The survey of seasonal changes of cortisol, Glucose and Ionic in Farmed female Stellate Sturgeon, Acipenser stellatus
Subject Areas : New Technologies in Aquaculture Development
Keywords: Cortisol, glucose, Season, Keywords: Farmed Stellate Sturgeon, Ion,
Abstract :
Stellate sturgeon (Acipencer stellatus) is one of the important and commercial species of Caspian Sea. 24 farmed Acipenser stellatus breeders which are all 8 years old (16 females and 8 males) with mean weight of 5.16±0.52 and average length 111.59±2.63 in females and mean weight of 3.31±0.32 and average length 101.88±3.88 in females were investigated from spring 2005 until winter 2006.After bleeding of caudal vein, cortical, glucose and ionic (Na, K, Mg, Cl, and Ca) levels of blood samples were measured seasonally. Results showed that maximum cortical levels were in summer and was a significant difference. Though, there were no significant differences in species. In ionic, Mg, Ca, Na, and K, there was no significant difference in the species. A significant difference was seen in female during winter. For other indices a certain season could not be spotted. In relationship with other indices can not certainly select a season. Glucose was not different in species. The maximum level of glucose was observed in males during spring. Although maximum Ca level was in summer and winter, no significant difference in Ca level of males was observed. Maximum level of Na in spring and Cl in winter was seen in females and males, respectively. According to results cortical was the best indices in relationship with physiological condition of farmed species in various seasons.
_||_