Diet composition of the Guadalupe fur seal (Arctocephalus townsendi). Where and what do they eat?

Juan Pablo Gallo-Reynoso, Manuel Esperón-Rodríguez*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


The Guadalupe fur seal (Arctocephalus townsendi) is a specialist predator feeding on prey present in one trophic level. Data related to the diet of the Guadalupe fur seal are few. It is still unknown where most of the individuals forage or the composition of their diet. On Isla Guadalupe, the San Benito Archipelago and the Farallon Islands, fur seals primarily feed on pelagic and coastal squids. However, differences between colonies were found probably caused by differences in diversity and abundance of prey species over the continental shelf and the pelagic environment, and maybe due to the plasticity of the species in their foraging behavior. Diet composition of the Guadalupe fur seal might reflect adaptations to local and temporal environmental conditions. The aim of this work was to consider historical information, add new information, identify main prey species, and determine where in the marine regions the Guadalupe fur seals feed.

Original languageEnglish
Pages (from-to)455-467
Number of pages13
JournalMarine and Freshwater Behaviour and Physiology
Issue number6
Publication statusPublished - Nov 2013
Externally publishedYes


  • Arctocephalus townsendi
  • diet composition
  • Farallon Islands
  • fish species
  • Guadalupe fur seal
  • Isla Guadalupe
  • San Benito Archipelago
  • squid species


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