The variable monoaminergic outcomes of cleaner fish brains when facing different social and mutualistic contexts

PeerJ

article

Murilo S. de Abreu¹  João P.M. Messias²  Per-Ove Thörnqvist³  Svante Winberg³  Marta C. Soares² 

[1] Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria;CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto;Department of Neuroscience, Uppsala Universitet

关键词: Serotonin;    Dopamine;    Cleanerfish;    Mutualisms;    Physical contact;   

DOI  :  10.7717/peerj.4830

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

The monoamines serotonin and dopamine are important neuromodulators present in the central nervous system, known to be active regulators of social behaviour in fish as in other vertebrates. Our aim was to investigate the region-specific brain monoaminergic differences arising when individual cleaners face a client (mutualistic context) compared to when they are introduced to another conspecific (conspecific context), and to understand the relevance of visual assessment compared to the impact of physical contact with any partner. We demonstrated that serotoninergic activity at the diencephalon responds mostly to the absence of physical contact with clients whereas cerebellar dopaminergic activity responds to actual cleaning engagement. We provide first insights on the brain’s monoaminergic (region-specific) response variations, involved in the expression of cleaner fishes’ mutualistic and conspecific behaviour. These results contribute to a better understanding of the monoaminergic activity in accordance to different socio-behavioural contexts.

【 授权许可】

CC BY