Oxidative status and telomere length in a long-lived bird facing a costly reproductive event
International audience Life-history theory predicts that high reproductive investment alters self-maintenance. Several mechanisms underlying the cost of reproduction have been previously suggested, but how parental effort may impact cell and organism maintenance remains largely unknown. The effects...
Published in: | Functional Ecology |
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Online Access: | https://hal.science/hal-00540282 https://doi.org/10.1111/j.1365-2435.2010.01825.x |
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fthalin2p3:oai:HAL:hal-00540282v1 2024-05-12T08:10:17+00:00 Oxidative status and telomere length in a long-lived bird facing a costly reproductive event Beaulieu, Michael Reichert, Sophie Le Maho, Yvon Ancel, André Criscuolo, François Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) IPEV, TAAF 2011 https://hal.science/hal-00540282 https://doi.org/10.1111/j.1365-2435.2010.01825.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2435.2010.01825.x hal-00540282 https://hal.science/hal-00540282 doi:10.1111/j.1365-2435.2010.01825.x ISSN: 0269-8463 EISSN: 1365-2435 Functional Ecology https://hal.science/hal-00540282 Functional Ecology, 2011, 25 (3), pp.577-585. ⟨10.1111/j.1365-2435.2010.01825.x⟩ Adélie penguin breeding effort long-lived species oxidative stress telomeres [SDE]Environmental Sciences [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] info:eu-repo/semantics/article Journal articles 2011 fthalin2p3 https://doi.org/10.1111/j.1365-2435.2010.01825.x 2024-04-17T15:13:23Z International audience Life-history theory predicts that high reproductive investment alters self-maintenance. Several mechanisms underlying the cost of reproduction have been previously suggested, but how parental effort may impact cell and organism maintenance remains largely unknown. The effects of oxidative stress - the unbalance between oxidative damage and defences - on telomere dynamics may underlie this relationship. Indeed, oxidative stress is associated to costly activities like breeding and impacts telomere length that is known to predict survival in birds. According to life-history theory, long-lived species are expected to minimize the adverse effects of current reproduction on their body maintenance and should therefore control their oxidative stress and preserve their telomeres whatever the breeding workload. In the present paper, we tested this hypothesis by determining experimentally how the oxidative balance and telomere length are modified when long-lived Adélie penguins (Pygoscelis adeliae) face a costly reproductive event. In agreement with the hypothesis postulating that long-lived species should prioritize their self-maintenance, Adélie penguins substantially increase their antioxidant defence when experiencing a costly breeding effort. This antioxidant adaptability was associated with no acceleration in the change of telomere length reflecting no impact on organism senescence. While previous studies have shown that long-lived species favour self-maintenance when breeding constraints increase, our study is the first to point a cellular mechanism likely to explain how this may occur, thereby confirming experimentally that the couple oxidative stress / telomere is an essential mediator of life-history strategies. Article in Journal/Newspaper Pygoscelis adeliae HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) Functional Ecology 25 3 577 585 |
institution |
Open Polar |
collection |
HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) |
op_collection_id |
fthalin2p3 |
language |
English |
topic |
Adélie penguin breeding effort long-lived species oxidative stress telomeres [SDE]Environmental Sciences [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
spellingShingle |
Adélie penguin breeding effort long-lived species oxidative stress telomeres [SDE]Environmental Sciences [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] Beaulieu, Michael Reichert, Sophie Le Maho, Yvon Ancel, André Criscuolo, François Oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
topic_facet |
Adélie penguin breeding effort long-lived species oxidative stress telomeres [SDE]Environmental Sciences [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
description |
International audience Life-history theory predicts that high reproductive investment alters self-maintenance. Several mechanisms underlying the cost of reproduction have been previously suggested, but how parental effort may impact cell and organism maintenance remains largely unknown. The effects of oxidative stress - the unbalance between oxidative damage and defences - on telomere dynamics may underlie this relationship. Indeed, oxidative stress is associated to costly activities like breeding and impacts telomere length that is known to predict survival in birds. According to life-history theory, long-lived species are expected to minimize the adverse effects of current reproduction on their body maintenance and should therefore control their oxidative stress and preserve their telomeres whatever the breeding workload. In the present paper, we tested this hypothesis by determining experimentally how the oxidative balance and telomere length are modified when long-lived Adélie penguins (Pygoscelis adeliae) face a costly reproductive event. In agreement with the hypothesis postulating that long-lived species should prioritize their self-maintenance, Adélie penguins substantially increase their antioxidant defence when experiencing a costly breeding effort. This antioxidant adaptability was associated with no acceleration in the change of telomere length reflecting no impact on organism senescence. While previous studies have shown that long-lived species favour self-maintenance when breeding constraints increase, our study is the first to point a cellular mechanism likely to explain how this may occur, thereby confirming experimentally that the couple oxidative stress / telomere is an essential mediator of life-history strategies. |
author2 |
Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) IPEV, TAAF |
format |
Article in Journal/Newspaper |
author |
Beaulieu, Michael Reichert, Sophie Le Maho, Yvon Ancel, André Criscuolo, François |
author_facet |
Beaulieu, Michael Reichert, Sophie Le Maho, Yvon Ancel, André Criscuolo, François |
author_sort |
Beaulieu, Michael |
title |
Oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
title_short |
Oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
title_full |
Oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
title_fullStr |
Oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
title_full_unstemmed |
Oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
title_sort |
oxidative status and telomere length in a long-lived bird facing a costly reproductive event |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00540282 https://doi.org/10.1111/j.1365-2435.2010.01825.x |
genre |
Pygoscelis adeliae |
genre_facet |
Pygoscelis adeliae |
op_source |
ISSN: 0269-8463 EISSN: 1365-2435 Functional Ecology https://hal.science/hal-00540282 Functional Ecology, 2011, 25 (3), pp.577-585. ⟨10.1111/j.1365-2435.2010.01825.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2435.2010.01825.x hal-00540282 https://hal.science/hal-00540282 doi:10.1111/j.1365-2435.2010.01825.x |
op_doi |
https://doi.org/10.1111/j.1365-2435.2010.01825.x |
container_title |
Functional Ecology |
container_volume |
25 |
container_issue |
3 |
container_start_page |
577 |
op_container_end_page |
585 |
_version_ |
1798853719137189888 |