iScience (May 2023)

Social rank-dependent effects of testosterone on huddling strategies in mice

  • Ye Zhao,
  • Xueyong Yin,
  • Yang Yu,
  • Shihao Huang,
  • Hao Feng,
  • Shuang Wang,
  • Yiming Cai,
  • Ruofan Zhao,
  • Shuai Gao,
  • Ye Liu,
  • Zhengxin Zhang,
  • Xinyu Zhao,
  • Ruonan Qiao,
  • Jialin Yuan,
  • Weichen Guan,
  • Huiping Yang,
  • Yun Shi,
  • Haishui Shi

Journal volume & issue
Vol. 26, no. 5
p. 106516

Abstract

Read online

Summary: Huddling behavior, a typical social interaction among animals, has the benefits of obtaining social support and adapting environment. Huddling behavior is determined by social (social hierarchy), environmental factors (stress events), and the neuroendocrine system. Nevertheless, the huddling behavior of different social hierarchies and the underlying mechanisms have not been fully elucidated. In the present study, acute 2-methyl-2-thiazoline (2 MT) can induce huddling behavior and significantly increase serum levels of testosterone (T) in mice; and the increased T level was positively correlated with huddling behavior. Further, the T treatment significantly increased the huddling behavior in mice under 2 MT exposure condition. More interestingly, T can quickly promote dominant individuals to occupy safe positions when huddling together under predator odor. Collectively, T can rapidly regulate the individual’s adaptive response to threats in a social rank-dependent manner, which provides a new perspective for the in-depth study of the influencing factors and underlying mechanisms of huddling behavior.

Keywords