Contact Gerald Tetreault:

Phone & Address


Canadian Water Network

Canadian Rivers Institute


Ph.D. (Aquatic Toxicology) University of Waterloo, Waterloo (in progress)

M.Sc. (Aquatic Toxicology) University of Waterloo, Waterloo

B.Sc. Hon. (Biology) University of Guelph, Guelph


Gerald Tetreault

Research Technician - Ecosystem Health Assessment

CURRENT S&T / RESEARCH - Evaluating the effects of contaminants on fish populations, community structure and reproductive health of fish

  • Effects of Municipal Wastewater effluents in Canadian receiving environments
  • Adverse physiological effects of natural and synthetic hormones, and pharmaceuticals leading to endocrine disruption in wild fish
  • Field sampling to determine impacts on fish populations exposed to oil sands effluents in northern Alberta, pulp and paper effluents, and agricultural run-off
  • How does impaired fish health influence changes in the fish community structure


Served on Board of Directors for the Aquatic Toxicity Workshop (2005-2007), as well as ATW 2003 & 2006 Meeting Organizing Committee Member

Co-organized the Grand River Watershed Research Forum (2005 &2006) and member of the Grand River Conservation Authority Fisheries Management Implementation Plan Committee, Cambridge, ON

Canadian Water Network Student Executive Committee (2006)

Member of Society of Environmental Toxicology and Chemistry (SETAC) (since 1999) and SETAC Laurentian Chapter (since 2006)


Brasfield, S.M., G.R. Tetreault, C.J. Bennett, M.E. McMaster and K.R. Munkittrick. 2007. Seasonal patterns of energy storage, energy expenditure, and in vitro gonadal steroidogenic capacity in slimy sculpin (Cottus cognatus). Ecology of Freshwater Fish (in press).

Palace V, K. Wautier, R. Evans, P. Blanchfield, K. Mills, S. Chalanchuk, D. Godard, M. McMaster, G. Tetreault, L. Peters, L Vanderbyllaardt and K. Kidd. 2006. Biochemical and Histopathological Effects of Ethynylestradiol in Pearl Dace (Semotilus margarita) Exposed to the Synthetic Estrogen in a Whole Lake Experiment. Environ. Toxicol. Chem. 25(4)1114-1125.

Tetreault, G.R., M.E. McMaster, G.D. Dixon, and J.L. Parrott. 2003. Using reproductive endpoints in small forage fish species to evaluate the effects of Athabasca Oil Sands activities on the environment. Environ. Toxicol. Chem. 22(11):2775-2782.

McMaster, M.E., L.M. Hewitt, G.R. Tetreault, T. Janoscik, C. Boyko, L. Peters, J.L. Parrott, G.J. Van Der Kraak, C.B. Portt, K.J. Kroll, and N.D. Denslow. 2005. Detailed endocrine assessments of wild fish in the Northern River Basins, Alberta, in comparison to EEM monitored endpoints. Water Qual. Res. J. Canada. 40(3):299-314. No. 05-025.

Tetreault G.R., M.E. McMaster, D.G. Dixon, and J.L. Parrott. 2003. Physiological and biochemical responses of Ontario Slimy sculpin (Cottus cognatus) to sediment from the Athabasca Oil Sands Area. Wat. Qual. Res. J. of Canada. 38(2):361-377.

Expertise Categories associated with this S&T Expert:

          Pulp and paper
     Water Quality