Sagar M. Goyal L. David Mech 2011 We examined 35 years of relationships among wolf (<i>Canis lupus</i>) pup survival, population change and canine parvovirus (CPV) seroprevalence in Northeastern Minnesota to determine when CPV exerted its strongest effects. Using correlation analysis of data from five periods of 7-years each from 1973 through 2007, we learned that the strongest effect of CPV on pup survival (<i>r</i> = -0.73) and on wolf population change (<i>r</i> = -0.92) was during 1987 to 1993. After that, little effect was documented despite a mean CPV seroprevalence from 1994 of 2007 of 70.8% compared with 52.6% during 1987 to 1993. We conclude that after CPV became endemic and produced its peak effect on the study population, that population developed enough immunity to withstand the disease. application/pdf 10.5897/JVMAH.9000018 en Academic Journals Parsing demographic effects of canine parvovirus on a Minnesota wolf population article