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Body temperature responses of Great Tits Parus major to handling in the cold

Andreasson, Fredrik LU ; Nord, Andreas LU and Nilsson, Jan Åke LU (2019) In Ibis
Abstract

Animals typically respond to stressful stimuli such as handling by increasing core body temperature. However, small birds in cold environments have been found to decrease body temperature (Tb) when handled over longer periods, although there are no data extending beyond the actual handling event in such birds. We therefore measured both the initial Tb decrease during ringing and standardized Tb sampling, and subsequent recovery of Tb after this handling protocol in wild Great Tits Parus major roosting in nestboxes in winter. Birds reduced their Tb by 2.3 °C during c. 4 min of handling. When birds were returned to their nestboxes after handling, Tb decreased by a further... (More)

Animals typically respond to stressful stimuli such as handling by increasing core body temperature. However, small birds in cold environments have been found to decrease body temperature (Tb) when handled over longer periods, although there are no data extending beyond the actual handling event in such birds. We therefore measured both the initial Tb decrease during ringing and standardized Tb sampling, and subsequent recovery of Tb after this handling protocol in wild Great Tits Parus major roosting in nestboxes in winter. Birds reduced their Tb by 2.3 °C during c. 4 min of handling. When birds were returned to their nestboxes after handling, Tb decreased by a further 1.9 °C over c. 2 min, reaching a Tb of 34.6 °C before taking 20 min to rewarm to 2.5 °C above their initial Tb. The Tb reduction during handling could be a consequence of increased heat loss rate from disrupted plumage insulation, whereas Tb reduction after handling might reflect reduced heat production. These are important factors to consider when handling small birds in the cold.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
heat production, heterothermy, plumage insulation, stress response, stress-induced hyperthermia
in
Ibis
publisher
Wiley-Blackwell
external identifiers
  • scopus:85067048783
ISSN
0019-1019
DOI
10.1111/ibi.12737
language
English
LU publication?
yes
id
1fdab7a0-6a34-4823-aecf-c207d76e9981
date added to LUP
2019-07-02 15:44:07
date last changed
2019-09-17 04:58:10
@article{1fdab7a0-6a34-4823-aecf-c207d76e9981,
  abstract     = {<p>Animals typically respond to stressful stimuli such as handling by increasing core body temperature. However, small birds in cold environments have been found to decrease body temperature (T<sub>b</sub>) when handled over longer periods, although there are no data extending beyond the actual handling event in such birds. We therefore measured both the initial T<sub>b</sub> decrease during ringing and standardized T<sub>b</sub> sampling, and subsequent recovery of T<sub>b</sub> after this handling protocol in wild Great Tits Parus major roosting in nestboxes in winter. Birds reduced their T<sub>b</sub> by 2.3 °C during c. 4 min of handling. When birds were returned to their nestboxes after handling, T<sub>b</sub> decreased by a further 1.9 °C over c. 2 min, reaching a T<sub>b</sub> of 34.6 °C before taking 20 min to rewarm to 2.5 °C above their initial T<sub>b</sub>. The T<sub>b</sub> reduction during handling could be a consequence of increased heat loss rate from disrupted plumage insulation, whereas T<sub>b</sub> reduction after handling might reflect reduced heat production. These are important factors to consider when handling small birds in the cold.</p>},
  author       = {Andreasson, Fredrik and Nord, Andreas and Nilsson, Jan Åke},
  issn         = {0019-1019},
  keyword      = {heat production,heterothermy,plumage insulation,stress response,stress-induced hyperthermia},
  language     = {eng},
  publisher    = {Wiley-Blackwell},
  series       = {Ibis},
  title        = {Body temperature responses of Great Tits Parus major to handling in the cold},
  url          = {http://dx.doi.org/10.1111/ibi.12737},
  year         = {2019},
}