University of Saskatchewan

Western College of Veterinary Medicine

Polley, Lydden

Professor Emeritus
Veterinary Microbiology

Research Interests

Lydden was the 2011 recipient of the World Association for the Advancement of Veterinary Parasitology (WAAVP) – Bayer Award for Excellence in Teaching. This award has been given only four times since its establishment in 1993. He is also Co-editor, with Andrew Thompson of Murdoch University in Western Australia, of the open access journal International Journal of Parasitology: Parasites and Wildlife (IJP:PAW), published by Elsevier for the Australian Society for Parasitology.


Since 2005:

Hoopes, J.H., Polley, L., Wagner, B., Jenkins, E.J. 2013, “A retrospective investigation of feline gastrointestinal parasites in western Canada.” Can Vet J, 54: 359-362.

Jenkins, E.J., Castrodale, L.J., de Rosemond, S.J.C., Dixon, B.R., Elmore, S.A., Gesy, K.M., Hoberg, E.P., Polley, L., Schurer, J.M., Simard, M., Thompson, R.C.A. 2013. “Tradition and Transition: Parasitic Zoonoses of people and Animals in Northern Canada, Alaska, and Greenland.” Adv Parasitol, 82: 33-204 (Invited Review)*

Hoberg, E.P., Galbreath, K.E., Cook, J.A., Kutz, S.J., Polley, L., 2012. "Northern Host-Parasite Assemblages: History and Biogeography on the Borderlands of Episodic Climate and Environmental Transition." Adv Parasitol, 79: 1-97 (Invited Review)*

Kutz, S.J., Ducrocq, J., Verocai, G.G., Hoar, B.M., Colwell, D.D., Beckman, K.B., Polley, L., Elkin, B.T., Hoberg, E.P., 2012. "Parasites in Ungulates of Arctic North America and Greenland: A View of Contemporary Diversity, Ecology, and Impact in a World under Change." Adv Parasitol, 79: 99-252 (Invited Review)

Elmore, S.A., Jenkins, E.J., Huyvaert, K.P., Polley, L., Root, J.J., Moore, C.G., 2012. "Toxoplasma gondii in Circumpolar Wildlife and People." Vector-Borne Zoonotic Dis, 12: 1-9. 

Jenkins, E., Peregrine, A., Hill, J., Somers, C., Gesy, K., Barnes, B., Gottstein, B., Polley, L., 2012. "Detection of a European Strain of Echinococcus multilocularis is North America." Emerg Infect Dis, 18: 1010-1012.

Peregrine, A.S., Jenkins, E.J., Barnes, B., Johnson S., Polley, L., Barker, I.K., De Wolf, B., Gottstein, B., 2012. "Alveolar Hydatid Disease (Echinococcus multilocularis) in the Liver of a Canadian Dog in British Columbia, a Newly Endemic Area." Can Vet J, 53: 870-87

Polley, L., Kutz, S.J., Hoberg, E.P., 2011. Parasite zoonoses, in Encyclopedia of Environmental Health, Five Volume Set (Nriagu, N., ed.) Oxford, Elsevier, 4: 325-345 (invited chapter).

Polley, L, Veterinary Helminthology, in Animal and Plant Productivity, [Robert J. Hudson, ed.], in Encyclopedia of Life Support Systems (EOLSS), 2009. Developed under the Auspices of the UNESCO, EOLSS Publishers, Oxford, UK, [] 21pp plus 5 figures and 5 tables.

Kutz, SJ, Thompson, RCA, and Polley, L, 2009. Wildlife with Giardia: Villain or Victim and Vector? (invited chapter) Giardia and Cryptosporidium: From Molecules to Disease. [Ortega-Pierres MG, et al., eds.] CAB International, 2009.         

Kutz SJ, Jenkins EJ, Veitch AM, Ducrocq J, Polley L, Elkin B, Lair S, 2009.  The Arctic as a model for anticipating, preventing, and mitigating climate change impacts on host-parasite interactions.  Vet Parasitol, 163(3):217-28.

Polley L, Thompson RC, 2009.  Parasite zoonoses and climate change: molecular tools for tracking shifting boundaries.  Trends Parasitol, 25(6):285-91.

Hoberg EP, Polley L, Jenkins EJ, Kutz SJ, 2008.  Pathogens of domestic and free-ranging ungulates: global climate change in temperate to boreal latitudes across North America.  OIE Rev Sci Tech, 27(2):511-28.

