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COSEWIC Assessment and Update Status Report on the Aurora Trout in Canada


The Aurora Trout restoration program is financed and conducted by the Ontario Ministry of Natural Resources. Support for the water quality monitoring program has been maintained by the Ontario Ministry of the Environment with additional support in recent years from Al Dextrase through the Ontario Ministry of Natural Resources. Additional financial support during the period 1992-1994 was provided by the Endangered Species Recovery fund, cosponsored by World Wildlife Fund, Canada, and the Canadian Wildlife Service of Environment Canada. We thank Al Dextrase and the Aurora Trout management committee, in particular Craig Jessop, Ron Ward, Chuck McCrudden, Linda Melnyk‑Ferguson, and Peter Davis for helpful comments on an earlier draft of this report.

Literature Cited

Beggs, G.L., and J.M. Gunn. 1986. Response of Lake Trout (Salvelinus namaycush) and Brook Trout (S. fontinalis) to surface water acidification in Ontario. Water, Air, and Soil Pollution 30: 711-718.

Behnke, R.J. 1980. A systematic review of the genus Salvelinus. Pages 441-479 in E.K. Balon, editor. Charrs: Salmonid fishes of the genus Salvelinus. Dr. W. Junk, The Hague, The Netherlands.

Dixit, A.S., S.S. Dixit, and J.P. Smol.1996. Long-term trends in limnological characteristics in the Aurora Trout lakes, Sudbury, Canada. Hydrobiologia 335: 171-181.

Fraser, J.M. 1978. The effect of competition with yellow perch on the survival and growth of planted brook trout, splake and rainbow trout in a small Ontario lake. Transactions of the American Fisheries Society 107: 505-517.

Grewe, P.M., N. Billington, and P.D.N. Hebert. 1990. Phylogenetic relationships among members of Salvelinus inferred from mitrochondrial DNA divergence. Canadian Journal of Fisheries and Aquatic Sciences 47: 984-991.

Henn, A.W., and W.H. Rickenbach. 1925. Description of the Aurora Trout (Salvelinus timagamiensis), a new species from Ontario. Annals of the Carnegie Museum 16: 131-141.

Keller, W. 1978. Limnological observations on the Aurora Trout lakes. Technical report. Ontario Ministry of the Environment, Sudbury, Ontario, Canada.

Martin, W. 1939. The arctic char of North America. M.A. thesis. University of Toronto, Toronto, Canada.

McGlade, J.M. 1981. Genotypic and phenotypic variation in the Brook Trout, Salvelinus fontinalis (Mitchell) Ph. D. thesis. University of Guelph, Guelph, Canada.

Neary, B.P., P.J. Dillon, J.R. Munro, and B.J. Clark. 1990. The acidification of Ontario lakes: an assessment of their sensitivity and current status with respect to biological damage. Technical report. Ontario Ministry of the Environment, Toronto.

Noakes, D.L.G., and R.A. Curry. 1995. Lessons to be learned from attempts to restore Salvelinus species other than S. namaycush: a review of reproductive behaviour. Journal of Great Lakes Research 21 (Supplement 1): 54-64.

Parker, B.J., and C. Brousseau. 1988. Status of the Aurora Trout, Salvelinus fontinalis timagamiensis, a distinct stock endemic to Canada. Canadian Field-Naturalist 102: 87-91.

Patrick, N.D., and P. Graf. 1961. The effect of temperature on the artificial culture of Aurora Trout. The Canadian Fish Culturist 30: 49-55.

Power, G. 1980. The Brook charr, Salvelinus fontinalis. Pages 141-203 in E.K. Balon, editor. Charrs: Salmonid fishes of the genus Salvelinus. Dr. W. Junk, The Hague, The Netherlands.

Qadri, S.U. 1968. Morphology and taxonomy of the Aurora char, Salvelinus fontinalis timagamiensis. National Museums of Canada Contributions to Zoology 5: 1-18.

Sale, P.F. 1962. A note on the lethal temperature of the aurora trout, Salvelinus timagamiensis. Canadian Journal of Zoology 40: 367-369.

Sale, P.F. 1964. Ecology and taxonomy of the Aurora Trout. M.A. thesis. University of Toronto, Toronto, Canada.

Sale, P.F. 1967. A re-examination of the taxonomic position of the Aurora Trout. Canadian Journal of Zoology 45: 215-225.

Schindler, D.W. 1998. A dim future for boreal waters and landscapes. Bioscience 48: 157-164.

Scott, W.B., and E.J. Crossman. 1973. Freshwater fishes of Canada. Fisheries Research Board of Canada Bulletin 184: 1-966.

Snucins, E.J., V.A. Liimatainen, and P.A. Gale. 1988. Effect of acidic lake water on survival of Aurora Trout (Salvelinus fontinalis) embryos and alevins. Ontario Fisheries Acidification Report Series no. 88-15. Ontario Ministry of Natural Resources, Toronto.

Snucins, E.J., J.M. Gunn, and W. Keller. 1995. Restoration of the Aurora Trout to its acid-damaged native habitat. Conservation Biology 9: 1307-1311.

Vladykov, V.D. 1954. Taxonomic characters of the eastern North American chars (Salvelinus and Cristivomer). Journal of the Fisheries Research Board of Canada 11: 904-932.

Vladykov, V.D. 1956. Fecundity of wild speckled Trout (Salvelinus fontinalis) in Quebec lakes. Journal of the Fisheries Research Board of Canada 13: 799-841.

The Authors

Ed Snucins

Academic training as a fisheries biologist with degrees from Guelph (B.Sc. 1983) and Trent (M. Sc. 1989) universities. Lake Rehabilitation Biologist with the Cooperative Freshwater Ecology Unit at Laurentian University in Sudbury since 1989. Areas of research include monitoring natural biological and chemical recovery of acidified lakes and developing methods for reintroducing extirpated species. Involved with the Aurora Trout restoration program since 1985 and a member of the Aurora Trout Management Committee since 1989.

John Gunn

Senior scientist with the Ontario Ministry of Natural Resources and founding director of the Cooperative Freshwater Ecology Unit at Laurentian University in Sudbury, Ontario. The Co-op unit mandate is to conduct research in the area of restoration ecology of industrially damaged ecosystems. The unit also has an environmental science training role and extensive public education programs. Academic training is as a fisheries biologist and aquatic ecology with degrees from Mt. Allison (B.Sc. 1973), Ottawa (M.Sc. 1976) and Guelph (Ph.D. 1987) universities.  Has published more than 50 journal papers and edited a major book on restoration ecology and ecosytem management. Currently holds a 5 year NSERC Industrial grant with Dr. Norman Yan for the study of "Climate Change, Ultraviolet Light and the Recovery of Acidified Lakes". Received the Excellence in Research Award from the Ontario Ministry of Environment in 1988, the Guelph University Alumni Achievement Medal in 1993, and the Ontario Amethyst Award in 1996 for international contribution to acid rain research.

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