Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment
8 pages, 3 figures, 1 table
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Format: | artículo biblioteca |
Language: | English |
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Royal Society (Great Britain)
2012-01
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Subjects: | Cory’s shearwater, Feather corticosterone, Life history, Parental investment, Stress physiology, Trade-offs, |
Online Access: | http://hdl.handle.net/10261/47445 |
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dig-icm-es-10261-474452021-12-27T16:37:20Z Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment Fairhurst, Graham D. Navarro, Joan González-Solís, Jacob Marchant, Tracy A. Bortolotti, Gary R. Cory’s shearwater Feather corticosterone Life history Parental investment Stress physiology Trade-offs 8 pages, 3 figures, 1 table Offspring of long-lived species should face costs of parental trade-offs that vary with overall energetic demands encountered by parents during breeding. If sex differences exist in how parents make the trade-off, sex-specific differences may exist in the contribution of each parent to those costs. Adaptations of offspring facing such costs are not well understood, but the hormone corticosterone probably plays a role. We manipulated breeding effort in Cory's shearwaters (Calonectris diomedea) to increase costs to offspring and used an integrated measure of corticosterone from chick feathers to investigate how experimental variation in parental investment influences offspring physiology. Average foraging trip duration and foraging efficiency (FE) of breeding pairs were not related to chick corticosterone, but sex biases in FE were. Adult male investment was more strongly related to chick corticosterone than was female investment. Importantly, we show for the first time suppression of adrenocortical activity in nestling Procellariiform seabirds, and explain how our results indicate an adaptive mechanism invoked by chicks facing increased costs of parental trade-offs Funding for this work was provided by the Natural Sciences and Engineering Research Council of Canada and the Stuart and Mary Houston Professorship in Ornithology (to G.R.B.), and projects REN2002-01 164 and BOS2000-0569-CO2-01 from the Spanish Government. G.D.F. was supported by a University of Saskatchewan Dean’s Scholarship, a Ruby Larson Scholarship, a Malcolm A. Ramsay Memorial Award, and the Nature Saskatchewan Graduate Student Grant Peer reviewed 2012-03-26T07:29:42Z 2012-03-26T07:29:42Z 2012-01 artículo http://purl.org/coar/resource_type/c_6501 Proceedings of the Royal Society of London - B 279(1726): 177-184 (2012) http://hdl.handle.net/10261/47445 10.1098/rspb.2011.0884 1471-2954 21632628 en https://doi.org/10.1098/rspb.2011.0884 open Royal Society (Great Britain) |
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Cory’s shearwater Feather corticosterone Life history Parental investment Stress physiology Trade-offs Cory’s shearwater Feather corticosterone Life history Parental investment Stress physiology Trade-offs |
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Cory’s shearwater Feather corticosterone Life history Parental investment Stress physiology Trade-offs Cory’s shearwater Feather corticosterone Life history Parental investment Stress physiology Trade-offs Fairhurst, Graham D. Navarro, Joan González-Solís, Jacob Marchant, Tracy A. Bortolotti, Gary R. Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
description |
8 pages, 3 figures, 1 table |
format |
artículo |
topic_facet |
Cory’s shearwater Feather corticosterone Life history Parental investment Stress physiology Trade-offs |
author |
Fairhurst, Graham D. Navarro, Joan González-Solís, Jacob Marchant, Tracy A. Bortolotti, Gary R. |
author_facet |
Fairhurst, Graham D. Navarro, Joan González-Solís, Jacob Marchant, Tracy A. Bortolotti, Gary R. |
author_sort |
Fairhurst, Graham D. |
title |
Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
title_short |
Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
title_full |
Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
title_fullStr |
Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
title_full_unstemmed |
Feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
title_sort |
feather corticosterone of a nestling seabird reveals consequences of sex-specific parental investment |
publisher |
Royal Society (Great Britain) |
publishDate |
2012-01 |
url |
http://hdl.handle.net/10261/47445 |
work_keys_str_mv |
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