Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/4701
Título: Agonistic interactions elicit rapid changes in brain nonapeptide levels in zebrafish
Autor: Teles, Magda
Gozdowska, Magdalena
Kalamarz-Kubiak, Hanna
Kulczykowska, Ewa
Oliveira, Rui Filipe
Palavras-chave: Arginine vasotocin
Isotocin
Social dominance
Aggression
Stress
Data: 2016
Editora: Elsevier
Citação: Hormones and Behavior, 84, 57–63. doi:10.1016/j.yhbeh.2016.05.020
Resumo: The teleost fish nonapeptides, arginine vasotocin (AVT) and isotocin (IT), have been implicated in the regulation of social behavior. These peptides are expected to be involved in acute and transient changes in social context, in order to be efficient in modulating the expression of social behavior according to changes in the social environment. Here we tested the hypothesis that short-term social interactions are related to changes in the level of both nonapeptides across different brain regions. For this purpose we exposed male zebrafish to two types of social interactions: (1) real opponent interactions, from which a Winner and a Loser emerged; and (2) mirror-elicited interactions, that produced individuals that did not experience a change in social status despite expressing similar levels of aggressive behavior to those of participants in real-opponent fights. Non-interacting individuals were used as a reference group. Each social phenotype (i.e. Winners, Losers, Mirror-fighters) presented a specific brain profile of nonapeptides when compared to the reference group. Moreover, the comparison between the different social phenotypes allowed to address the specific aspects of the interaction (e.g. assessment of opponent aggressive behavior vs. self-assessment of expressed aggressive behavior) that are linked with neuropeptide responses. Overall, agonistic interactions seem to be more associated with the changes in brain AVT than IT, which highlights the preferential role of AVT in the regulation of aggressive behavior already described for other species.
Peer review: yes
URI: http://hdl.handle.net/10400.12/4701
DOI: 10.1016/j.yhbeh.2016.05.020
ISSN: 0018-506X
Aparece nas colecções:BCOMP - Artigos em revistas internacionais

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