Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting
Life-history stages such as reproduction and molt are energetically costly. Reproductive costs include those associated not only with offspring production, but also protecting and provisioning young. Costs typically associated with molting include decreased thermoregulatory and locomotive performanc...
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Online Access: | http://hdl.handle.net/10261/203405 https://doi.org/10.1111/jofo.12297 https://doi.org/10.13039/501100003329 |
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ftcsic:oai:digital.csic.es:10261/203405 2024-02-11T09:56:18+01:00 Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting Colominas-Ciuró, R. Masero, José A. Benzal, Jesús Bertellotti, M. Barbosa, Andrés Ministerio de Economía y Competitividad (España) 2019 http://hdl.handle.net/10261/203405 https://doi.org/10.1111/jofo.12297 https://doi.org/10.13039/501100003329 unknown John Wiley & Sons Postprint http://dx.doi.org/10.1111/jofo.12297 Sí doi:10.1111/jofo.12297 issn: 1557-9263 Journal of Field Ornithology 90: 190- 199 (2019) http://hdl.handle.net/10261/203405 http://dx.doi.org/10.13039/501100003329 open artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.1111/jofo.1229710.13039/501100003329 2024-01-16T10:49:49Z Life-history stages such as reproduction and molt are energetically costly. Reproductive costs include those associated not only with offspring production, but also protecting and provisioning young. Costs typically associated with molting include decreased thermoregulatory and locomotive performance, and increased metabolic and nutritional costs. Energetic demands may disrupt homeostasis, particularly in terms of its maintenance (e.g., oxidative stress and immunity). Few investigators have explored the relationship between effort (increased metabolic rate) and oxidative status and stress by comparing life-history stages with different energetic demands. However, comparative studies are crucial for understanding the processes of energy allocation and their consequences for different physiological functions. Our objective was to determine how two highly demanding life-history stages, breeding and molting, affected oxidative balance in Chinstrap Penguins (Pygoscelis antarcticus), a species where these two activities do not overlap. We found that the heterophil/lymphocyte (H/L) ratio was significantly higher during breeding than molting; oxidative damage was also higher during breeding. In contrast, we found no significant differences between these stages in total antioxidant capacity. We also found sex differences, with males having greater oxidative damage than females. Our results suggest that breeding is more stressful and more demanding for Chinstrap Penguins than molting, and provide further support for the relationship between effort, in terms of increased metabolic rate, and oxidative balance. his study was funded by the Spanish Ministry of Economy and Competitiveness (CTM2011‐24427 and CTM2015‐64720). RCC held a Spanish Ministry of Economy and Competitiveness FPI grant (BES2012‐059299). Article in Journal/Newspaper Antarc* antarcticus Digital.CSIC (Spanish National Research Council) Journal of Field Ornithology 90 2 190 199 |
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Digital.CSIC (Spanish National Research Council) |
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Life-history stages such as reproduction and molt are energetically costly. Reproductive costs include those associated not only with offspring production, but also protecting and provisioning young. Costs typically associated with molting include decreased thermoregulatory and locomotive performance, and increased metabolic and nutritional costs. Energetic demands may disrupt homeostasis, particularly in terms of its maintenance (e.g., oxidative stress and immunity). Few investigators have explored the relationship between effort (increased metabolic rate) and oxidative status and stress by comparing life-history stages with different energetic demands. However, comparative studies are crucial for understanding the processes of energy allocation and their consequences for different physiological functions. Our objective was to determine how two highly demanding life-history stages, breeding and molting, affected oxidative balance in Chinstrap Penguins (Pygoscelis antarcticus), a species where these two activities do not overlap. We found that the heterophil/lymphocyte (H/L) ratio was significantly higher during breeding than molting; oxidative damage was also higher during breeding. In contrast, we found no significant differences between these stages in total antioxidant capacity. We also found sex differences, with males having greater oxidative damage than females. Our results suggest that breeding is more stressful and more demanding for Chinstrap Penguins than molting, and provide further support for the relationship between effort, in terms of increased metabolic rate, and oxidative balance. his study was funded by the Spanish Ministry of Economy and Competitiveness (CTM2011‐24427 and CTM2015‐64720). RCC held a Spanish Ministry of Economy and Competitiveness FPI grant (BES2012‐059299). |
author2 |
Ministerio de Economía y Competitividad (España) |
format |
Article in Journal/Newspaper |
author |
Colominas-Ciuró, R. Masero, José A. Benzal, Jesús Bertellotti, M. Barbosa, Andrés |
spellingShingle |
Colominas-Ciuró, R. Masero, José A. Benzal, Jesús Bertellotti, M. Barbosa, Andrés Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting |
author_facet |
Colominas-Ciuró, R. Masero, José A. Benzal, Jesús Bertellotti, M. Barbosa, Andrés |
author_sort |
Colominas-Ciuró, R. |
title |
Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting |
title_short |
Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting |
title_full |
Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting |
title_fullStr |
Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting |
title_full_unstemmed |
Oxidative status and stress during highly energetic life-history stages of Chinstrap Penguins: breeding versus molting |
title_sort |
oxidative status and stress during highly energetic life-history stages of chinstrap penguins: breeding versus molting |
publisher |
John Wiley & Sons |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/203405 https://doi.org/10.1111/jofo.12297 https://doi.org/10.13039/501100003329 |
genre |
Antarc* antarcticus |
genre_facet |
Antarc* antarcticus |
op_relation |
Postprint http://dx.doi.org/10.1111/jofo.12297 Sí doi:10.1111/jofo.12297 issn: 1557-9263 Journal of Field Ornithology 90: 190- 199 (2019) http://hdl.handle.net/10261/203405 http://dx.doi.org/10.13039/501100003329 |
op_rights |
open |
op_doi |
https://doi.org/10.1111/jofo.1229710.13039/501100003329 |
container_title |
Journal of Field Ornithology |
container_volume |
90 |
container_issue |
2 |
container_start_page |
190 |
op_container_end_page |
199 |
_version_ |
1790602085318787072 |