Corticosterone and Foraging Behavior in Pelagic Seabird

• Main Authors: Angelier, Frédéric, Schaffer, Scott A., Weirmerskirch, Henri, Trouve, Colette, Chastel, Olivier
• Other Authors: Centre d'Études Biologiques de Chizé (CEBC), Centre National de la Recherche Scientifique (CNRS), Department of Ecology and Evolutionary Biology, University of California Santa Cruz (UC Santa Cruz), University of California (UC)-University of California (UC)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2007
• Subjects: [SDE.BE]Environmental Sciences/Biodiversity and Ecology; [SDE.ES]Environmental Sciences/Environment and Society; Diomedea exulans
• Online Access: https://hal.science/hal-00181868

International audience Because encodrine mechanisms are thought to mediate behavioral responses to changes in the environment, examining these mechanisms is essential for understanding how long-lived seabirds adjust their foraging decisions to constrating environmental conditions in order to maximize their fitness. In this context, the hormone corticosterone (CORT) deserves specific attention because of its major connections with locomotor activities. We examined for the first time the relationships between individual CORTlevels and measurements of foraging success and behavior using satellite tracking and blood sampling fromwandering albatrosses (diomedea exulans) before (pretrip CORT levels) and after (posttrip CORT levels) foraging trips during the incubation period.