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paleoanthropology, genetics and evolution

Penile spines affect copulatory behaviour in a primate (Callithrix jacchus).

Sun, 2011-07-31 22:09 -- John Hawks
TitlePenile spines affect copulatory behaviour in a primate (Callithrix jacchus).
Publication TypeJournal Article
Year of Publication1991
AuthorsDixson, AF
JournalPhysiology & behavior
Volume49
Pagination557–562
Date Publishedmar
ISSN0031-9384
Keywords2011-03-08, mating, primates, sex
Abstract

{Androgen-dependent, keratinized "spines" occur on the glans penis in many rodents, primates and other mammals. Since penile spines overlie dermal tactile receptors, they may play a role in copulatory behaviour. An experiment was conducted to test this hypothesis. Sixteen sexually experienced adult male marmosets were paired with ovariectomized females before, and after, removal of penile spines (using thioglycollate cream applied to the glans under anaesthesia) or a sham operation. Spine removal resulted in an increased duration of preintromission pelvic thrusting (mean +/- s.e.m. from 6.87 +/- 1.09 to 14.94 +/- 3.32 s

URLhttp://view.ncbi.nlm.nih.gov/pubmed/2062934
Citation KeyDixson:1991

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