A semiautomated test apparatus for studying partner preference behavior in the rat

Area of Science:

• Neuroscience
• Animal Behavior
• Ethology

Background:

• Partner preference behavior is crucial for understanding social interactions and reproductive strategies in rodents.
• Previous studies utilized earlier versions of the three-compartment box (3CB) to assess partner preference.
• Assessing partner preference traditionally involves time-consuming and labor-intensive manual observation.

Purpose of the Study:

• To describe a semiautomated three-compartment box (3CB) for efficient partner preference behavior assessment in rats.
• To introduce software for calculating partner preference scores.
• To validate the utility of the semiautomated 3CB by re-examining the behavior of neonatally ATD-treated male rats.

Main Methods:

• Development of a semiautomated three-compartment box (3CB) with automated recording of compartment time and locomotor activity.
• Creation of specialized software for calculating partner preference scores.
• Validation using neonatally ATD-treated male rats to assess partner preference and locomotor activity.

Main Results:

• The semiautomated 3CB reduces time and labor compared to previous versions.
• Neonatally ATD-treated male rats exhibited bisexual partner preference, consistent with prior research.
• A novel finding revealed significantly higher locomotor activity in ATD-treated males compared to control groups.

Conclusions:

• The semiautomated 3CB is an efficient and effective tool for studying rat partner preference behavior.
• The apparatus confirms the bisexual nature of ATD-treated male rats.
• The study highlights increased locomotor activity as a behavioral characteristic associated with neonatal ATD treatment in male rats.