Induced Spawning of Schizothorax zarudnyi (Cyprinidae) By Using Synthetic Hormones (Ovaprim and HCG)

Snow trout, Schizothorax zarudnyi is native to Sistan district, Sistan and Baluchistan province, Southeast of I.R. Iran. In order to achieve the possibility of artificial breeding of Schizothorax zarudnyi using synthetic hormones (HCG and Ovaprim), this study was carried out. 97 wild fish (44 females and 53 males) were randomly allocated in five treatment groups. groups 1- 4 received 1.5 ml Ovaprim/Kg B.W., Ovaprim + HCG (1.2 ml/Kg + 5000 IU/Kg), Ovaprim + HCG (1.5 ml/Kg + 1300 IU/Kg), 2000 HCG mg/Kg respectively and the fifth NaCl 0.3 mg/Kg as control group. The results showed mean working fecundity for 1, 2, 3, 4 and 5 groups was 39531±7802, 18625±9704, 15682±5982, 0 and 0, respectively. Latency period was 36.2±3.77, 12.33±0.66 and 30.2±2.95, conversion percentage of dry egg to eyed egg was 88.97±0.9, 73.19±2.04 and 75.26±3.90, conversion percentage of eyed egg to larvae was 81.93±1.15, 75.67±0.19 and 71.03±1.03 for 1, 2 and 3 groups, respectively. There were significant differences in the fecundity, latency period and some other parameters among the treated groups using Ovaprim solely and the control group (P < 0.05). The results of this investigation clearly suggested that the Ovaprim is the most suitable for inducing spawning in Snow trout.

Induced spawning % Schizothorax zarudnyi % Sistan-Iran % Synthetic hormone