Semen Displacement as a Sperm Competition Strategy in Humans:

Evolutionary Psychology

Gordon G. Gallup, Jr.¹ 

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;   

DOI  :  10.1177/147470490400200105

学科分类：社会科学、人文和艺术（综合）

来源: Sage Journals

【 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.

【 授权许可】

CC BY-NC