Cited by 62Neuroendocrine regulation and behaviorHypothalamic control of reproductive hormonesAnimal Behavior and Reproduction

Dynamic changes in social dominance and mPOA GnRH expression in male mice following social opportunity

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Williamson, Cait M., Romeo, Russell D., Curley, James P.·2017·Hormones and Behavior

Abstract

Social competence - the ability of animals to dynamically adjust their social behavior dependent on the current social context - is fundamental to the successful establishment and maintenance of social relationships in group-living species. The social opportunity paradigm, where animals rapidly ascend a social hierarchy following the removal of more dominant individuals, is a well-established approach for studying the neural and neuroendocrine mechanisms underlying socially competent behavior. In the current study, we demonstrate that this paradigm can be successfully adapted for studying socially competent behavior in laboratory mice. Replicating our previous reports, we show that male laboratory mice housed in a semi-natural environment form stable linear social hierarchies. Novel to the current study, we find that subdominant male mice immediately respond to the removal of the alpha male from a hierarchy by initiating a dramatic increase in aggressive behavior towards more subordinate individuals. Consequently, subdominants assume the role of the alpha male. Analysis of brain gene expression in individuals 1h following social ascent indicates elevated gonadotropin-releasing hormone (GnRH) mRNA levels in the medial preoptic area (mPOA) of the hypothalamus compared to individuals that do not experience a social opportunity. Moreover, hormonal analyses indicate that subdominant individuals have increased circulating plasma testosterone levels compared to subordinate individuals. Our findings demonstrate that male mice are able to dynamically and rapidly adjust both behavior and neuroendocrine function in response to changes in social context. Further, we establish the social opportunity paradigm as an ethologically relevant approach for studying social competence and behavioral plasticity in mammals.

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Crossref · 10.1016/j.yhbeh.2016.11.001

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Authors
Williamson, C. M., Romeo, R. D., & Curley, J. P.
Affiliations
  • Columbia University (US)
  • Barnard College (US)
Corresponding author
Curley, James P.
Venue
Hormones and Behavior
Publisher
Elsevier BV
Published
2017-01
Volume
87
Pages
80-88
ISSN
0018-506X (ISSN-L)
OpenAlex
W2547587217
Cited by
62
References
69
Citations by year
2026: 1 · 2025: 6 · 2024: 9 · 2023: 5 · 2022: 7 · 2021: 8 · 2020: 6 · 2019: 8 · 2018: 9 · 2017: 3
FWCI
10.50
Type
journal article
Language
en
Open access
Locations
  • Hormones and Behavior (acceptedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (DGE-16-44869)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
Keywords
social dominance, social hierarchy, social competence, gonadotropin-releasing hormone, medial preoptic area, hypothalamus, testosterone, aggression, social ascent, behavioral plasticity, neuroendocrine regulation, male mice
MeSH terms
Aggression, Animals, Behavior, Animal, Brain, Competitive Behavior, Hierarchy, Social, Hypothalamus, Gonadotropin-Releasing Hormone, Male, Preoptic Area, Social Behavior, Social Dominance, Social Environment, Animals, Outbred Strains, Mice

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