Marshall Andrew J, Hohmann Gottfried
Department of Anthropology, Harvard University, Cambridge, Massachusetts 02138, USA.
Am J Primatol. 2005 Jan;65(1):87-92. doi: 10.1002/ajp.20099.
We collected urine samples from seven male bonobos (Pan paniscus) in the Eyengo community, Lomako Forest, Democratic Republic of Congo, and assayed them for testosterone (T). T levels averaged 525 pmol/mg Cr in adult males, and 309 pmol/mg Cr in subadult males. We collected hormonal and behavioral data during a period of relative social instability following the recent arrival of two immigrant males. In concordance with predictions derived from the challenge hypothesis [Wingfield et al., American Naturalist 136:829-846, 1990], which relates T to levels of reproductive aggression, the alpha male had the highest circulating levels of T. When we removed the two recent immigrant males from the analysis, there was a significant positive correlation between T levels and dominance rank for the long-term resident males (n=5, P=0.001, r2=0.98). These are the first data on T levels in wild bonobos, and the results suggest that further study of the relationship between T levels and social context in this species could inform current models relating hormones and aggression in wild apes.
我们从刚果民主共和国洛马科森林埃延戈社区的七只雄性倭黑猩猩（Pan paniscus）身上采集了尿液样本，并对其进行睾酮（T）检测。成年雄性的T水平平均为525皮摩尔/毫克肌酐，亚成年雄性为309皮摩尔/毫克肌酐。在两只移民雄性最近到来后的一段相对社会不稳定时期，我们收集了激素和行为数据。与从挑战假说[Wingfield等人，《美国博物学家》136:829 - 846，1990]得出的预测一致，该假说将T与生殖攻击水平相关联，优势雄性具有最高的循环T水平。当我们在分析中排除这两只最近的移民雄性后，长期 resident 雄性（n = 5，P = 0.001，r2 = 0.98）的T水平与优势等级之间存在显著正相关。这些是关于野生倭黑猩猩T水平的首批数据，结果表明，对该物种T水平与社会背景之间关系的进一步研究可能为当前关于野生猿类激素与攻击行为的模型提供信息。
