Characterization and Social Correlates of Fecal Testosterone and Cortisol Excretion in Wild Male Saguinus mystax
Characterization and Social Correlates of Fecal Testosterone and Cortisol Excretion in Wild Male Saguinus mystax
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野生雄性 Saguinus mystax 粪便睾酮和皮质醇排泄的特征和社会相关性
DOI：
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发表时间：
2005
影响因子：
2.5
通讯作者：
M. Heistermann
中科院分区：
文献类型：
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作者：
M. Huck;Petra Löttker;E. Heymann;M. Heistermann
雄性灵长类动物的生殖成功受睾酮(T)和皮质醇(C)的影响。我们通过粪便激素分析对野生神秘沙蝇进行了检测。首先，我们想要描述一年中男性荷尔蒙的状态。我们进一步测试了繁殖雌性的生殖状态、社会不稳定性和群体间相遇率对T水平的影响，并将结果与挑战假说的预测结果进行了比较（Wingfield et al., 1990）。我们还测试了激素水平的个体间差异，这可能与社会或繁殖状况有关。我们在秘鲁东北部Estación Biológica Quebrada Blanco对两组胡子绢毛猴进行了为期12个月的研究，收集了数据。我们发现，在这一年中，所有男性的T和C水平都相当相似。然而，在婴儿出生后不久，在该组的育龄雌性卵巢不活动的阶段，T的升高是明显的。在社会不稳定的阶段，激素水平没有显著升高，与群体间相遇率无关，并且在繁殖和非繁殖雄性之间没有差异。我们的研究结果证实了挑战假说（Wingfield et al., 1990）。数据表明，胡子绢毛猴的繁殖竞争不是基于内分泌，而是基于行为机制，可能与精子竞争相结合。
Reproductive success in male primates can be influenced by testosterone (T) and cortisol (C). We examined them in wild Saguinus mystax via fecal hormone analysis. Firstly, we wanted to characterize male hormonal status over the course of the year. Further we tested the influence of the reproductive status of the breeding female, social instability, and intergroup encounter rates on T levels, comparing the results with predictions of the challenge hypothesis (Wingfield et al., 1990). We also tested for interindividual differences in hormonal levels, possibly related to social or breeding status. We collected data during a 12-mo study on 2 groups of moustached tamarins at the Estación Biológica Quebrada Blanco in northeastern Peru. We found fairly similar T and C levels over the course of the year for all males. Yet an elevation of T shortly after the birth of infants, during the phase of ovarian inactivity of the group’s breeding female, was evident. Hormonal levels were not significantly elevated during a phase of social instability, did not correlate with intergroup encounter rates, and did not differ between breeding and nonbreeding males. Our results confirm the challenge hypothesis (Wingfield et al., 1990). The data suggest that reproductive competition in moustached tamarins is not based on endocrinological, but instead on behavioral mechanisms, possibly combined with sperm competition.
合作繁殖普通狨猴的受孕后生殖竞争。
影响因子：
3.5
作者：
Saltzman,Wendy;Liedl,KimberJ;Salper,OrrieJ;Pick,RebeccaR;Abbott,DavidH
通讯作者：
Abbott,DavidH