Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, 46 Vanemuise Street, Tartu 51014, Estonia.
Horm Behav. 2011 Apr;59(4):605-11. doi: 10.1016/j.yhbeh.2011.02.018. Epub 2011 Mar 3.
Testosterone can be expected to play a significant role in mediating behavior and life history in social animals, but the number of species with data from the wild is still too small to make generalizations. We investigated the influence of social factors (social status, aggression, and reproductive females) and environmental variation (rainfall and temperature) on fecal testosterone concentrations in wild male gray-cheeked mangabeys (Lophocebus albigena) living in five groups in Kibale National Park, Uganda. This species is phylogenetically closely related to baboons, but is arboreal, with multi-male, multi-female groups rarely exceeding 20 individuals. We analyzed 358 fecal samples from 21 adult males. We found that the highest-ranking males had the highest testosterone concentrations while immigrant males had the lowest testosterone concentrations. Aggression was not correlated with testosterone levels. The presence of females with sexual swellings at their most tumescent stage increased testosterone concentrations in all males. Finally, individuals tended to have lower testosterone when the temperature was higher.
睾酮有望在调节社会性动物的行为和生活史方面发挥重要作用，但具有野外数据的物种数量仍然太少，无法进行概括。我们调查了社会因素（社会地位、攻击性和繁殖雌性）和环境变化（降雨量和温度）对生活在乌干达基巴莱国家公园的五个群体中的野生雄性灰脸山魈（Lophocebus albigena）粪便中睾酮浓度的影响。该物种与狒狒在系统发育上密切相关，但为树栖，多雄性、多雌性群体很少超过 20 只。我们分析了来自 21 只成年雄性的 358 个粪便样本。我们发现，等级最高的雄性睾酮浓度最高，而移民雄性的睾酮浓度最低。攻击性与睾酮水平无关。处于最肿胀阶段的具有性肿胀的雌性的存在增加了所有雄性的睾酮浓度。最后，当温度较高时，个体的睾酮水平往往较低。
