Picture of  David Janz

David Janz Professor, Department of Veterinary Biomedical Sciences

Research Area(s)

  • Interactions between physiological control and environmental alteration of developmental and reproductive processes in vertebrates

Academic Credentials

  • BSc, Simon Fraser University
  • MSc, Trent University
  • PhD, University of British Columbia
  • Post-Doctoral training, University of Guelph

Research Interests

Dr. Janz investigates interactions between physiological control and environmental alteration of developmental and reproductive processes in vertebrates.

The goal is to investigate relationships between biological responses at the molecular and cellular levels with those occurring at the organ, organism and population levels in animals exposed to environmental stressors. This is achieved by combining physiological, cell biological, pharmacological and molecular biological approaches in the laboratory with ecological approaches in the field.

Dr. Janz's recent work has focused on developing non-invasive techniques to measure long-term stress in fish and wildlife species.


Thomas, J.K. and D.M. Janz. 2015. Developmental and persistent toxicities of maternally deposited selenomethionine in zebrafish (Danio rerio). Environmental Science and Technology 49, 10182-10189.

Janz, D.M., K. Liber, I.J. Pickering, C.I.E. Wiramanaden, S.A. Weech, M. Gallego-Gallegos, M.K. Driessnack, E.D. Franz, M.M. Goertzen, J. Phibbs, J.J. Tse, K.T. Himbeault, E.L. Robertson, C. Burnett-Seidel, K. England and A. Gent. 2014. Integrative assessment of selenium speciation, biogeochemistry, and distribution in a northern coldwater ecosystem. Integrated Environmental Assessment and Management 10, 543-554.

Cattet, M.R.L., B.J. Macbeth, D.M. Janz, A. Zedrosser, J.E. Swenson, M. Dumond and G.B. Stenhouse. 2014. Quantifying long-term stress in brown bears with the hair cortisol concentration: a biomarker that may be confounded by rapid changes in response to capture and handling. Conservation Physiology 2, doi:10.1093/conphys/cou026.

Thomas, J.K. and D.M. Janz. 2014. In ovo exposure to selenomethionine via maternal transfer increases developmental toxicities and impairs swim performance in F1 generation zebrafish (Danio rerio). Aquatic Toxicology 152, 20-19.

Bourbonnais, M.L., T.A. Nelson, M.R.L. Cattet, C.T. Darimont, G.B. Stenhouse and D.M. Janz. 2014. Environmental factors and habitat use influence body condition of individuals in a species at risk, the grizzly bear. Conservation Physiology 2, doi10.1093/conphys/cou043.

Janz, D.M. 2012. Selenium. Pp. 327-374 In: C.W. Wood, A.P. Farrell and C.J. Brauner (Eds.) Fish Physiology Vol 31A, Homeostasis and Toxicology of Essential Metals. Elsevier, San Diego, CA.

Macbeth, B.J., M.R.L. Cattet, G.B. Stenhouse, M.L. Gibeau and D.M. Janz. 2010. Hair cortisol concentration as a noninvasive measure of long-term stress in free-ranging grizzly bears (Ursus arctos): Considerations and implications for other wildlife. Canadian Journal of Zoology 88, 935-949.

Janz, D.M., D.K. DeForest, M.L. Brooks, P.M. Chapman, G. Gilron, D. Hoff, W.D. Hopkins, D.O. McIntyre, C.A. Mebane, V.P. Palace, J.P. Skorupa and M. Wayland. 2010. Selenium toxicity to aquatic organisms. Pp. 141-231 In: P.M. Chapman, W.J. Adams, M.L. Brooks, C.G. Delos, S.N. Luoma, W.A. Maher, H.M. Ohlendorf, T.S. Presser and D.P. Shaw (Eds.) Ecological Assessment of Selenium in the Aquatic Environment. CRC Press, Boca Raton, FL.