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Foraging Behavior And Energetics Of Albatrosses In Contrasting Breeding Environments, Michelle Antolos, Scott Shaffer, Henri Weimerskirch, Yann Tremblay, Daniel Costa
Foraging Behavior And Energetics Of Albatrosses In Contrasting Breeding Environments, Michelle Antolos, Scott Shaffer, Henri Weimerskirch, Yann Tremblay, Daniel Costa
Faculty Publications, Biological Sciences
Animals can maximize fitness by optimizing energy acquisition through the selection of favorable foraging habitats, but trade-offs exist between time spent in preferred feeding habitats, energetic costs of travel, and reproductive constraints. For pelagic seabirds, geographic distribution of suitable breeding islands can restrict access to marine prey resources and influence foraging strategies. Laysan (Phoebastria immutabilis) and black-footed albatrosses (P. nigripes) breeding in the Northwest Hawaiian Islands, and Indian yellow-nosed albatrosses (Thalassarche carteri) breeding in the Southern Indian Ocean, utilize productive subtropical-subpolar transition zones during their breeding and non-breeding periods, but this marine feature is at a comparatively greater distance for …
Reproductive Constraints Influence Habitat Accessibility, Segregation, And Preference Of Sympatric Albatross Species, Michelle Kappes, Scott Shaffer, Yann Tremblay, David Foley, Daniel Palacios, Steven Bograd, Daniel Costa
Reproductive Constraints Influence Habitat Accessibility, Segregation, And Preference Of Sympatric Albatross Species, Michelle Kappes, Scott Shaffer, Yann Tremblay, David Foley, Daniel Palacios, Steven Bograd, Daniel Costa
Faculty Publications, Biological Sciences
The spatiotemporal distribution of animals is dependent on a suite of factors, including the distribution of resources, interactions within and between species, physiological limitations, and requirements for reproduction, dispersal, or migration. During breeding, reproductive constraints play a major role in the distribution and behavior of central place foragers, such as pelagic seabirds. We examined the foraging behavior and marine habitat selection of Laysan (Phoebastria immutabilis) and black-footed (P. nigripes) albatrosses throughout their eight month breeding cycle at Tern Island, Northwest Hawaiian Islands to evaluate how variable constraints of breeding influenced habitat availability and foraging decisions. We used satellite tracking and …