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First report and characterization of adult Uncinaria spp. in New Zealand Sea Lion (Phocarctos hookeri) pups from the Auckland Islands, New Zealand

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Abstract

Two species of hookworms (Uncinaria lucasi and Uncinaria hamiltoni) have been formally described from pinnipeds, but dissimilar types are noted from these hosts. This report is the first description of hookworms (Uncinaria spp.) from the New Zealand sea lion, Phocarctos hookeri. The nematodes were collected from dead pups on Enderby Island (Auckland Islands, 50°30', 166°17') during January and February, 2004. Standard measurements of male and female hookworms were obtained, providing a general morphometric characterization of the hookworm species in P. hookeri. Considerable variations in the body length of adult hookworms were noted within the same host. The arrangement of some of the bursal rays differs from that described for U. lucasi and U. hamiltoni.

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Acknowledgements

The authors are thankful to Nadine Gibbs, Barbara Adlington and Anne Tunnicliffe for helping with the collection of specimens, Doug Hopcroft for assisting with the SEM and Nicolas Lopez-Villalobos for advice on statistics. Approval for this work was obtained from the New Zealand Department of Conservation (DOC). This study was partly funded by the Institute of Veterinary, Animal and Biomedical Sciences (Massey University, Palmerston North, New Zealand), the Novartis Animal Health Research Scholarship in Veterinary Parasitology, the Joan Berry Fellowships in Veterinary Science Scholarship, and by the DOC.

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Authors and Affiliations

  1. New Zealand Wildlife Health Centre, Institute of Veterinary, Animal and Biomedical Science, Massey University, Private Bag 11222, Palmerston North, New Zealand

    A. Castinel, P. J. Duignan & W. E. Pomroy

  2. Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY, 40546-0099, USA

    E. T. Lyons

  3. Department of Nematology, University of California, One Shields Ave., Davis, CA, 95616, USA

    S. A. Nadler

  4. The Marine Mammal Center, Marin Headlands, Sausalito, CA, 94065, USA

    M. D. Dailey

  5. Marine Conservation Unit, Department of Conservation, P.O. Box 10-420, Wellington, New Zealand

    I. S. Wilkinson & B. L. Chilvers

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  1. A. Castinel
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  2. P. J. Duignan
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  3. W. E. Pomroy
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  4. E. T. Lyons
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  5. S. A. Nadler
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  6. M. D. Dailey
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  7. I. S. Wilkinson
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  8. B. L. Chilvers
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Correspondence to A. Castinel.

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Castinel, A., Duignan, P.J., Pomroy, W.E. et al. First report and characterization of adult Uncinaria spp. in New Zealand Sea Lion (Phocarctos hookeri) pups from the Auckland Islands, New Zealand. Parasitol Res 98, 304–309 (2006). https://doi.org/10.1007/s00436-005-0069-8

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  • DOI: https://doi.org/10.1007/s00436-005-0069-8

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