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Summary
Female rats exhibit increased maze exploration during oestrus, a reproductive cycle phase. This study observed faster maze patrolling and higher activity levels in female rats at oestrus.
Area of Science:
- Animal behavior
- Reproductive endocrinology
- Neuroscience
Background:
- Estrous cycle influences behavior in female rodents.
- Locomotor activity and maze exploration are common behavioral measures.
- Previous studies suggest hormonal changes impact activity levels.
Purpose of the Study:
- To investigate the effect of the oestrus cycle on maze navigation in female rats.
- To quantify changes in locomotor activity and central arena exploration during oestrus.
Main Methods:
- Twenty-seven nulliparous RHA/Verh female rats were tested.
- A Dashiell-type complex maze with an illuminated central arena was used.
- Daily 6-minute trials were conducted to assess behavior.
Main Results:
- Female rats patrolled the maze significantly faster during oestrus compared to adjacent days.
- General locomotor activity increased at oestrus.
- Body weight decreased, and entries into the illuminated central arena increased during oestrus.
Conclusions:
- The oestrus cycle markedly influences spatial navigation and general activity in female rats.
- Behavioral changes during oestrus may be linked to reproductive hormonal fluctuations.
- These findings contribute to understanding the neurobiological underpinnings of reproductive behavior.