Sperm competition in humans

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Several survey-based studies suggest that the more time that has passed since a man has last seen his spouse, the more he will want to have sex with her. International Journal of Andrology. The transfer of another male's semen from one female to the next as a consequence of genitals specialized for sperm removal, is also known as fertilization by proxy, and has been documented in insects Haubruge, Arnaud, Mignon, and Gage, To obtain measures of self-perceived mate value, participants completed the Components of Self-Perceived Mate Value questionnaire CSMV. This close alignment largely factors in determining male fertility in Nauphoeta cinerea. For example, males who are at a higher risk of sperm competition defined as having female partners with high reproductive value, such as being younger and physically attractive engaged more frequently in semen-displacing behaviors during sexual intercourse than men who were at a lower risk of sperm competition.
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Sperm Competition in Humans

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Sexual Size Dimorphism, Canine Dimorphism, and Male-Male Competition in Primates | SpringerLink

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Navigation Main page Contents Featured content Current events Random article Donate to Wikipedia Wikipedia store. About two months, according to the latest studies. At the root of the penis the proximal end of the corpus spongiosum lies the external sphincter muscle. Shackelford Nicholas Pound Copyright Publisher Springer US Copyright Holder Springer-Verlag US eBook ISBN DOI
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