Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae)
King penguins have successfully colonized cold ecosystems of the southern hemisphere by developing physiological mechanisms that are not well understood. The aim of this study was to investigate, at different integrative levels from the gene to the whole animal, the functional responses developed by...
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ftstarfr:2011LYO10348 2024-05-12T08:06:32+00:00 Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) Penguin acclimatization to polar environmental constraints : a transcriptomic and integrative study in King (Aptenodytes patagonicus) and Adélie penguins (Pygoscelis adeliae). Dégletagne, Cyril Lyon 1 Duchamp, Claude Raccurt, Mireille 2011-12-16 http://www.theses.fr/2011LYO10348/document fr fre http://www.theses.fr/2011LYO10348/document Open Access http://purl.org/eprint/accessRights/OpenAccess Puces à ADN Physiologie intégrative Métabolisme énergétique Stress oxydant Croissance Thermogenèse Manchot Royal Manchot Adélie Analyse du transcriptome Microarray Integrative physiology Metabolism Oxydative stress Growth Thermogenesis King penguin Adélie penguin Transcriptomic analysis 571.1 Electronic Thesis or Dissertation Text 2011 ftstarfr 2024-04-15T15:29:03Z King penguins have successfully colonized cold ecosystems of the southern hemisphere by developing physiological mechanisms that are not well understood. The aim of this study was to investigate, at different integrative levels from the gene to the whole animal, the functional responses developed by penguins to overcome polar constrains. We focused on acclimatization mechanisms enabling the first departure to sea of king penguin immatures and the rapid growth of Adélie penguin chicks.To explore differentially expressed genes in pectoralis muscle during penguin’s first sea acclimatization, we used Affymetrix microarrays design for chicken. We first set up and validated a new method to analyze heterologous hybridization transcriptomic profiles. We highlighted a selective shift in metabolic pathways favoring the use of lipids as fuel to sustain highly energetic needs imposed by marine life-style. Our results revealed a development of a global antioxidant response, potential consequences of penguin marine life-style that imposes repeated dives under apnea.Secondly, our integrative study on Adélie penguin’s chick revealed the development of molecular and cellular mechanisms which sustain an original strategy by first allocating most of the energy to growth and then promoting thermogenic processes.Our results showed that both king and Adélie penguins develop complex and coordinated physiological responses to energetic constraints highlighting their high phenotypic plasticity. King penguins have successfully colonized cold ecosystems of the southern hemisphere by developing physiological mechanisms that are not well understood. The aim of this study was to investigate, at different integrative levels from the gene to the whole animal, the functional responses developed by penguins to overcome polar constrains. We focused on acclimatization mechanisms enabling the first departure to sea of king penguin immatures and the rapid growth of Adélie penguin chicks.To explore differentially expressed genes in pectoralis ... Thesis King Penguins Pygoscelis adeliae theses.fr Manchot ENVELOPE(141.400,141.400,-66.817,-66.817) Manchots ENVELOPE(141.397,141.397,-66.811,-66.811) |
institution |
Open Polar |
collection |
theses.fr |
op_collection_id |
ftstarfr |
language |
French |
topic |
Puces à ADN Physiologie intégrative Métabolisme énergétique Stress oxydant Croissance Thermogenèse Manchot Royal Manchot Adélie Analyse du transcriptome Microarray Integrative physiology Metabolism Oxydative stress Growth Thermogenesis King penguin Adélie penguin Transcriptomic analysis 571.1 |
spellingShingle |
Puces à ADN Physiologie intégrative Métabolisme énergétique Stress oxydant Croissance Thermogenèse Manchot Royal Manchot Adélie Analyse du transcriptome Microarray Integrative physiology Metabolism Oxydative stress Growth Thermogenesis King penguin Adélie penguin Transcriptomic analysis 571.1 Dégletagne, Cyril Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) |
topic_facet |
Puces à ADN Physiologie intégrative Métabolisme énergétique Stress oxydant Croissance Thermogenèse Manchot Royal Manchot Adélie Analyse du transcriptome Microarray Integrative physiology Metabolism Oxydative stress Growth Thermogenesis King penguin Adélie penguin Transcriptomic analysis 571.1 |
description |
King penguins have successfully colonized cold ecosystems of the southern hemisphere by developing physiological mechanisms that are not well understood. The aim of this study was to investigate, at different integrative levels from the gene to the whole animal, the functional responses developed by penguins to overcome polar constrains. We focused on acclimatization mechanisms enabling the first departure to sea of king penguin immatures and the rapid growth of Adélie penguin chicks.To explore differentially expressed genes in pectoralis muscle during penguin’s first sea acclimatization, we used Affymetrix microarrays design for chicken. We first set up and validated a new method to analyze heterologous hybridization transcriptomic profiles. We highlighted a selective shift in metabolic pathways favoring the use of lipids as fuel to sustain highly energetic needs imposed by marine life-style. Our results revealed a development of a global antioxidant response, potential consequences of penguin marine life-style that imposes repeated dives under apnea.Secondly, our integrative study on Adélie penguin’s chick revealed the development of molecular and cellular mechanisms which sustain an original strategy by first allocating most of the energy to growth and then promoting thermogenic processes.Our results showed that both king and Adélie penguins develop complex and coordinated physiological responses to energetic constraints highlighting their high phenotypic plasticity. King penguins have successfully colonized cold ecosystems of the southern hemisphere by developing physiological mechanisms that are not well understood. The aim of this study was to investigate, at different integrative levels from the gene to the whole animal, the functional responses developed by penguins to overcome polar constrains. We focused on acclimatization mechanisms enabling the first departure to sea of king penguin immatures and the rapid growth of Adélie penguin chicks.To explore differentially expressed genes in pectoralis ... |
author2 |
Lyon 1 Duchamp, Claude Raccurt, Mireille |
format |
Thesis |
author |
Dégletagne, Cyril |
author_facet |
Dégletagne, Cyril |
author_sort |
Dégletagne, Cyril |
title |
Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) |
title_short |
Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) |
title_full |
Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) |
title_fullStr |
Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) |
title_full_unstemmed |
Acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot Royal (Aptenodytes patagonicus) et le manchot Adélie (Pygoscelis adeliae) |
title_sort |
acclimatations des manchots aux contraintes de l’environnement polaire : approches transcriptomique et intégrative sur le manchot royal (aptenodytes patagonicus) et le manchot adélie (pygoscelis adeliae) |
publishDate |
2011 |
url |
http://www.theses.fr/2011LYO10348/document |
long_lat |
ENVELOPE(141.400,141.400,-66.817,-66.817) ENVELOPE(141.397,141.397,-66.811,-66.811) |
geographic |
Manchot Manchots |
geographic_facet |
Manchot Manchots |
genre |
King Penguins Pygoscelis adeliae |
genre_facet |
King Penguins Pygoscelis adeliae |
op_relation |
http://www.theses.fr/2011LYO10348/document |
op_rights |
Open Access http://purl.org/eprint/accessRights/OpenAccess |
_version_ |
1798849027809214464 |