Thus, there is a curvilinear relationship between age and affairs for women: affairs are low when women are both most and least reproductively valuable, but high toward the end of their reproductive years. (p.191)
As a rule, throughout the animal kingdom, the more polygynous the mating system, the greater the differences between the sexes in terms of mortality. Polygynous mating selects for males who take risks - risks in competing with other males, risks in securing the resources desired by females, and risks in exposing themselves while pursuing and courting females. (p.200)
( David M. Buss – The Evolution of Desire )
