Potency in male rhesus monkeys: effects of continuously receptive females

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Science  28 Apr 1978:
Vol. 200, Issue 4340, pp. 451-453
DOI: 10.1126/science.417398


Ejaculations decreased and mount latencies increased when intact males were paired regularly over a 3.5-year period (3180 tests) with ovariectomized females made constantly receptive by daily injections of estradiol. The deterioration in potency was abruptly and completely reversed by substituting a group of new but similarly treated females for the original ones.