Wallen K
Science. 1982 Jul 23;217(4557):375-7. doi: 10.1126/science.7201164.
The sexual behavior of rhesus monkeys in 15 male-female pairings was observed in both a large and a small area during the follicular and luteal phases of the female's cycle. Males ejaculated in all tests at the follicular phase of the female's cycle and in 53 percent of tests at the luteal phase. However, a significant decline in ejaculation during tests at the luteal phase occurred in the large, but not in the small area. Thus the degree to which the pair's sexual behavior was influenced by the female's hormonal state depended on the spatial conditions of the test.
在雌性猕猴发情周期的卵泡期和黄体期，对15对雌雄猕猴在大面积和小面积区域的性行为进行了观察。在雌性猕猴发情周期的卵泡期，所有测试中雄性均射精；在黄体期，53%的测试中雄性射精。然而，在大面积区域进行测试时，黄体期射精次数显著下降，而在小面积区域则没有。因此，猕猴对性行为受雌性激素状态影响的程度取决于测试的空间条件。
