Social challenge increases cortisol and hypothalamic monoamine levels in matrinxã (Brycon amazonicus)
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
07/12/2015
07/12/2015
2015
|
Resumo |
The neural circuitry for social behavior and aggression appears to be evolutionarily conserved across the vertebrate subphylum and involves a complex neural network that includes the hypothalamus as a key structure. In the present study, we evaluated the changes in monoamine levels in the hypothalamus and on serum cortisol and plasma glucose of resident matrinxã (Brycon amazonicus) submitted to a social challenge (introduction of an intruder in their territory). The fight promoted a significant increase in hypothalamic 5-HT, NA and DA levels and on the metabolites 5-HIAA and DOPAC, and decreased 5-HIAA/5-HT and DOPAC/DA ratios in resident fish. Furthermore, an increase in serum cortisol and plasma glucose was also observed after the fight. Resident fish presented a high aggressiveness even with increased 5-HT levels in the hypothalamus. The alteration in hypothalamic monoaminergic activity of matrinxã suggests that this diencephalic region is involved in aggression and stress modulation in fish; however, it does not exclude the participation of other brain areas not tested here. |
Formato |
1501-1508 |
Identificador |
http://dx.doi.org/10.1007/s10695-015-0102-5 Fish Physiology And Biochemistry, p. 1501-1508, 2015. 1573-5168 http://hdl.handle.net/11449/131333 10.1007/s10695-015-0102-5 26205527 |
Idioma(s) |
eng |
Publicador |
Springer |
Relação |
Fish Physiology And Biochemistry |
Direitos |
closedAccess |
Palavras-Chave | #Aggression #Cortisol #Dopamine #Hypothalamus #Noradrenaline #Serotonin #Int |
Tipo |
info:eu-repo/semantics/article |