Journal
EUROPEAN JOURNAL OF NEUROSCIENCE
Volume 52, Issue 1, Pages 2604-2613Publisher
WILEY
DOI: 10.1111/ejn.14588
Keywords
dark test; free movement pattern Y-maze task; light; novel tank diving test; Pavlovian fear conditioning test; sex differences
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Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior Brazil (CAPES) at the University of Portsmouth, UK [001]
- British Academy
- Foundation for Liver Research (UK)
- University of Portsmouth
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Zebrafish (Danio rerio) are widely used as a translational model for human neuropsychiatric conditions. Many studies have not considered sex differences in their analyses. Here, we studied sex differences of adult zebrafish in two behavioral domains: Anxiety and Memory. To assess whether sex influences anxiety-like responses, we used two different behavioral protocols, the novel tank diving task and the light-dark test. To assess sex differences in learning and memory tasks, we explored two memory domains, short-term spatial memory (free movement pattern Y-maze task) and short-term fear memory (Pavlovian fear-conditioning task). Although we did not find any significant difference in learning and memory tasks, female zebrafish showed robust increases in anxiety-like behavioral endpoints in both anxiety tests. Overall, our data suggest that zebrafish is a sensitive model to work with sex differences when modeling anxiety-related disorders and this should be an important factor to consider in different experimental designs.
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