caa a22 4500 606229876 CHVBK 20210128101211.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10695-015-0102-5 doi (NATIONALLICENCE)springer-10.1007/s10695-015-0102-5 Social challenge increases cortisol and hypothalamic monoamine levels in matrinxã ( Brycon amazonicus ) [Elektronische Daten] [Carla Wolkers, Mônica Serra, Elisabeth Urbinati] 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. Springer Science+Business Media Dordrecht, 2015 Aggression nationallicence Cortisol nationallicence Dopamine nationallicence Hypothalamus nationallicence Noradrenaline nationallicence Serotonin nationallicence Wolkers Carla Aquaculture Center of Unesp, University of São Paulo State, Access Road Professor Doutor Paulo Donato Castellane, 14884-900, Jaboticabal, SP, Brazil aut Serra Mônica Aquaculture Center of Unesp, University of São Paulo State, Access Road Professor Doutor Paulo Donato Castellane, 14884-900, Jaboticabal, SP, Brazil aut Urbinati Elisabeth Aquaculture Center of Unesp, University of São Paulo State, Access Road Professor Doutor Paulo Donato Castellane, 14884-900, Jaboticabal, SP, Brazil aut Fish Physiology and Biochemistry Springer Netherlands 41/6(2015-12-01), 1501-1508 0920-1742 41:6<1501 2015 41 10695 https://doi.org/10.1007/s10695-015-0102-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10695-015-0102-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wolkers Carla Aquaculture Center of Unesp, University of São Paulo State, Access Road Professor Doutor Paulo Donato Castellane, 14884-900, Jaboticabal, SP, Brazil aut NATIONALLICENCE 700 1- Serra Mônica Aquaculture Center of Unesp, University of São Paulo State, Access Road Professor Doutor Paulo Donato Castellane, 14884-900, Jaboticabal, SP, Brazil aut NATIONALLICENCE 700 1- Urbinati Elisabeth Aquaculture Center of Unesp, University of São Paulo State, Access Road Professor Doutor Paulo Donato Castellane, 14884-900, Jaboticabal, SP, Brazil aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Springer Netherlands 41/6(2015-12-01), 1501-1508 0920-1742 41:6<1501 2015 41 10695