Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival
To understand how the social and physical environment influences behaviour, reproduction and survival, studies of underlying hormonal processes are crucial; in particular, interactions between stress and reproductive responses may have critical influences on breeding schedules. Several authors have...
Published in: | General and Comparative Endocrinology |
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Language: | English |
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Academic Press Inc Elsevier Science
2011
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Online Access: | http://hdl.handle.net/2440/66764 https://doi.org/10.1016/j.ygcen.2011.05.006 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/66764 2023-12-17T10:17:41+01:00 Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival Ninnes, C. Waas, J. Ling, N. Nakagawa, S. Banks, J. Bell, D. Bright, A. Carey, P. Chandler, J. Hudson, Q. Ingram, J. Lyall, K. Morgan, D. Stevens, M. Wallace, J. Mostl, E. 2011 http://hdl.handle.net/2440/66764 https://doi.org/10.1016/j.ygcen.2011.05.006 en eng Academic Press Inc Elsevier Science General and Comparative Endocrinology, 2011; 173(1):139-147 0016-6480 1095-6840 http://hdl.handle.net/2440/66764 doi:10.1016/j.ygcen.2011.05.006 Stevens, M. [0000-0003-1505-1639] Copyright © 2011 Elsevier Inc. All rights reserved. Adelie penguin Breeding schedules Corticosterone Testosterone Oestrogens Sea ice Journal article 2011 ftunivadelaidedl https://doi.org/10.1016/j.ygcen.2011.05.006 2023-11-20T23:32:55Z To understand how the social and physical environment influences behaviour, reproduction and survival, studies of underlying hormonal processes are crucial; in particular, interactions between stress and reproductive responses may have critical influences on breeding schedules. Several authors have examined the timing of breeding in relation to environmental stimuli, while others have independently described endocrine profiles. However, few studies have simultaneously measured endocrine profiles, breeding behaviour, and offspring survival across seasons. We measured sex and stress hormone concentrations (oestrogens, testosterone, and corticosterone), timing of breeding, and chick survival, in Adelie penguins (Pygoscelis adeliae) at two colonies in two different years. Clutch initiation at Cape Bird South (CBS; year 1, ~14,000 pairs) occurred later than at Cape Crozier East (CCE; year 2, ~ 25,000 pairs); however, breeding was more synchronous at CBS. This pattern was probably generated by the persistence of extensive sea ice at CBS (year 1). Higher corticosterone metabolite and lower sex hormone concentrations at CBS correlated with later breeding and lower chick survival compared to at CCE - again, a likely consequence of sea ice conditions. Within colonies, sub-colony size (S, 50-100; M, 200-300; L, 500-600; XL, >1000 pairs) did not influence the onset or synchrony of breeding, chick survival, or hormone concentrations. We showed that the endocrine profiles of breeding Adelie penguins can differ markedly between years and/or colonies, and that combining measures of endocrinology, behaviour, and offspring survival can reveal the mechanisms and consequences that different environmental conditions can have on breeding ecology. C.E. Ninnes, J.R. Waas, N. Ling, S. Nakagawa, J.C. Banks, D.G. Bell, A. Bright, P.W. Carey, J. Chandler, Q.J. Hudson, J.R. Ingram, K. Lyall, D.K.J. Morgan, M.I. Stevens, J. Wallace, E. Möstl Article in Journal/Newspaper Adelie penguin Pygoscelis adeliae Sea ice The University of Adelaide: Digital Library Cape Bird ENVELOPE(-38.060,-38.060,-54.004,-54.004) Cape Crozier ENVELOPE(169.400,169.400,-77.517,-77.517) Chandler ENVELOPE(-59.682,-59.682,-64.490,-64.490) Crozier ENVELOPE(169.400,169.400,-77.517,-77.517) Hudson General and Comparative Endocrinology 173 1 139 147 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Adelie penguin Breeding schedules Corticosterone Testosterone Oestrogens Sea ice |
spellingShingle |
Adelie penguin Breeding schedules Corticosterone Testosterone Oestrogens Sea ice Ninnes, C. Waas, J. Ling, N. Nakagawa, S. Banks, J. Bell, D. Bright, A. Carey, P. Chandler, J. Hudson, Q. Ingram, J. Lyall, K. Morgan, D. Stevens, M. Wallace, J. Mostl, E. Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival |
