ANT203H5 Lecture Notes - Lecture 5: Estrous Cycle, Social Grooming, Bonobo
Document Summary
Dominance hierarchy: ranking system indicating which individuals dominate the group. Reduces amount of physical violence, use of dominance gestures. Dominance benefit for males: increased reproductive success of high-ranking animals. Dominance benefit for females: greater access to food and higher reproductive success. An individual"s rank will change throughout life and is influenced by: Reduces amount of physical violence, use of dominance. Interplay between agnostic (submissive or aggressive) behaviour and affiliative (friendly) behaviour. Conflict from resource competition - mates and food. Infanticide: (usually) males kill infants fathered by other males. Described in several primate species, such as langurs, colobus, guenons, howler monkeys, and chimps. Typically happens after males take over a new troop, or after a change in dominance hierarchy. Takeovers from males from bachelor groups and infanticide happens. Mostly male dominant, but some groups (i. e. lemurs) female. Typically happens after males take over a new troop, or infanticide happens.
