Hofmann J E, Getz L L
Department of Ecology, Ethology, and Evolution, University of Illinois, 505 S. Goodwin, Urbana, IL 61801, U.S.A.
Behav Processes. 1988 Jul;17(1):57-61. doi: 10.1016/0376-6357(88)90050-2.
Virgin female Microtus ochrogaster living in family groups were reproductively activated by twelve 1-hr exposures over a 3-day period to unrelated sexually experienced males. Reproductive activation among virgin females receiving six or eight exposures over a 2- or 3-day period did not differ significantly from that of unexposed control females. Thus, frequent multiple exposures to unfamiliar males (and repeated stimulation by a male urinary chemosignal) can override the reproductive suppression typically experienced by virgin females remaining in family groups.
生活在家族群体中的成年雌性橙腹田鼠，在三天内接受了12次、每次1小时与无关的有性经验雄性的接触后，其生殖系统被激活。在2天或3天内接受6次或8次接触的成年雌性中，生殖系统的激活情况与未接触的对照雌性相比，没有显著差异。因此，频繁多次接触陌生雄性（以及雄性尿液化学信号的反复刺激）可以克服留在家族群体中的成年雌性通常经历的生殖抑制。
