Abstract
Smolts of Caspian brown trout were introduced to water with salinity of 12g/l to find hematological and biochemical responses in relation to sea-water acclimation. A total of 360 fish(6.2 ± 0.13 g) were randomly distributed into 6 tanks in groups of 20 with three replicates (totally 12 tanks). Three groups were included as experimental treatments and one group allocated to control. In experimental treatment, fish were acclimated to water with 12 mg/l salinity for 48 h. fish of control group were not acclimated to sea water salinity. After acclimation in sea water, the higher values of plasma cortisol and glucose were found in fish acclimated to sea water compared to control group (P 0.05). Also, plasma protein levels were lower in fish acclimated to seawater compared to control (P Keywords:Red blood cell, salinity, stress, Caspian brown trout
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