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  • Title: The smell of "anxiety": Behavioral modulation by experimental anosmia in zebrafish.
    Author: Abreu MS, Giacomini AC, Kalueff AV, Barcellos LJ.
    Journal: Physiol Behav; 2016 Apr 01; 157():67-71. PubMed ID: 26821184.
    Abstract:
    Olfaction is strongly involved in the regulation of fish behavior, including reproductive, defensive, social and migration behaviors. In fish, anosmia (the lack of olfaction) can be induced experimentally, impairing their ability to respond to various olfactory stimuli. Here, we examine the effects of experimental lidocaine-induced anosmia on anxiety-like behavior and whole-body cortisol levels in adult zebrafish (Danio rerio). We show that experimentally-induced anosmia reduces anxiolytic-like behavioral effects of fluoxetine and seems to interact with anxiogenic effect of stress also paralleling cortisol responses in zebrafish. These findings provide first experimental evidence that temporary anosmia modulates anxiety-like behaviors and physiology in adult zebrafish.
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