Abstract
Jundiá (Rhamdia quelen) is a suitable species for aquaculture in regions of temperate or subtropical climate. This species has received great attention regarding several aspects of physiology as well as an organism to study the impact of environmental contaminations. However, experiments using validated and objective tests to evaluate the jundiá behavior are scarce. The effects of acute stress have been studied in other fish species, such as zebrafish (Danio rerio), however, the effects in jundiá are lacking. Thus, we evaluated the effects of acute stress (net chasing) on anxiety-like and social behavior in jundiá. For these purpose, all behavioral analyses were carried out using automated tracking software. We showed that the acute stress protocol increased cortisol levels and induced anxiogenic-like behavior in the novel tank test, and decreased social behavior in jundiá. The antidepressant fluoxetine was able to prevent the effects of acute stress on social behavior. Here we show a behavioral evaluation of Rhamdia quelen using consolidated tests and computerized analysis, which allows more measurable, reliable and comparable results.
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