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Ejaculate Investment In A Promiscuous Rodent, Peromyscus Maniculatus: Effects Of Population Density And Social Role, Tristan A.F. Long, Robert Montgomerie
Ejaculate Investment In A Promiscuous Rodent, Peromyscus Maniculatus: Effects Of Population Density And Social Role, Tristan A.F. Long, Robert Montgomerie
Biology Faculty Publications
Questions: How does average male investment in ejaculates vary with changing population density (and thus with the risk of sperm competition) in a promiscuous species? Do individual male investment strategies vary with population density?
Data studied: Total testicular mass, somatic mass and annual population density for wild-caught male deer mice, Peromyscus maniculatus, collected by snap-trapping over a 23-year period in Algonquin Provincial Park, Ontario, Canada.
Search methods: We analysed the relation between mean testicular mass and mouse population densities across years. To investigate individual investment patterns, we compared the relation between total testicular mass and somatic mass among males …