Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese
Abstract We investigated effects of ecological and physiological factors on brood patch area and prolactin levels in free-ranging Lesser Snow Geese (Chen caerulescens caerulescens; hereafter “Snow Geese”) and Ross's Geese (C. rossii). On the basis of the body-size hypothesis, we predicted that...
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Online Access: | http://dx.doi.org/10.1093/auk/123.2.405 http://academic.oup.com/auk/article-pdf/123/2/405/29690812/auk405.pdf |
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croxfordunivpr:10.1093/auk/123.2.405 2023-05-15T15:09:10+02:00 Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese Jónsson, Jón Einar Afton, Alan D. Alisauskas, Ray T. Bluhm, Cynthia K. El Halawani, Mohamed E. Dufty Jr., A. M. 2006 http://dx.doi.org/10.1093/auk/123.2.405 http://academic.oup.com/auk/article-pdf/123/2/405/29690812/auk405.pdf en eng Oxford University Press (OUP) The Auk volume 123, issue 2, page 405-418 ISSN 1938-4254 0004-8038 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2006 croxfordunivpr https://doi.org/10.1093/auk/123.2.405 2022-04-15T06:19:37Z Abstract We investigated effects of ecological and physiological factors on brood patch area and prolactin levels in free-ranging Lesser Snow Geese (Chen caerulescens caerulescens; hereafter “Snow Geese”) and Ross's Geese (C. rossii). On the basis of the body-size hypothesis, we predicted that the relationships between prolactin levels, brood patch area, and body condition would be stronger in Ross's Geese than in the larger Snow Geese. We found that brood patch area was positively related to clutch volume and inversely related to prolactin levels in Ross's Geese, but not in Snow Geese. Nest size, nest habitat, and first egg date did not affect brood patch area in either species. Prolactin levels increased as incubation progressed in female Snow Geese, but this relationship was not significant in Ross's Geese. Prolactin levels and body condition (as indexed by size-adjusted body mass) were inversely related in Ross's Geese, but not in Snow Geese. Our findings are consistent with the prediction that relationships between prolactin levels, brood patch area, and body condition are relatively stronger in Ross's Geese, because they mobilize endogenous reserves at faster rates than Snow Geese. Factores Ecológicos y Fisiológicos que Afectan el Área del Parche de Incubación y los Niveles de Prolactina en Gansos Nidificantes del Ártico Article in Journal/Newspaper Arctic Oxford University Press (via Crossref) Arctic The Auk 123 2 405 418 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Jónsson, Jón Einar Afton, Alan D. Alisauskas, Ray T. Bluhm, Cynthia K. El Halawani, Mohamed E. Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract We investigated effects of ecological and physiological factors on brood patch area and prolactin levels in free-ranging Lesser Snow Geese (Chen caerulescens caerulescens; hereafter “Snow Geese”) and Ross's Geese (C. rossii). On the basis of the body-size hypothesis, we predicted that the relationships between prolactin levels, brood patch area, and body condition would be stronger in Ross's Geese than in the larger Snow Geese. We found that brood patch area was positively related to clutch volume and inversely related to prolactin levels in Ross's Geese, but not in Snow Geese. Nest size, nest habitat, and first egg date did not affect brood patch area in either species. Prolactin levels increased as incubation progressed in female Snow Geese, but this relationship was not significant in Ross's Geese. Prolactin levels and body condition (as indexed by size-adjusted body mass) were inversely related in Ross's Geese, but not in Snow Geese. Our findings are consistent with the prediction that relationships between prolactin levels, brood patch area, and body condition are relatively stronger in Ross's Geese, because they mobilize endogenous reserves at faster rates than Snow Geese. Factores Ecológicos y Fisiológicos que Afectan el Área del Parche de Incubación y los Niveles de Prolactina en Gansos Nidificantes del Ártico |
author2 |
Dufty Jr., A. M. |
format |
Article in Journal/Newspaper |
author |
Jónsson, Jón Einar Afton, Alan D. Alisauskas, Ray T. Bluhm, Cynthia K. El Halawani, Mohamed E. |
author_facet |
Jónsson, Jón Einar Afton, Alan D. Alisauskas, Ray T. Bluhm, Cynthia K. El Halawani, Mohamed E. |
author_sort |
Jónsson, Jón Einar |
title |
Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese |
title_short |
Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese |
title_full |
Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese |
title_fullStr |
Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese |
title_full_unstemmed |
Ecological and Physiological Factors Affecting Brood Patch Area and Prolactin Levels in Arctic-Nesting Geese |
title_sort |
ecological and physiological factors affecting brood patch area and prolactin levels in arctic-nesting geese |
publisher |
Oxford University Press (OUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1093/auk/123.2.405 http://academic.oup.com/auk/article-pdf/123/2/405/29690812/auk405.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The Auk volume 123, issue 2, page 405-418 ISSN 1938-4254 0004-8038 |
op_doi |
https://doi.org/10.1093/auk/123.2.405 |
container_title |
The Auk |
container_volume |
123 |
container_issue |
2 |
container_start_page |
405 |
op_container_end_page |
418 |
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1766340402812551168 |