Infanticide in the meadow vole, Microtus pennsylvanicus: Significance in relation to social system and population cycling
作者： A. Bruce Webster , R. Geoffrey Gartshore , Ronald J. Brooks
DOI: 10.1016/S0163-1047(81)91394-7
关键词: Population cycle 、 Demography 、 Population 、 Developmental psychology 、 Litter (animal) 、 Harem 、 Microtus 、 Pregnancy 、 Gestation 、 Biology 、 Vole 、 Physiology
摘要: The relationship between social experience and readiness to commit infanticide was investigated in male meadow voles, Microtus pennsylvanicus . Shortly after a female gave birth, either the (stud) that had sired litter, strange recent contact with sexually mature female, or not placed her cage for 24 hr. Tendency least stud males, greatest males no females, intermediate females. Length of gestation females impregnated by about 1.5 days longer when lactating than lactating. There difference length those males. Infanticide apears be reproductive tactic and, conjunction pregnancy failure may have significant influence on population regulation this species. Dispersal affect cycles through occurrence individuals immigrate into resident populations.
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