Journal of Fisheries

Journal of Fisheries

The Comparison of Growth Performance and Survival Rate of Sterlett (Acipenser ruthenus) and Siberian Sturgeon (Acipenser baerii) From Larvae to Fingerling

Document Type : Research Paper

Authors
Sajjad Deravi Ghaziani 1
Ayoub Yousefi Jourdehi 2
Rezvanollah Kazemi 3
Mohsen Pourasadi 4
1 BS.c Educated from Higher education and training center of Mirzakoochakkhan, Guillan, Rasht, Iran
2 Researcher of International Sturgeon Research Institute of the Caspian Sea, Guillan, Rasht, Iran
3 Member of Scientific Board in International Sturgeon Research Organization, Guillan, Rasht, Iran
4 Member of Scientific Board in Higher Education Center of Mirzakoochakkhan Guillan, Rasht, Iran
10.22059/jfisheries.2014.50352
Abstract
This study was carried out on the growth and survival rates of Acipenser ruthenus and from larvae to fingerling stages. A total of 4000 larvae from each species were provided and stocked in 2 fiberglass tanks (2000 larvae in each tank with volume 3.2 m3). Food Conversion Ratio (FCR) for both species was 3.07 ± 0.3 in this period, which showed no significant difference statistically significantly (P>0.05). Based on these results, the mean weight of Acipenser ruthenus larvae was 21.8 ± 0.82 mg at the start phase of activated feeding and reached to 3 ± 0.35 g in fingerlings at the end after 76 days. The mean weight of Siberian sturgeon larvae was 23.7 ± 2.06 mg at the beginning of the study and reached to 2.8 ± 0.19 g at the end. Specific growth rate (SGR) in Acipenser ruthenus and Acipenser baerii was 2.77 ± 0.02% and 2.72 ± 0.02 percent, respectively that showed no significant difference. Survival rate in Acipenser ruthenus and Acipenser baerii were 45.5 ± 0.016 and 32.5 ± 0.15 that showed significant difference (P>0.05). Therefore, survival rate indices in Acipenser ruthenus were better than Acipenser baerii stocked in fiberglass tanks.
Keywords
Acipenser ruthenus
A. baerii
Larvae
activated feeding
fiberglass
Growth parameters
Subjects