Skip to main content
Article thumbnail
Location of Repository

An energy–distance trade-off in a central-place forager, the Antarctic fur seal (Arctocephalus gazella)

By I.J. Staniland, K. Reid and I.L. Boyd

Abstract

We tested the prediction that lactating fur seals (Arctocephalus gazella) at South Georgia will take prey of greater energy density with increasing distance of foraging from the colony. The study investigated the differences in diet of fur seals foraging within two regions, one near the breeding colony and the other at greater distance. Diet varied significantly in relation to foraging location. Dietary items of low quality were eaten in both regions but more food items with a high-energy content appeared in the diet of seals travelling to distant oceanic waters. We conclude that there is likely to be a trade-off between energy gain and distance travelled which enables female fur seals to maintain a relatively constant rate of energy delivery to their offspring irrespective of the distance travelled to find food. \u

Topics: Marine Sciences, Zoology, Ecology and Environment
Publisher: Springer
Year: 2007
DOI identifier: 10.1007/s00227-007-0698-9
OAI identifier: oai:nora.nerc.ac.uk:5966
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://dx.doi.org/10.1007/s002... (external link)
  • https://doi.org/10.1007/s00227... (external link)
  • https://doi.org/10.1007/s00227... (external link)
  • http://nora.nerc.ac.uk/id/epri... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.