Cited by 76Neuroendocrine regulation and behaviorAnimal Behavior and ReproductionNeurotransmitter Receptor Influence on Behavior

Effects of photoperiod and experience on aggressive behavior in female California mice

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Silva, Andrea L., Fry, William H.D., Sweeney, Colleen, Trainor, Brian C.·2010·Behavioural Brain Research

Abstract

Aggressive behavior among females is observed in many species, but the mechanisms of this behavior have historically been understudied. In many species of rodents, winter-like short day photoperiods induce increased aggression levels compared to summer-like long day photoperiods. Recent reports in hamsters show that short days also increase aggression in females. We examined the effects of photoperiod on aggression in female California mice, and for the first time compare brain activity of aggression-tested female rodents under different photoperiods. We observed that female California mice were more aggressive when housed in short days versus long days. Intriguingly, we also observed that under long days female attack latency decreases with repeated testing in resident-intruder tests. These data suggest that winner effects that have been described in males may also occur in females. We also used the expression of phosphorylated extracellular signal-regulated kinases (pERK) in the brain to estimate brain activity during aggression tests. pERK can alter neuronal activity in the short term and in the long term can act as a transcription factor. Using immunoblot analyses we observed that aggression-induced pERK expression in the female bed nucleus of the stria terminalis and medial amygdala occurs under both long and short days. Thus, the mechanisms controlling increased aggression under short days are still unclear and additional study is needed.

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Authors
Silva, A. L., Fry, W. H. D., Sweeney, C., & Trainor, B. C.
Affiliations
  • University of California, Davis (US)
  • UC Davis Comprehensive Cancer Center (US)
Corresponding author
Trainor, Brian C.
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2010-04
Volume
208
Issue
2
Pages
528-534
ISSN
0166-4328 (ISSN-L)
OpenAlex
W1990245319
Cited by
76
References
57
Citations by year
2026: 2 · 2025: 5 · 2024: 3 · 2023: 5 · 2022: 6 · 2021: 8 · 2020: 2 · 2019: 1 · 2018: 5 · 2017: 6 · 2016: 5 · 2015: 3 · 2014: 8 · 2013: 6 · 2012: 3
FWCI
7.00
Type
journal article
Language
en
Open access
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of California, Davis
  • National Institute of Mental Health (R01MH085069, R01 MH85069)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
photoperiod, female aggression, California mouse, short-day photoperiod, winner effect, resident-intruder test, attack latency, extracellular signal-regulated kinase, ERK1/2 phosphorylation, bed nucleus of the stria terminalis, medial amygdala
MeSH terms
Aggression, Analysis of Variance, Animals, Brain, Diestrus, Enzyme-Linked Immunosorbent Assay, Estradiol, Female, Gene Expression Regulation, Enzymologic, Photoperiod, Extracellular Signal-Regulated MAP Kinases, Mice

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