Biological Sciences

Ernest Keeley, Ph.D.

Ernest Keeley

Professor of Biological Sciences

Fish Ecology Lab Homepage


Biographical Sketch

I am broadly interested in the behavior, ecology, and conservation of freshwater fishes, with an emphasis on salmon, trout and char species. My students and I have focused on examining how space use and territoriality may act as a mechanism limiting the density of salmonid fish in streams. In addition, my lab has been interested in defining conservation units by examining ecotypic variation of salmonid fishes. Idaho State University offers an ideal location for access to many research sites throughout the intermountain west as well as western Canada. In conjunction with many field projects, laboratory experiments focusing on competition, bioenergetics, and swimming ability are also conducted by my students and me. For more information about projects and students working in my lab, go to the Fish Ecology Homepage.


Selected Publications

Seiler, S.M. and Keeley, E.R. 2007. A comparison of aggressive and foraging behaviour between juvenile cutthroat trout, rainbow trout, and F1 hybrids. Animal Behaviour, in press.

Gunnell, K.,, Tada, M.K., Hawthorne, F.A., Keeley, E.R. and Ptacek, M.B. 2007. Geographic patterns of introgressive hybridization between native Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and introduced rainbow trout (O. mykiss) in the South Fork of the Snake River watershed, Idaho. Conservation Genetics, in press.

Seiler, S.M. and Keeley, E.R. 2007. Morphological and swimming stamina differences between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri), rainbow trout (Oncorhynchus mykiss), and their hybrids. Canadian Journal of Fisheries and Aquatic Sciences 64:127-135.

Keeley, E.R., Parkinson, E.A., and Taylor, E.B. 2006. The origins of ecotypic variation of rainbow trout (Oncorhynchus mykiss): an experimental assessment of environmental versus genetically based differences in morphology. Journal of Evolutionary Biology, 20:725-736.

Keeley, E.R., E.A. Parkinson, and E.B. Taylor 2005. Ecotypic differentiation of native rainbow trout (Oncorhynchus mykiss) populations from British Columbia. Canadian Journal of Fisheries and Aquatic Sciences, 62:1523-1539.

Imre, I, Grant, J.W.A., and Keeley, E.R. 2004. The effect of food abundance on territory size and population density of juvenile steelhead trout (Oncorhynchus mykiss). Oecologia, 138:371-378.

Rodnick, K.J., Gamperl, A,K., Lizars, K.R., Bennett, M.T., Rausch, R.N., Keeley, E.R. 2004. Thermal tolerance and metabolic physiology among redband trout populations in south-eastern Oregon. Journal of Fish Biology, 64: 10-335.

Keeley, E.R. 2003. An experimental analysis of self-thinning in juvenile steelhead trout. Oikos, 102:543-550.

Gamperl, A.K., Rodnick, K.J., Faust, H.A., Venn, E.C., Bennett, M.T., Crawshaw, L.I., Keeley, E.R., Powell, M.S., Li, H.W., 2002. Metabolism, swimming performance, and tissue biochemistry of high desert redband trout (Oncorhynchus mykiss ssp.): evidence for phenotypic differences in physiological function. Physiological and Biochemical Zoology 75:413-431.

Imre, I., Grant, J.W.A. and Keeley, E.R. 2002. The effect of visual isolation on territory size and population density of juvenile rainbow trout (Oncorhynchus mykiss). Canadian Journal of Fisheries and Aquatic Sciences, 59:303-309.


921 South 8th Avenue
Pocatello, Idaho, 83209