期刊名称：Evolutionary Psychology: an international journal of evolutionary approaches to psychology and behavior
印刷版ISSN：1474-7049
出版年度：2004
卷号：2
页码：12-23
出版社：Ian Pitchford, Ed.& Pub
摘要：We examine some of the implications of the possibility that the human penis may have evolved to compete with sperm from other males by displacing rival semen from the cervical end of the vagina prior to ejaculation. The semen displacement hypothesis integrates considerable information about genital morphology and human reproductive behavior, and can be used to generate a number of interesting predictions
关键词：penis morphology; semen displacement; sperm competition; sperm ;retention; premature ejaculation; double mating; circumcision; penile ;hypersensitivity; refractory period; fertilization by proxy; last male precedence; ;infertility; self-semen displacement; semen coagulation; wife rape
