Penile spines of a domestic cat
Many mammalian species have developed keratinized penile spines along the glans and/or shaft, which may be involved in sexual selection. These spines have been described as being simple, single-pointed structures (macaques) or complex with two or three points per spine (strepsirrhines).[1] Penile spine morphology may be related to mating system.[2][3]
- ^ Alan F. Dixson (26 January 2012). Primate Sexuality: Comparative Studies of the Prosimians, Monkeys, Apes, and Humans. Oxford University Press. ISBN 978-0-19-954464-6. Retrieved 27 September 2013.
- ^ Orr, Teri J., and Patricia LR Brennan. "All Features Great and Small—the Potential Roles of the Baculum and Penile Spines in Mammals." Integrative and Comparative Biology (2016): icw057.
- ^ Stockley, P. "Sperm competition risk and male genital anatomy: comparative evidence for reduced duration of female sexual receptivity in primates with penile spines. Archived 2017-02-06 at the Wayback Machine" Evolutionary Ecology 16.2 (2002): 123-137.