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Chimpanzee Sexuality

Chimpanzee Sexuality. Promiscuous mating. Estrus chimp may copulate 30-50 x per day. Concentration of mating with dominant male(s) mid-cycle. Function of Estrus Swellings?. Advertise fecundity. Incite male-male competition. Ensure mating with the dominant male.

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Chimpanzee Sexuality

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  1. Chimpanzee Sexuality • Promiscuous mating • Estrus chimp may copulate 30-50 x per day • Concentration of mating with dominant male(s) mid-cycle

  2. Function of Estrus Swellings? • Advertise fecundity • Incite male-male competition • Ensure mating with the dominant male • Attraction of many males to avoid infanticide

  3. Bonobo Sexuality • A high degree of non-procreative sexual activity • Regular occurrence of female-female sexual behavior

  4. BonobosExplanations for G-G Rubbing • Reconciliation • Mate attraction • Tension Regulation • Expression of social status • Social bonding/alliance formation

  5. Bonobo Testosterone Levels and G-G Rubbing By Cycle Phase Jurke et al., 2000

  6. Orgasm in Female Primates • Rhesus macaques • Stumptail macaques • Japanese macaques • Orangutans • Chimpanzees • Bonobos All involved manual stimulation, not during intercourse

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