Fluoxetine (FLX) is a selective serotonin (5-HT) reuptake inhibitor known for its effects modifying aggressiveness, personality traits, and anxiety-like behaviors. The aim of the present study was to evaluate the influence of the acute treatment, by immersion, with FLX on aggressive behavior of resident Brycon amazonicus fish. Fish pretreated with FLX presented an increase in aggressiveness, evidenced by the increase on the number of bites and chases against the intruder and a decrease in latency for the first attack, when compared to control fish. Together with previous studies, these results show the complexity of the neural modulation of the aggressive behavior in fish by 5-HTergic system.
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http://dx.doi.org/10.1007/s10695-016-0329-9 | DOI Listing |
Morphologie
December 2024
Unesp Aquaculture Center, Sao Paulo State University (Unesp), Jaboticabal, SP, Brazil; Department of Biological Sciences, Sao Paulo State University (Unesp), Bauru, SP, Brazil.
Brycon amazonicus, a fish species widely distributed along freshwater rivers in Latin America, is important in maintaining ecological balance. Although some morphological/physiological aspects of B. amazonicus have been reported, the cardiac histomorphology of this species remains poorly understood.
View Article and Find Full Text PDFA new genus of dactylogyrid, Peruanella n. gen., is proposed to accommodate Peruanella madredediosensis n.
View Article and Find Full Text PDFVet Res Commun
November 2024
Department of Genetics and Evolution, Federal University of Sao Carlos, Rod. Washington Luiz, Km 235, Sao Carlos, CEP 13565-905, SP, Brazil.
Nitrite is usual in water of intensive rearing systems. Considering its oxidative harmful potential, it was selected to challenge matrinxa Brycon amazonicus reared in sustained swimming (SS) (with flowing water adjusted to speed at 1.0 BL seg (long-duration aerobic metabolic characteristic) and evaluate any beneficial effect of such rearing system to enhance the fish potential to cope with this oxidant stressor in fish farmings.
View Article and Find Full Text PDFBraz J Biol
October 2024
Universidade Estadual de Londrina - UEL, Departamento de Zootecnia e Programa de Pós-Graduação em Ciência Animal, Londrina, PR, Brasil.
Brycon amazonicus is a species native to Brazil, with significant socioeconomic importance and immense potential for fish production. It is the second most cultivated species in the Amazon. The lack of specific molecular markers limits genetic research.
View Article and Find Full Text PDFSyst Parasitol
January 2024
Laboratorio de Genómica y Biología Evolutiva, Instituto de Ciencias y Tecnología, Universidad Ricardo Palma (URP), Av. Alfredo Benavides 5440,Santiago de Surco, Lima, Peru.
Two new dactylogyrid species were found infecting the gill filaments of two freshwater fishes collected in the Amazon River basin around Madre de Dios, Peru, namely, Demidospermus wilveri n. sp. from Loricaria sp.
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