Data/hora: 11/06/2024 06:51:21

Provedor de dados: | Ciência Rural
País: | Brazil
Título: | Low water hardness and pH affect growth and survival of silver catfish juveniles
Autores: | Copatti,Carlos Eduardo; Garcia,Luciano de Oliveira; Kochhann,Daiani; Cunha,Mauro Alves da; Becker,Alexssandro Geferson; Baldisserotto,Bernardo.
Data: | 2011-08-01
Ano: | 2011
Palavras-chave: | Acidic water; Alkaline water; Calcium; Growth; Mortality; Rhamdia quelen.
Resumo: | The objective of this study was to investigate the effects of exposure to low water hardness (0, 25 and 50mg CaCO3L-1) into the 6.0-8.0 pH range to silver catfish juveniles (Rhamdia quelen) survival and growth after 32 days. Juveniles kept at zero water hardness presented higher mortality at pH 7.0 and 8.0 than those submitted to other treatments. Weight of juveniles exposed to pH 6.0 and zero water hardness was significantly higher than those kept at the same water hardness and other pH. Survival and growth of juveniles exposed to 25 and 50mg CaCO3 L-1 was not affected in the 6.0-8.0 pH range. Therefore, the best water hardness for silver catfish juveniles growth is 25-50mg CaCO3 L-1 and at low water hardness (next zero) pH must be reduced.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000800030
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782011005000101
Formato: | text/html
Fonte: | Ciência Rural  v.41 n.8 2011
Fonte: | info:eu-repo/semantics/openAccess