Change of female partner and postejaculatory performance of young and old rhesus males.
This study was undertaken to determine whether a change of female partner following ejaculation would reduce the postejaculatory interval (PEI). The male subjects were seven old (mean age 22.4 years) and five young (mean age 12.2 years) rhesus males (Macaca mulatta). The female subjects were four ovariectomized females rendered sexually receptive by treatment with estradiol benzoate. Introduction of a different female following ejaculation significantly reduced the PEI and latency to a second ejaculation in both young and old males. However, a different female did not reduce latencies to preejaculatory levels. The potential for enhanced sexual performance was retained in old rhesus males.
Phoenix
C H
CH
Oregon Regional Primate Research Center, Beaverton 97006.
Jensen
J N
JN
Chambers
K C
KC
D000375:Aging / Q000502:physiology*; D000818:Animals; D004542:Ejaculation; D008253:Macaca mulatta; D008297:Male; D011930:Reaction Time / Q000502:physiology*; D012726:Sexual Behavior, Animal / Q000502:physiology*; D012747:Sexual Partners / Q000523:psychology*