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Initial salinity tolerance and ion-osmotic parameters in juvenile Russian Sturgeon, Acipenser gueldenstaedtii, Brandt, 1833 | ||
| Iranian Journal of Fisheries Sciences | ||
| مقاله 6، دوره 10، شماره 4، دی 2011، صفحه 607-615 اصل مقاله (561.31 K) | ||
| شناسه دیجیتال (DOI): 10.22092/ijfs.2018.114167 | ||
| نویسندگان | ||
| S. M. V. Farabi* ؛ S. Najafpour؛ M. Ghiasi؛ H. Samadi | ||
| چکیده | ||
| The salinity tolerance, hematological and hydromineral regulation capabilities of juvenile Russian sturgeon (Acipenser gueldenstaedtii) were investigated in different ages and sizes in freshwater (FW: 0.05) but differed in experimental media (p < 0.05). Signifi cant differences were observed between the levels of plasma ion concentrations in different media (p < 0.01). Plasma Na+, K+ and Ca+2 concentrations were higher than those of FW media, but lower than in CSW media (p < 0.05). Plasma Mg+2 concentrations were lower than those of FW and CSW media, but near to EW media (p < 0.05). The hematocrit mean cell volume decreased but mean cell hemoglobin concentration, osmolarity and levels of plasma cortisol were increased from FW media to CSW media (p < 0. 05). The hemoglobin concentration (Hb), the amount of hemoglobin per erythrocyte, red and white blood cells count did not change (p>0.05). However, the results showed that the above parameters in fish fingerlings did not return to initial values in the new environment and then physiological changes happened. | ||
| کلیدواژهها | ||
| ACIPENSER GUELDENSTAEDTII؛ Hematological parameters؛ Ion؛ Cortisol؛ Osmolarity | ||
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آمار تعداد مشاهده مقاله: 275 تعداد دریافت فایل اصل مقاله: 189 |
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