Russian Journal of Marine Biology

, Volume 45, Issue 5, pp 393–396 | Cite as

A Study of Uncinariasis in Northern Fur Seal Pups, Callorhinus ursinus, on the Rookeries of Bering Island, 2011–2012

  • S. V. FominEmail author
  • L. I. Konovalova
  • O. A. Belonovich
  • R. L. DeLong
  • T. R. Spraker


Carcasses of northern fur seal pups, Callorhinus ursinus, collected from the rookeries of Bering Island (n = 133), were examined for hookworms Uncinaria spp. The parasite was found in 90% of the pups from the Severo-Zapadnoe rookery and in 45% of the pups from the Severnoe rookery. This difference in prevalence of nematode infection between the rookeries is associated with the type of substrate, as well as with the pattern of distribution of the seal reproductive groups on each of the rookeries.


uncinariasis helminths northern fur seal rookery Bering Island 



We are grateful to V.V. Fomin, V.S. Nikulin, and many other colleagues who assisted our work. Special thanks are due to V.N. Burkanov, without whose efforts this study would not have been possible. We also thank the Kamchatka Branch, Pacific Geographical Institute, Far East Branch, Russian Academy of Sciences, as well as the Marine Mammal Laboratory, Seattle, United States, for their kind help in the preparation and implementation of the study.


Conflict of interests. The authors declare that they have no conflict of interest.

Statement on the welfare of animals. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • S. V. Fomin
    • 1
    Email author
  • L. I. Konovalova
    • 2
  • O. A. Belonovich
    • 3
  • R. L. DeLong
    • 4
  • T. R. Spraker
    • 5
  1. 1.Kamchatka Branch, Pacific Geographical Institute, Far East Branch, Russian Academy of SciencesPetropavlovsk-KamchatskyRussia
  2. 2.Vyatka State Agricultural AcademyKirovRussia
  3. 3.Kamchatka Branch, Russian Federal Research Institute of Fisheries and Oceanography (KamchatNIRO)Petropavlovsk-KamchatskyRussia
  4. 4.Marine Mammal Laboratory, Alaska Fisheries Science CenterSeattleUnited States
  5. 5.Colorado State University, Fort CollinsColoradoUnited States

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