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Riffel,Ana Paula Konzen; Jardim,Sinara; Pires,Marcela Ciprandi; Bertagnolli,Bruna; Corrêa,Bruna Renata Silva; Ré,Francine Cenzi de; Zambra,Francis Maria Bao; Lubini,Greice; Garcia,Luciano Oliveira; Baldisserotto,Bernardo. |
The aim of this study was to investigate the preferred pH in silver catfish Rhamdia quelen acclimated to different pH. Fish were acclimated for one week at pH 4.2±0.1, 5.2±0.1, 6.3±0.1, 7.2±0.1, 8.0±0.1, and 9.0±0.1 and after this period, transferred to a polyethylene tube with a pH gradient from 3.5 to 10.0. The position of the fish in the pH gradient was observed 1, 6 and 12 hours after transference. Results indicated that acclimation to different pH did not change pH preference of silver catfish (pH 7.0-7.6), occurring only a transitory variation around 6 hours after transference. This pH preference coincides with the best pH indicated in the literature for growth of this species. |
Tipo: Info:eu-repo/semantics/report |
Palavras-chave: PH preference; Water quality; Behavior. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000500012 |
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