A very interesting essay from the journal of Evolutionary Psychology on sperm competition and its role in shaping the human penis, (size, length, width, forceful ejaculation), evolutionary strategies for successful fertilization i.e. semen displacement and coagulation. On sexual intercourse and evolutionary benefits of deep penis thrusting, function of the foreskin and effects of circumcision, premature ejaculation, female reproductive strategies i.e. copulation with multiple partners, human sexual behaviour and wife rape (males having sex with their partner if suspecting them of infidelity).
From the essay: 'For semen displacement to be adaptive it presupposes situations in which human females have sex with multiple (two or more) males in fairly close succession/temporal proximity to one another. Situations that satisfy this criterion include 1) consensual sex with multiple concurrent partners, 2) nonconsensual sex with multiple concurrent partners, and 3) multiple successive consensual and/or nonconsensual sexual encounters that occur within a relatively brief period of time. Examples include, group sex, gang rape, extra pair copulations, promiscuity, prostitution, and resident male insistence on sex in response to suspected infidelity.'
Read More: Evolution, Human Reproduction & Fertilization: Sperm Competition, Semen Displacement & Penis
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Page Title: 'Sexual Slang: 'Gang Bang'. Evolution Culture of
Group Sex, Female Reproductive Strategies, Rape'.
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