College of Psychology: Faculty Articles

Title

Sperm competition in humans: Implications for male sexual psychology,physiology, anatomy, and behavior

Document Type

Article

Publication Date

2007

Keywords

anticuckoldry, evolutionary psychology, female infidelity, sexual conflict, sperm competition

Publication Title

Annual Review of Sex Research

ISSN

1053-2528

Volume

18

Issue/No.

1

Abstract

With the recognition afforded by evolutionary science that female infidelity was a recurrent feature of our evolutionary past has come the development of a new area of study within human mating: sperm competition. A form of male-male postcopulatory competition, sperm competition occurs when the sperm of two or more males concurrently occupy the reproductive tract of a female and compete to fertilize her ova. Just as males must compete for mates, if two or more males have copulated with a female within a sufficiently short period of time, the sperm from different males will compete for fertilizations. In the 2 decades since Smith (1984) first argued that sperm competition occurs in humans, this theory has been enriched with new ideas and discoveries. We review the recent theoretical and empirical work on human sperm competition, identify limitations and challenges of the research, and highlight important directions for future research.

DOI

10.1080/10532528.2007.10559845

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