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Primate SexualityComparative Studies of the Prosimians, Monkeys, Apes, and Humans$
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Alan F. Dixson

Print publication date: 2012

Print ISBN-13: 9780199544646

Published to Oxford Scholarship Online: May 2015

DOI: 10.1093/acprof:osobl/9780199544646.001.0001

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Sperm competition

Sperm competition

(p.298) Chapter 8 Sperm competition
Primate Sexuality

Alan F. Dixson

Oxford University Press

This chapter focuses on the concept of sperm competition among primates. It states that when a female primate mates with a number of partners, sperm competition may occur between the gametes of rival males, for entree into the ova. Relative testes size and mating systems in primates between non-primates are also examined. The chapter then defines sperm pleiomorphism of humans and relates it to sperm competition. It discusses the different male accessory reproductive organs such as vasa deferentia, seminal vesicles, and prostate gland. It also addresses the question: Does mating order influence male reproductive success, and do social or sexual stimuli affect sperm counts?

Keywords:   sperm competition, testes, gametes, sperm pleiomorphism, primates, vasa deferentia, seminal vesicles, prostate gland

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