Krista L. Bush - Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9 (now with Fish and Wildlife Resources, College of Natural Resources, University of Idaho, Moscow, Idaho, 83844-1135)
Cynthia A. Paszkowski - Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9 David W. Coltman - Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E9