PDF(Pubmed)
Abstract：
Social interactions can sometimes be a source of stress, but social companions can also ameliorate and buffer against stress. Stress and metabolism are closely linked, but the degree to which social companions modulate metabolic responses during stressful situations-and whether such effects differ depending on social rank-is poorly understood. To investigate this question, we studied Neolamprologus pulcher, a group-living cichlid fish endemic to Lake Tanganyika and measured the metabolic responses of dominant and subordinate individuals when they were either visible or concealed from one another. When individuals could see each other, subordinates had lower maximum metabolic rates and tended to take longer to recover following an exhaustive chase compared with dominants. In contrast, metabolic responses of dominants and subordinates did not differ when individuals could not see one another. These findings suggest that the presence of a dominant individual has negative metabolic consequences for subordinates, even in stable social groups with strong prosocial relationships.
摘要：
社会交往有时会成为压力的来源，但是社交伙伴也可以改善和缓冲压力。压力和新陈代谢紧密相连，但是，社会同伴在压力情况下调节代谢反应的程度以及这种影响是否因社会等级而异，人们对此知之甚少。为了调查这个问题，我们研究了新金丝雀，坦any尼喀湖特有的群居丽鱼鱼，测量了显性和下级个体在可见或相互隐藏时的代谢反应。当个人可以看到对方时，与优势人群相比，次级人群的最大代谢率较低，并且在进行详尽的追逐后恢复所需的时间更长。相比之下,当个体无法看到彼此时，支配者和下属的代谢反应没有差异。这些发现表明，显性个体的存在对下属有负面的代谢后果，即使在亲社会关系牢固的稳定社会群体中。
