Time-Dependent Effects of Acute Handling on the Brain Monoamine System of the Salmonid Coregonus maraena.

ABSTRACT: The immediate stress response involves the activation of the monoaminergic neurotransmitter systems including serotonin, dopamine and noradrenaline in particular areas of the fish brain. We chose maraena whitefish as a stress-sensitive salmonid species to investigate the influence of acute and chronic handling on the neurochemistry of monoamines in the brain. Plasma cortisol was quantified to assess the activation of the stress axis. In addition, we analyzed the expression of 37 genes related to the monoamine system to identify genes that could be used as markers of neurophysiological stress effects. Brain neurochemistry responded to a single handling (1 min netting and chasing) with increased serotonergic activity 3 h post-challenge. This was accompanied by a modulated expression of monoa

SUBMITTER: Martorell-Ribera J 

PROVIDER: S-EPMC7746803 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature