The effect of agonists of serotonin receptors on predator aggressiveness (the "mouse killing" test) is studied on Norway rats. Ipsapirone and eltoprazine are found to have no effect on predator aggressiveness. 1-[3-(Trifluoromethyl)phenyl]piperazine x HCl (TFMPP) considerably reduces aggressiveness. The serotonin precursor 5-hydroxyptryptophan also lowers it, while the antagonist of 5-HT2A receptors ketanserin abolishes the inhibitory effect of 5-hydroxytryptophan. Presumably, the inhibitory effects of serotonin on predator aggressiveness are realized via the 5-HT2A and 5-HT2C brain serotonin receptors.
- Predator aggressiveness
- Types of serotonin receptors
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)