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சுருக்கம்

Seasonal Changes in Serum Calcium and 17β-Estradiol Levels in Persian Sturgeon, Acipenser persicus

Mahboubeh Hosseinzadeh ,Mohammad Reza Imanpoor ,Ali Shabani ,Hamed Nekoubin *

Concentrations of total serum calcium and17β-estradiol (E2) were measured during four stages of ovarian growth in Persian sturgeon, Acipenser persicus. Total calcium and E2 increased from stage II (cortical alveolus) and reached their highest levels (6.67 ± 1.15 mg/dl and 5.33 ± 1.06 ng/ml, respectively) during stage III (vitellogenic). Levels of both total calcium and E2 decrease during stage IV (ripe). A decline in serum calcium level was observed postspawning (stage V). Total serum calcium exhibited a linear relationship (r2=0.6789) with plasma E2 (P<0.01). Both E2 and total serum calcium can be utilized to identify mature vitellogenic (stage III) females in sturgeon broodstocks