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Novelty of the arena impairs the cortisol-related increase in the aggression of matrinxa (Brycon amazonicus)
(Physiology &behavior, 2015-03-15) [Artigo]
The dichotomic effect of a cortisol level rise in vertebrate behavior has been widely observed. Generally, a chronic increase of the hormone level inhibits aggression, while an acute rise increases aggression. However, in ...