Net ion fluxes and ammonia excretion during transport of Rhamdia quelen juveniles
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
Main Authors: | Garcia,Luciano de Oliveira, Barcellos,Leonardo José Gil, Baldisserotto,Bernardo |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Universidade Federal de Santa Maria
2015
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001854 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Ion fluxes in silver catfish (Rhamdia quelen) juveniles exposed to different dissolved oxygen levels
by: Rosso,Felipe Link de, et al.
Published: (2006) -
Antipredator and alarm reaction responses of silver catfish (Rhamdia quelen) juveniles exposed to waterborne ammonia
by: Weber,Paula, et al.
Published: (2012) -
Protein to energy ratios and cost, performance, and ammonia excretion in juvenile jundiá (Rhamdia quelen), South American catfish.
by: FREITAS, L. E. L. de, et al.
Published: (2021-05-25) -
Protein to energy ratios and cost, performance, and ammonia excretion in juvenile jundiá (Rhamdia quelen), South American catfish
by: Freitas,Luiz Eduardo Lima de, et al.
Published: (2021) -
Waterborne ammonia and silver catfish, Rhamdia quelen: survival and growth
by: Miron,Denise dos Santos, et al.
Published: (2011)