic University of Norway, NO-9037 Troms\u00f8, Norway"},{"name":"Scottish Centre for Ecology and the Natural Environment, University of Glasgow, Rowardennan G63 0AW, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lars P.","family":"Folkow","sequence":"additional","affiliation":[{"name":"Department of Arctic and Marine Biology, University of Troms\u00f8\u2013the Arctic University of Norway, NO-9037 Troms\u00f8, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","published-online":{"date-parts":[[2019,1,1]]},"reference":[{"key":"2021042423555402200_BIO043497C1","doi-asserted-by":"publisher","DOI":"10.1111\/ibi.12737","article-title":"Body temperature responses of great tits Parus major to handling in the cold","author":"Andreasson","year":"2019","journal-title":"Ibis"},{"key":"2021042423555402200_BIO043497C2","doi-asserted-by":"publisher","first-page":"1","DOI":"10.18637\/jss.v067.i01","article-title":"Fitting linear mixed-effects models using lme4","volume":"67","author":"Bates","year":"2015","journal-title":"J. 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