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Failure of cortisol response in induced capture handling stress and carrageenin in Piaractus mesopotamicus Holmberg, 1887 (Osteichthyes: Characidae)
Provedor de dados: 3
Autores: Martins, Maurício Laterça; UNESP; Moraes, Flávio Ruas de; UNESP; Moraes, Julieta Rodini Engrácia de; UNESP; Malheiros, Euclides Braga; UNESP.
In this assay the effect of consecutive stress handling and carrageenin injection (500 &amp;micro;g in 0.5 ml of saline solution) or 0.5 mL of saline on Piaractus mesopotamicus Holmberg, 1887 (Osteichthyes: Characidae) was evaluated. The fish were subjected to 30 s capture handling stress applied repeatedly at 60 min intervals over 6 h. Blood sampling was as following: time 0: basal blood sampling and first stress; time 1: injection with carrageenin or saline and sampling after 5 min; time 2: stress and sampling after 5 min; time 3: stress and sampling after 5 min; time 4: stress and sampling after 5 min; time 5: blood sampling after 90 min. Circulanting cortisol levels showed significant decrease in time 4 and 5 in both carageenin and saline injected...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas carragenina; Cortisol; Estresse; Glicose; Leucócitos; Piaractus mesopotamicus; Trombócitos 2.00.00.00-6 Ciências Biológicas.
Ano: 2000
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2946