title: Infanticide in microtines: Importance in natural populations.
abstract: To test the hypothesis that the incidence of infanticide should increase as population density increases in microtines (Mallory and Brooks, 1978), an index of pregnancy success was developed. There was no negative correlation between population density and pregnancy success in four species of Microtus and thus the hypothesis is refuted. There was a positive correlation between instantaneous growth rate and pregnancy success in M. pennsylvanicus and M. townsendii.
authors.affiliation: Department of Zoology, Scarborough College, University of Toronto, M1C 1A4, West Hill, Ontario, Canada.
authors.forename: Rudy
authors.initials: R
authors.lastname: Boonstra