Fazli, Hasan, Daryanabard, Gholam Reza, Abdolmaleki, Shahram, Bandani, Gholamali (2013). Stock Management Implication of Caspian kutum (Rutilus frisii kutum Kamensky, 1901) in Iranian Waters of the Caspian Sea. , 1(2), 179-190.
Hasan Fazli; Gholam Reza Daryanabard; Shahram Abdolmaleki; Gholamali Bandani. "Stock Management Implication of Caspian kutum (Rutilus frisii kutum Kamensky, 1901) in Iranian Waters of the Caspian Sea". , 1, 2, 2013, 179-190.
Fazli, Hasan, Daryanabard, Gholam Reza, Abdolmaleki, Shahram, Bandani, Gholamali (2013). 'Stock Management Implication of Caspian kutum (Rutilus frisii kutum Kamensky, 1901) in Iranian Waters of the Caspian Sea', , 1(2), pp. 179-190.
Fazli, Hasan, Daryanabard, Gholam Reza, Abdolmaleki, Shahram, Bandani, Gholamali Stock Management Implication of Caspian kutum (Rutilus frisii kutum Kamensky, 1901) in Iranian Waters of the Caspian Sea. , 2013; 1(2): 179-190.

Stock Management Implication of Caspian kutum (Rutilus frisii kutum Kamensky, 1901) in Iranian Waters of the Caspian Sea

ECOPERSIA
Article 6, Volume 1, Issue 2 - Serial Number 4, 2013, Pages 179-190    PDF (495.47 K)
Authors
Hasan Fazli* 1; Gholam Reza Daryanabard1; Shahram Abdolmaleki2; Gholamali Bandani3
1Caspian Sea Ecology Research Center, Sari, Iran
2Inland Water Aquaculture Research Center, Anzali, Iran
3Inland Water Stocks Research Center, Gorgan, Iran
Abstract
Recently the previous Caspian ecosystem is in a catastrophic condition which caused changes in the absolute and relative abundance of the commercially important Caspian kutum (Rutilus frisii kutum) in Iranian waters. The paper presents estimates of yield-per-recruit and spawning biomass-per-recruit under various harvest strategies of Fmax, F0.1, F30%. It proposes a method for estimating acceptable biological catch (ABC) that accounts for large differences in the quality and quantity of information and available data. The current average Y/R (with F=0.61/y, and tc=3.2 y) was 218.3 g per recruit, which indicates that the fishery is operating below the maximum Y/R at 236.9 g when tc = 3.5 y. The Y/R was the highest at Fmax and F0.1, when tc = 4 y (244.8 g and 214.2 g), respectively. The F30% value was 0.85/y at tc of 4 y with the SB/R of 338.3 g. The Fcurrent (0.61/y at current tc is 3.2 y) is higher than the corresponding reference points, F0.1 (0.47/y) and F30% (0.46/y). The ABC of kutum was estimated at 7,850 mt in 2009-2010.
Keywords
Acceptable biological catch; Reference point; Rutilus frisii kutum; Spawning biomass per recruit; Yield per recruit
References
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