topic_facet |
Adelie penguin Breeding schedules Corticosterone Testosterone Oestrogens Sea ice |
description |
To understand how the social and physical environment influences behaviour, reproduction and survival, studies of underlying hormonal processes are crucial; in particular, interactions between stress and reproductive responses may have critical influences on breeding schedules. Several authors have examined the timing of breeding in relation to environmental stimuli, while others have independently described endocrine profiles. However, few studies have simultaneously measured endocrine profiles, breeding behaviour, and offspring survival across seasons. We measured sex and stress hormone concentrations (oestrogens, testosterone, and corticosterone), timing of breeding, and chick survival, in Adelie penguins (Pygoscelis adeliae) at two colonies in two different years. Clutch initiation at Cape Bird South (CBS; year 1, ~14,000 pairs) occurred later than at Cape Crozier East (CCE; year 2, ~ 25,000 pairs); however, breeding was more synchronous at CBS. This pattern was probably generated by the persistence of extensive sea ice at CBS (year 1). Higher corticosterone metabolite and lower sex hormone concentrations at CBS correlated with later breeding and lower chick survival compared to at CCE - again, a likely consequence of sea ice conditions. Within colonies, sub-colony size (S, 50-100; M, 200-300; L, 500-600; XL, >1000 pairs) did not influence the onset or synchrony of breeding, chick survival, or hormone concentrations. We showed that the endocrine profiles of breeding Adelie penguins can differ markedly between years and/or colonies, and that combining measures of endocrinology, behaviour, and offspring survival can reveal the mechanisms and consequences that different environmental conditions can have on breeding ecology. C.E. Ninnes, J.R. Waas, N. Ling, S. Nakagawa, J.C. Banks, D.G. Bell, A. Bright, P.W. Carey, J. Chandler, Q.J. Hudson, J.R. Ingram, K. Lyall, D.K.J. Morgan, M.I. Stevens, J. Wallace, E. Möstl |
format |
Article in Journal/Newspaper |
author |
Ninnes, C. Waas, J. Ling, N. Nakagawa, S. Banks, J. Bell, D. Bright, A. Carey, P. Chandler, J. Hudson, Q. Ingram, J. Lyall, K. Morgan, D. Stevens, M. Wallace, J. Mostl, E. |
author_facet |
Ninnes, C. Waas, J. Ling, N. Nakagawa, S. Banks, J. Bell, D. Bright, A. Carey, P. Chandler, J. Hudson, Q. Ingram, J. Lyall, K. Morgan, D. Stevens, M. Wallace, J. Mostl, E. |
author_sort |
Ninnes, C. |
title |
Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival |
title_short |
Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival |
title_full |
Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival |
title_fullStr |
Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival |
title_full_unstemmed |
Environmental influences on Adelie penguin breeding schedules, endocrinology, and chick survival |
title_sort |
environmental influences on adelie penguin breeding schedules, endocrinology, and chick survival |
publisher |
Academic Press Inc Elsevier Science |
publishDate |
2011 |
url |
http://hdl.handle.net/2440/66764 https://doi.org/10.1016/j.ygcen.2011.05.006 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) ENVELOPE(169.400,169.400,-77.517,-77.517) ENVELOPE(-59.682,-59.682,-64.490,-64.490) ENVELOPE(169.400,169.400,-77.517,-77.517) |
geographic |
Cape Bird Cape Crozier Chandler Crozier Hudson |
geographic_facet |
Cape Bird Cape Crozier Chandler Crozier Hudson |
genre |
Adelie penguin Pygoscelis adeliae Sea ice |
genre_facet |
Adelie penguin Pygoscelis adeliae Sea ice |
op_relation |
General and Comparative Endocrinology, 2011; 173(1):139-147 0016-6480 1095-6840 http://hdl.handle.net/2440/66764 doi:10.1016/j.ygcen.2011.05.006 Stevens, M. [0000-0003-1505-1639] |
op_rights |
Copyright © 2011 Elsevier Inc. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.ygcen.2011.05.006 |
container_title |
General and Comparative Endocrinology |
container_volume |
173 |
container_issue |
1 |
container_start_page |
139 |
op_container_end_page |
147 |
_version_ |
1785583792829759488 |