Unexpected appetitive events promote positive affective state in juvenile European sea bass.

ABSTRACT: Some animal species exhibit considerable physiological and behavioural alterations in response to captivity. It has been hypothesized, but rarely tested, that such changes reflect a negative affective state that is associated to this specific context. In the last years, judgement bias measures have emerged as reliable indicators of animal affective state, under the assumption that individuals in a negative affective state are more likely to evaluate ambiguous stimuli as negative and display therefore pessimistic behaviours. Here, we have developed a judgement bias task for juvenile European sea bass (Dicentrarchus labrax) aiming to measure optimism/pessimism in this marine species, which have previously been reported to show important dysregulations in captive settings. Our results show th

SUBMITTER: Alvarado MV 

PROVIDER: S-EPMC10716175 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature