Écologie alimentaire comparée des manchots nicheurs aux Îles Crozet

• Main Authors: RIDOUX, V., JOUVENTIN, P., STAHL, Jean-Claude, WEIMERSKIRCH, H.
• Other Authors: CNRS UA 711, Université Bretagne occidentale, Laboratoire Océanographie Biologique, 6 avenue Le Gorgeu, 29287 Brest Cedex, FRA, CEBAS-CNRS, Villiers-en-Bois, F-79360 Beauvoir/Niort,FRA, National Museum of New-Zealand, Private Bag, Wellington, Nouvelle-Zélande,NZL
• Format: Article in Journal/Newspaper
• Language: French
• Published: Société nationale de protection de la nature et d'acclimatation de France, Paris (FRA) 1988
• Subjects: Cycle reproducteur; Régime alimentaire; Compétition alimentaire; Aire déplacement; Iles Crozet; Milieu marin; Partage ressource; Pygoscelis papua; Aptenodytes patagonica; Eudyptes chrysolophus; Eudyptes chrysocome; Reproductive cycle; Diet; Competitive feeding; Home range; Crozet Islands; Marine environment; Resource sharing; Indian; Manchots; Scotia Sea; Gentoo penguin; Îles Crozet; Macaroni penguin; Rockhopper penguin
• Online Access: http://hdl.handle.net/2042/55331

Four species of penguins breed on Crozet Islands, Southern Indian Ocean . Their sizes, diving abilities, breeding cycles, feeding frequencies, foraging ranges, and diets are compared. The King penguin has a well individualized niche, characterized by long foraging trips, wide depth range, and extensive predation on Myctophiid fishes . The Macaroni penguin and the Rockhopper penguin have very similar feeding strategies, but might differ in their feeding ranges and diving depths . The Gentoo penguin, whose nearest ecological relatives are the Eudyptid penguins, is a coastal predator. Contrary to what is the rule in the Scotia Sea area where krill is abundant, the gentoo penguins of the Crozet Archipelago breed in winter, and change their diet in late spring when Eudyptid penguins come back to their breeding colonies