Kutz SJ, Thompson RA, Polley L, Kandola K, Nagy J, Wielinga CM, Elkin BT, 2008.  Giardia assemblage A: human genotype in muskoxen in the Canadian Arctic.  Parasit Vectors, 1(1):32-35.

Hoberg, E.P., Polley, L., Jenkins, E.J., Kutz, S.J., Veitch, A., and Elkin, B., 2008. Integrated Approaches and Empirical Models for Investigation of Parasitic Diseases in Northern Wildlife. Emerg Inf Dis, 14: 10-17 (included in a special section for International Polar Year on the influence of events in polar regions on global disease emergence).

Kutz, S.J., Asmundsson, I., Hoberg, E.P., Appleyard, G.D., Jenkins, E.J., Beckmen, K., Branigan, M., Butler, L., Chilton, N.B., Cooley, D., Elkin, B., Huby-Chilton, F., Johnson, D., Kuchboev, A., Nagy, J., Oakley, M., Polley, L., Popko, R., Scheer, A., Simard, M., and  Veitch, A., 2007. Serendipitous Discovery of a Novel Protostrongylid (Nematoda: Metastrongyloidae) in Caribou (Rangifer tarandus), Muskox (Ovibos moschatus), and Moose (Alces americanus) from high latitudes of North America Based on DNA Sequence. Canadian Journal of Zoology, 85:1143-1156.

Parchoma, G., Taylor, S. M., Naylor, J.M., Abutarbush, S.M., Lohmann, K., Schwarz, K., Waldner, C., Porterfield, S., Schmon, C. L., Polley, L., & Clark, C., 2006.  Integrating human-computer interaction in veterinary medicine curricula.  In E. MacKay (Ed.), Enhancing Learning through Human-Computer Interaction. Idea Group: Hershey, PA. (In press, June 2006)

Jenkins, E.J., Veitch, A.M., Kutz, S.J., Bollinger, T.K., Chirino-Trejo, J.M., Elkin, B.T., West, K.H., Hoberg, E.P., Polley, L.R., 2007.  Protostrongylid parasites and pneumonia in captive and wild thinhorn sheep (Ovis dalli).  Journal of Wildlife Diseases, 43(2): 189-205.

Jenkins, E.J., Kutz, S.J., Hoberg, E.P. and Polley, L., 2006.  Bionomics of larvae of Parelaphostrongylus odocoilei (Nematoda: Protostrongylidae) in experimentally-infected gastropod intermediate hosts.  Journal of Parasitology, 92: 298-305.

Jenkins, E.J., A.M. Veitch, S.J. Kutz, E.P. Hoberg, and L. Polley, 2006.  Climate change and the epidemiology of protostrongylid nematodes in northern ecosystems: Parelaphostrongylus odocoilei and Protostrongylus stilesi in Dall's sheep (Ovis d. dalli).  Parasitology, 132: 387-401.

Kutz, S.J., E.P. Hoberg, L. Polley, and E.J. Jenkins, 2005.  Global warming is changing the dynamics of arctic host-parasite systems.  Proceedings of the Royal Society of London, Series B, Biological Sciences 272: 2571-2576.

Jenkins, E.J., E.P. Hoberg, and L. Polley, 2005.  Development and pathogenesis of Parelaphostrongylus odocoilei (Nematoda: Protostrongylidae) in experimentally infected thinhorn sheep (Ovis dalli).  Journal of Wildlife Diseases, 41: 669-682. (A figure from this paper was used for the journal cover.)

Hoberg, E.P., E.J. Jenkins, B. Rosenthal, M. Wong, E. Erbe, S.J. Kutz, and L. Polley, 2005.  Caudal polymorphism and cephalic morphology among first-stage larvae of Parelaphostrongylus odocoilei (Protostrongylidae: Elaphostrongylinae) in Dall’s sheep from the Mackenzie Mountains, Canada.  Journal of Parasitology, 91: 1318-1325.  (A figure from this paper was used for the journal cover.)

Jenkins, E. J., G.D. Appleyard, E. P. Hoberg, B. M. Rosenthal, S.J. Kutz, A. M. Veitch, H. M. Schwantje, B. T. Elkin, and L. Polley.  2005.  Geographic distribution of the muscle-dwelling nematode Parelaphostrongylus odocoilei in North America, using molecular identification of first-stage larvae. Journal of Parasitology, 91, 574-584.

Polley, L., 2005.  Navigating parasite webs and parasite flow: emerging and re-emerging parasitic zoonoses of wildlife origin.  International Journal for Parasitology, 35: 1279-1294.  (Invited review in a thematic issue of the journal: Parasitic Zoonoses – Emerging Issues.)