PSYC 116 Chapter Notes - Chapter 8: Lek Mating
Document Summary
Study with mice: m picked between 2 f, if mated with preferred f, pups had higher survivability. Found that what makes a good mate is diff for each ind. Mate-assistance hypothesis of monogamy: if resources are scarce, m may bene t from monogamy. M will help raise offspring and protect it from predators. Prairie voles, after securing a strong bond with their mate, become aggressive toward other members of the opposite sex. D1 and d2: 2 facilitated pair bonding, 1 inhibited. When d1 blocked, aggression in other f disappeared. Polygamy: either m (polygyny) or f (polyandry) have more than one mate in a given breeding season. Sequential polygamy: many short-term relationships in one season. Simultaneous polygamy: relationships at the same time. ^ chance of reproductive success for polygamous ind. M block attempts of others to mate. Sexy-son hypothesis: f receive bene ts from m in that their offspring will be desirable to the next generation of f.
