• Acronyme :
    PHYSIONERGIE
  • Référence :
    131
  • Domaine de recherche :
    Sciences du vivant
  • Région :
    Subantarctique, Antarctique, Crozet, Dumont d'Urville
  • Responsable du projet :
    Roussel Damien

Energetic challenges in penguins: Physiological, Bioenergetics and Molecular Adjustments

Our research program PHYSIONERGY is devoted to the study of the physiological, bioenergetics and molecular adjustments that sub-Antarctic and Antarctic penguin chicks and juveniles (Aptenodytes patagonicus and Pygoscelis adeliae) develop to overcome energetic challenges imposed by their ashore and sea living stages. These challenges are characterized by short growth period in cold environment, long-term fast during winter or moulting, the passage from shore to marine life to reach nutritional emancipation, the production of visual cues as an indicator to partners of individuals « quality » on vital aspects of organismic function. Penguin is an extraordinary model to study on the same specie several bioenergetics trade-off between expansive energy consuming processes (endurance, thermoregulation, protein synthesis, ornamental colors) and limited environmental resources (oxygen during dives, nutriment while fasting during winter or molt, carotenoids).