Data/hora: 01/06/2024 11:20:09

Provedor de dados: | 65
País: | Brazil
Título: | Net ion fluxes and ammonia excretion during transport of Rhamdia quelen juveniles
Autores: | Garcia,Luciano de Oliveira; Barcellos,Leonardo José Gil; Baldisserotto,Bernardo.
Data: | 2015-10-01
Ano: | 2015
Palavras-chave: | Fish transport; Ionoregulation; Load density.
Resumo: | The objective of this study was to verify net ion fluxes and ammonia excretion in silver catfish transported in plastic bags at three different loading densities: 221, 286 and 365g L-1 for 5h. A water sample was collected at the beginning and at the end of the transport for analysis of water parameters. There was a significant positive relationship between net ion effluxes and negative relationship between ammonia excretion and loading density, demonstrated by the following equations: Na+: y-24.5-0.27x, r2=0.99, Cl-: y=40.2-0.61x, r2=0.98, K+: y=8.0-27.6x, r2=0.94; ammonia excretion: y=-11.43+0.017x, r2=0.95, where y: net ion flux (mmol kg-1 h-1) or ammonia excretion (mg kg-1 h-1) and x: loading density (g). Therefore, the increase of loading density increases net ion loss, but reduces ammonia excretion during the transport of silver catfish, indicating the possibility of ammonia accumulation
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001854
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20141420
Formato: | text/html
Fonte: | Ciência Rural  v.45 n.10 2015
Fonte: | info:eu-repo/semantics/openAccess