Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua
Birds such as great skuas Catharacta skua adapted for successful breeding at high latitudes may experience problems of heat dissipation in mild climates. Great skuas spend time bathing at freshwater sites close to breeding territories and here, we examine impacts of heat stress on bathing, foraging...
Published in: | Journal of Avian Biology |
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Online Access: | https://eprints.gla.ac.uk/4249/ https://doi.org/10.1111/j.2008.0908-8857.04187.x |
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ftuglasgow:oai:eprints.gla.ac.uk:4249 2023-05-15T15:53:39+02:00 Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua Oswald, S.A. Bearhop, S. Furness, R.W. Huntley, B. Hamer, K.C. 2008-03 https://eprints.gla.ac.uk/4249/ https://doi.org/10.1111/j.2008.0908-8857.04187.x unknown Oswald, S.A., Bearhop, S., Furness, R.W. <http://eprints.gla.ac.uk/view/author/11403.html>, Huntley, B. and Hamer, K.C. (2008) Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua. Journal of Avian Biology <https://eprints.gla.ac.uk/view/journal_volume/Journal_of_Avian_Biology.html>, 39(2), pp. 163-169. (doi:10.1111/j.2008.0908-8857.04187.x <https://doi.org/10.1111/j.2008.0908-8857.04187.x>) QL Zoology GE Environmental Sciences Articles PeerReviewed 2008 ftuglasgow https://doi.org/10.1111/j.2008.0908-8857.04187.x 2022-09-22T22:09:03Z Birds such as great skuas Catharacta skua adapted for successful breeding at high latitudes may experience problems of heat dissipation in mild climates. Great skuas spend time bathing at freshwater sites close to breeding territories and here, we examine impacts of heat stress on bathing, foraging and nest attendance of adults during three breeding seasons with marked variation in the availability of prey (1-group sandeels Ammodytes marinus). Adults exhibited diurnal variation in bathing activity that matched heat-stress conditions. Moreover more birds bathed on days of higher average heat stress, suggesting that bathing plays a role in thermoregulation. Bathing numbers were lower in years of poor food availability, when adult attendance at territories was low, probably because lower attendance reduced the opportunity for parents to bathe without leaving chicks unattended. Chicks are normally guarded by female parents and fed by males but under conditions of low food availability territorial attendance of breeding pairs was particularly low on days of high heat stress, with chicks regularly left unattended at air temperatures exceeding 14 degrees C. Unattended chicks are at risk of being killed by neighbouring conspecifics and survival of chicks to fledging was low in the two years of low sandeel stocks. Our study indicates that for great skuas, indirect effects of climate change on prey stocks and direct effects on heat stress experienced by adults may be additive Article in Journal/Newspaper Catharacta skua University of Glasgow: Enlighten - Publications Journal of Avian Biology 39 2 163 169 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
unknown |
topic |
QL Zoology GE Environmental Sciences |
spellingShingle |
QL Zoology GE Environmental Sciences Oswald, S.A. Bearhop, S. Furness, R.W. Huntley, B. Hamer, K.C. Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua |
topic_facet |
QL Zoology GE Environmental Sciences |
description |
Birds such as great skuas Catharacta skua adapted for successful breeding at high latitudes may experience problems of heat dissipation in mild climates. Great skuas spend time bathing at freshwater sites close to breeding territories and here, we examine impacts of heat stress on bathing, foraging and nest attendance of adults during three breeding seasons with marked variation in the availability of prey (1-group sandeels Ammodytes marinus). Adults exhibited diurnal variation in bathing activity that matched heat-stress conditions. Moreover more birds bathed on days of higher average heat stress, suggesting that bathing plays a role in thermoregulation. Bathing numbers were lower in years of poor food availability, when adult attendance at territories was low, probably because lower attendance reduced the opportunity for parents to bathe without leaving chicks unattended. Chicks are normally guarded by female parents and fed by males but under conditions of low food availability territorial attendance of breeding pairs was particularly low on days of high heat stress, with chicks regularly left unattended at air temperatures exceeding 14 degrees C. Unattended chicks are at risk of being killed by neighbouring conspecifics and survival of chicks to fledging was low in the two years of low sandeel stocks. Our study indicates that for great skuas, indirect effects of climate change on prey stocks and direct effects on heat stress experienced by adults may be additive |
format |
Article in Journal/Newspaper |
author |
Oswald, S.A. Bearhop, S. Furness, R.W. Huntley, B. Hamer, K.C. |
author_facet |
Oswald, S.A. Bearhop, S. Furness, R.W. Huntley, B. Hamer, K.C. |
author_sort |
Oswald, S.A. |
title |
Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua |
title_short |
Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua |
title_full |
Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua |
title_fullStr |
Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua |
title_full_unstemmed |
Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua |
title_sort |
heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas catharacta skua |
publishDate |
2008 |
url |
https://eprints.gla.ac.uk/4249/ https://doi.org/10.1111/j.2008.0908-8857.04187.x |
genre |
Catharacta skua |
genre_facet |
Catharacta skua |
op_relation |
Oswald, S.A., Bearhop, S., Furness, R.W. <http://eprints.gla.ac.uk/view/author/11403.html>, Huntley, B. and Hamer, K.C. (2008) Heat stress in a high-latitude seabird: effects of temperature and food supply on bathing and nest attendance of great skuas Catharacta skua. Journal of Avian Biology <https://eprints.gla.ac.uk/view/journal_volume/Journal_of_Avian_Biology.html>, 39(2), pp. 163-169. (doi:10.1111/j.2008.0908-8857.04187.x <https://doi.org/10.1111/j.2008.0908-8857.04187.x>) |
op_doi |
https://doi.org/10.1111/j.2008.0908-8857.04187.x |
container_title |
Journal of Avian Biology |
container_volume |
39 |
container_issue |
2 |
container_start_page |
163 |
op_container_end_page |
169 |
_version_ |
1766388762664763392 |