TY - JOUR A1 - Hanson, J.M. A1 - MacKay, W.C. A1 - Prepas, E.E. T1 - Effect of size-selective predation by muskrats (Ondatra zebithicus) on a population of unionid clams (Anodonta grandis simpsonianus) Y1 - 1989 DO - 10.2307/4983 JF - Journal of Animal Ecology VL - 58 IS - 1 SP - 15 EP - -28 ER -