Environmental insults in early life and submissiveness later in life in mouse models

Seico Benner, Toshihiro Endo, Masaki Kakeyama, Chiharu Tohyama

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Dominant and subordinate dispositions are not only determined genetically but also nurtured by environmental stimuli during neuroendocrine development. However, the relationship between early life environment and dominance behavior remains elusive. Using the IntelliCage-based competition task for group-housed mice, we have previously described two cases in which environmental insults during the developmental period altered the outcome of dominance behavior later in life. First, mice that were repeatedly isolated from their mother and their littermates (early deprivation; ED), and second, mice perinatally exposed to an environmental pollutant, dioxin, both exhibited subordinate phenotypes, defined by decreased occupancy of limited resource sites under highly competitive circumstances. Similar alterations found in the cortex and limbic area of these two models are suggestive of the presence of neural systems shared across generalized dominance behavior.

Original languageEnglish
Article number091
JournalFrontiers in Neuroscience
Volume9
Issue numberMAR
DOIs
Publication statusPublished - 2015 Mar 31
Externally publishedYes

Keywords

  • Dominance behavior
  • Early life environment
  • IntelliCage-based competition task
  • Mouse
  • Social behavior

ASJC Scopus subject areas

  • Neuroscience(all)

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