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Related Experiment Videos

Mice selectively bred for an open field activity increase after maze learning.

S B Kvist1, R K Selander

  • 1Department of Psychology, Abo Akademi University, Finland.

Scandinavian Journal of Psychology
|January 1, 1990
PubMed
Summary

Selective breeding created a mouse line (S6) with enhanced maze learning and activity. These mice showed increased ambulation, thigmotaxis, and aggression, indicating altered emotional and novelty-response behaviors compared to normal mice.

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Area of Science:

  • Behavioral Neuroscience
  • Animal Genetics
  • Animal Behavior

Background:

  • Selective breeding is a powerful tool for understanding genetic contributions to complex behaviors.
  • Previous studies have utilized selective breeding to investigate behavioral traits in rodents.

Purpose of the Study:

  • To investigate the effects of six generations of unidirectional selective breeding on mouse behavior.
  • To compare the behavioral phenotypes of a selectively bred mouse line (S6) with an unselected control strain (N).

Main Methods:

  • A unidirectional selective breeding experiment was conducted over six generations.
  • Behavioral assessments included open field activity, circular open field tests, and maze learning capacity.
  • Defecation, urination patterns, and aggression were quantified to assess emotionality and novelty response.

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Main Results:

  • The S6 mouse line exhibited significantly increased open field activity post-maze learning compared to N mice.
  • S6 mice showed greater ambulation and thigmotactic behavior in a circular open field.
  • S6 mice demonstrated superior maze learning capacity and were less emotional, more responsive to novelty, and more aggressive than N mice.

Conclusions:

  • Six generations of selective breeding resulted in a distinct mouse line (S6) with enhanced learning, activity, and specific behavioral alterations.
  • The S6 line provides a valuable model for studying the genetic basis of behavioral plasticity, emotionality, and response to novelty.