Li Feng-Hua, Zhong Wen-Qin, Wang Zuoxin, Wang De-Hua
State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, The Chinese Academy of Sciences, No. 25 Beisihuan Xilu, Zhongguancun, Haidian, Beijing 100080, China.
Physiol Behav. 2007 Feb 28;90(2-3):490-5. doi: 10.1016/j.physbeh.2006.10.009. Epub 2006 Dec 1.
Social status can influence an animal's immune and reproductive functions, eventually leading to alterations in immunocompetence and reproductive success. Here, we report that rank assessed in a food competition test, considered as an index of social status, has significant influences on humoral immune functions in male Brandt's voles (Lasiopodomys brandtii) living in a group. Our data reveal a negative correlation of the spleen mass and serum antibody levels with social status, as well as a positive correlation of serum cortisol levels with social status. Males winning in food competition had a smaller spleen, a lower level of serum antibodies, and a higher level of serum cortisol than did their conspecific counterparts. These data indicate interactions between social status and humoral immune functions and might illustrate a trade-off between infection risks and reproductive success in male Brandt's voles.
社会地位会影响动物的免疫和生殖功能，最终导致免疫能力和繁殖成功率发生改变。在此，我们报告称，在食物竞争测试中评估的等级（被视为社会地位的指标）对群居雄性布氏田鼠（Lasiopodomys brandtii）的体液免疫功能有显著影响。我们的数据显示，脾脏质量和血清抗体水平与社会地位呈负相关，而血清皮质醇水平与社会地位呈正相关。在食物竞争中获胜的雄性田鼠比同物种的对手脾脏更小、血清抗体水平更低、血清皮质醇水平更高。这些数据表明了社会地位与体液免疫功能之间的相互作用，可能说明了雄性布氏田鼠在感染风险和繁殖成功率之间的权衡。
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