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Technique for producing and measuring territorial aggression using laboratory mice.

J B Thurmond

    Physiology & Behavior
    |June 1, 1975
    PubMed
    Summary

    A new method reliably measures territorial aggression in male CF-1 mice. This technique uses a simple apparatus to assess aggression levels and dominance, offering a naturalistic behavioral model for research.

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    Area of Science:

    • Ethology
    • Neuroscience
    • Behavioral Science

    Background:

    • Territorial aggression is a key social behavior in many species.
    • Existing methods for studying aggression often involve artificial stimuli like isolation or drugs.
    • A reliable and naturalistic method is needed to study aggression in laboratory mice.

    Purpose of the Study:

    • To develop and validate a simple apparatus for producing and measuring territorial aggression in male CF-1 mice.
    • To establish reliable parameters for aggression testing using this apparatus.
    • To provide a robust model for assessing factors influencing aggression.

    Main Methods:

    • Male CF-1 mice resided alone for 24 hours in a testing box connected to their home cage.
    • A naive male CF-1 intruder mouse was introduced to the resident's territory.
    • Aggression was measured by latency to attack, attack frequency, wounding, and dominance within 20 minutes.

    Main Results:

    • 85-90% of resident mice attacked intruders under control conditions.
    • Latency to attack averaged approximately 5 minutes, with dominance established quickly.
    • The method allowed simultaneous data collection for 10 pairs of mice.

    Conclusions:

    • The developed technique provides a reliable, naturalistic model for studying territorial aggression in mice.
    • It offers clear, valid measures of aggression and allows study of both aggressive and submissive roles.
    • The apparatus is simple, economical, and convenient for behavioral research.

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