BlOُNERGET‘lC OF OSMOREGULATION IN Liza abu .JUVINlLES DURING SALINITY .ACCUMULATION

Author

Abstract
Several physiological variables related to salinity acclimation in Liza abu were
examined, using oxygen consumption rate and glucose level as an indication of
osmoregulatory energetic. l~'reshwater acclimated I.. aim were transferred to two salinity (7
and 15 g/L) oxygen consumption rates. glucose levels and plasma ion concentrations (Na i.
K’) were measured after three days of transfer to higher salinity. Plasma ion concentrations
were elevated after transfer. Blood glucose level increased after transfer to salinity 7 g/L
while its level decreased in salinity 15 g/L compared to its level in freshwater. Oxygen
consumption rate increased one and half time of that in freshwater but no significant
difference were noticed in oxygen consumption rates between fish in both salinities (7 and
15 g/L) .'l'he amount of metabolic energy consumed during salinity acclimation were also
determined. The result showed that the physiological changes associated with salinity
acclimation impose a significant short - term energetic cost.

Keywords


Article Title العربیة

استهلاك الطاقة للتنظيم الازموزي في صغار اسماك الخشني اثناء الاقلمة الملحية

Author العربیة

سمية محمد احمد
Volume 4, Issue 1
Spring 2005
Page 9-16

  • Receive Date 01 June 2005
  • Revise Date 20 June 2005
  • Accept Date 25 June 2005
  • Publish Date 28 June 2005