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Do odors from different cats induce equivalent unconditioned and conditioned responses in rats?
Cristina Muñoz-Abellán1, Antonio Armario, Roser Nadal
1Institute of Neurosciences, Autonomous University of Barcelona, Bellaterra 08193, Spain.
Physiology & Behavior
|December 17, 2009
Summary
Cat odors trigger immediate stress responses in rats, but only some odors induce lasting anxiety. Individual cat differences significantly impact long-term anxiety, crucial for understanding animal models of post-traumatic stress disorder (PTSD).
Area of Science:
- Neuroscience
- Animal Behavior
- Endocrinology
Background:
- Cats are natural predators of rodents, leading to increased research on cat odor effects.
- Interest is high in developing animal models for post-traumatic stress disorder (PTSD).
- Previous studies noted variability in cat odor effects, but lacked detailed reports.
Purpose of the Study:
- To investigate the unconditioned and conditioned responses to cat odors in Sprague-Dawley rats.
- To assess the impact of individual cat odor differences on anxiety-like behavior.
- To evaluate the dissociation between immediate and long-lasting behavioral effects.
Main Methods:
- Exposed male Sprague-Dawley rats to fur/skin odors from three different cats.
- Measured unconditioned endocrine (corticosterone) and behavioral responses.
- Assessed conditioned behavioral responses and anxiety-like behavior using the elevated plus-maze.
Main Results:
- Unconditioned endocrine and behavioral responses were significant and similar across all three cats.
- Conditioned behavioral responses were evident for all cats, with minor variations.
- Only one male cat's odor significantly increased anxiety-like behavior in the elevated plus-maze.
Conclusions:
- Unconditioned and conditioned responses to cat odors do not reliably predict long-lasting anxiety.
- Individual differences among cats primarily influence the induction of sustained anxiety-like behavior.
- Understanding these cat-specific differences is critical for refining PTSD animal models.
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