Les trois jeûnes du manchot royal. Comparaison avec le jeûne de reproduction du manchot empereur

Protein sparing is a major factor for surviving starvation. To investigate its mechanisms, which are still largely unknown, antarctic penguins are remarkable animal models. Under natural conditions, they tolerate extremely long fasts, which facilitate the comparison of the successive phases characte...

Full description

Bibliographic Details
Main Authors: CHEREL, Yves, ROBIN, Jean-Patrice, LE MAHO, Yvon
Other Authors: CNRS, laboratoire d'études des régulations physiologiques, 23 rue Becquerel, F-67087 Strasbourg, FRA
Format: Article in Journal/Newspaper
Language:French
Published: Société nationale de protection de la nature et d'acclimatation de France, Paris (FRA) 1988
Subjects:
Jeûne alimentaire prolongé
Protéine de réserve
Catabolisme
Aves
Iles Crozet
Métabolisme
Milieu marin
Aptenodytes forsteri
Aptenodytes patagonica
Starvation
Storage protein
Catabolism
Crozet Islands
Metabolism
Marine environment
Antarctic
Empereur
Manchot
Antarc*
Online Access:http://hdl.handle.net/2042/55333
Description
Summary:Protein sparing is a major factor for surviving starvation. To investigate its mechanisms, which are still largely unknown, antarctic penguins are remarkable animal models. Under natural conditions, they tolerate extremely long fasts, which facilitate the comparison of the successive phases characterizing changes in the utilization of protein and lipid reserves . Our investigations demonstrate that the daily body mass loss per unit body mass reflects protein catabolism. The high efficiency of male Emperor penguin and King penguin chicks for protein sparing seems to be related to the large lipid reserves they store before fasting

Similar Items