Saltzman W, Schultz-Darken N J, Scheffler G, Wegner F H, Abbott D H
Wisconsin Regional Primate Research Center, University of Wisconsin, Madison 53715-1299.
Physiol Behav. 1994 Oct;56(4):801-10. doi: 10.1016/0031-9384(94)90246-1.
Subordinate female common marmosets (Callithrix jacchus) undergo ovulation suppression and exhibit low plasma cortisol levels compared to the dominant, breeding female. To determine whether this cortisol difference is mediated by the differential reproductive consequences of social status, we monitored plasma progesterone and cortisol in 32 adult female marmosets while they were housed in heterosexual pairs, during the first 3 days of heterosexual group formation, and while animals were housed in established social groups. Cortisol levels prior to group formation were significantly higher in females exhibiting cyclic ovulatory activity than in anovulatory females but were not predictive of social status. Subsequently, when animals were housed in established social groups, dominant (cyclic) females had significantly higher cortisol levels than did subordinate (anovulatory) females. Cortisol levels differed between the pre and postgroup formation conditions only in animals that underwent a corresponding onset or termination of ovulatory cyclicity. Cortisol differences between dominant and subordinate female marmosets therefore appear to be associated with differences in reproductive function rather than with social status per se.
与占主导地位的繁殖雌性普通狨猴（Callithrix jacchus）相比，从属雌性普通狨猴会经历排卵抑制，且血浆皮质醇水平较低。为了确定这种皮质醇差异是否由社会地位的不同生殖后果介导，我们在32只成年雌性狨猴处于异性配对状态时、异性群体形成的前3天以及动物处于已建立的社会群体中时，监测了它们的血浆孕酮和皮质醇水平。在群体形成之前，表现出周期性排卵活动的雌性狨猴的皮质醇水平显著高于无排卵的雌性狨猴，但这并不能预测社会地位。随后，当动物处于已建立的社会群体中时，占主导地位（有周期性排卵）的雌性狨猴的皮质醇水平显著高于从属（无排卵）雌性狨猴。仅在经历了排卵周期相应开始或终止的动物中，群体形成前后的皮质醇水平存在差异。因此，占主导地位和从属地位的雌性普通狨猴之间的皮质醇差异似乎与生殖功能的差异有关，而不是与社会地位本身有关。
