Changes on plasmatic electrolytes and behavior of freshwater fish, Luciobarbus bocagei, as a function of acute copper exposure


  • Fernandes Conceição UFPB/CCEN, João Pessoa, Paraíba, Brasil
  • Touir Ahlem Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
  • Teixeira Amilcar Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.



Plasma levels of Na+, K+ and Ca2+ were evaluated in fish exposed / not exposed to sublethal concentrations of Cu to assess adverse effects on osmoregulation as well as their ability to reverse these levels. Acute toxicity tests were performed using barbells (Luciobarbus bocagei) under two different concentrations of Cu. Barbells exposed to Cu showed ionic imbalance, respiratory difficulties, mortality and reduced value of K. According to the results, plasma levels of K+ and Ca2+increase, while plasma levels of Na+ decrease, allowing the fish an osmotic adjustment and a reduction in susceptibility to Cu. Under the conditions of this experiment, fish also showed the ability to reverse electrolyte levels when they are no longer exposed to Cu; however, dependent on exposure concentration.


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Biografia do Autor

Fernandes Conceição, UFPB/CCEN, João Pessoa, Paraíba, Brasil

Possuo graduação em Ciências Biológicas (2000) pela Universidade do Estado do Rio de Janeiro, mestrado (2003) e doutorado (2007) em Ecologia pela Universidade do Estado do Rio de Janeiro. Fiz pós-doutorado no Departamento de Botânica da Universidade Federal do Rio de Janeiro. Sou professora associada do Departamento de Sistemática e Ecologia da Universidade Federal da Paraíba, ministrando disciplinas na área de Ecologia na graduação e na Pós Graduação (Prodema - Programa Regional de Pós-Graduação em Desenvolvimento e Meio Ambiente). Sou editora de área da revista Gaia Scientia. Tenho experiência na área de Ecologia, com ênfase em Ecologia Vegetal e Etnobotânica, atuando principalmente nos seguintes temas: fenologia, biologia reprodutiva, polinização, interação animal/ planta e relações entre espécies simpátricas. Desde 2010, tenho desenvolvido pesquisas na área de etnobotânica e sua relação com a conservação de recursos vegetais. Email de contato:


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Como Citar

CONCEIÇÃO, F.; AHLEM, T.; AMILCAR, T. Changes on plasmatic electrolytes and behavior of freshwater fish, Luciobarbus bocagei, as a function of acute copper exposure. Gaia Scientia, [S. l.], v. 13, n. 1, 2019. DOI: 10.22478/ufpb.1981-1268.2019v13n1.46435. Disponível em: Acesso em: 24 jan. 2022.



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