It is suggested that these alliances were made possible by relaxed feeding competition, that they were favored through their effect on reducing sexual coercion, and that they are ultimately responsible for the relaxed social conditions that allowed the evolution of communication sex. A scenario for the evolution of bonobo hypersexuality is offered. Social interactions and the life history of female Pan paniscus in Wamba, Zaire. The unit-group of Pan paniscus tends to form one large mixed party consisting of most of its members. Females stay in the party irrespective of the estrous state and aggregate in the center.
Older females stay in the most central part.
Newly immigrated females become less eager to interact socially with other females after they have their own offspring. Sage focus editions, Vol. Sage Publications, Inc, Newbury Park, CA, US. 1988. Turke, Paul W. Effects of ovulatory concealment and synchrony on protohominid mating systems and parental roles. The present author hypothesizes that ovulatory concealment and synchrony and extended sexual receptivity constituted pressures that forced protohominid males to extend consortships and behave increasingly paternally.