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:: Volume 26, Issue 1 (4-2017) ::
isfj 2017, 26(1): 203-206 Back to browse issues page
Evaluation and comparison of percent change in species composition and Sturgeon CPUE in 2011and 2012 South coast Caspian Sea, province of Golestan
M. Larijani1 , K. Amini1 , G.A. Bandani1 , M.R. Behrooz Khoosh Ghalb2 , S. Sharifi1 , S.M. Aghilinejad1
1- Inland Waters Aquatic Stocks Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Gorgan
2- International Sturgeon Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization, Gorgan
Abstract:   (5746 Views)

The marine survey for sturgeon stock assessment was conducted to estimate the abundance of each species, total abundance and their percentage composition.In this study, a sample of 5 stations from the four fishing Golestan province which since 1380, the Iranian Fisheries as fisheries was done selected. Sampling was carried out using the gillnet. The sampling in 2011, 247 specimens including 105 A. persicus specimens, 14 A. guldenstaedti, 44 A. stellatus, 71 Huso huso and 13 A. nudiventris were caught. In 2012, of  281 specimens, 143 A. persicus, 8 A. guldenstaedti, 19 A. stellatus,19 Huso huso and 52 A. nudiventris  were caught. Species composition in 2011, including 42 percent of A. persicus, 6 percent of A. guldenstaedti, 18 percent A. stellatus, 29 percent Huso huso and 5 percent A. nudiventris. In 2012, Species composition, including 59 percent of A. persicus, 3 percent A. guldenstaedti, 8 percent, A. stellatus, 22 percent Huso huso and 8 percent was A. nudiventris. The average length of A. persicus in 2011, 162.62±19.8 cm, A. guldenstaedti 149.45±16.26 cm, A. stellatus 126.4±17.42 cm, Huso huso 167.69±60.72 cm and A. nudiventris 139.06±12 cm. In 2012, the average length of A. persicus and A. guldenstaedti  to the 144.55±42.12 and 145.8±13.92 cm. The average weight of A. persicus in 2011, 22.38±8.57 gr, A. guldenstaedti 19.24±6.55 gr and A. stellatus 8.70±2.76 gr. In 2012, the average weight of A. persicus 18.66±11.43 gr and A. guldenstaedti  20±7.08 gr. The catch per unit effort (CPUE) in 2011 sampeling, equivalent to 5.23 and sampling in 2013 was equivalent to the 5.73.
 
 

Keywords: Sturgeon, Stock assessment, South Caspian Sea, Golestan province.
Full-Text [PDF 427 kb]   (1878 Downloads)    
Type of Study: Research | Subject: ارزيابي ذخاير و پويايي جمعيت
Received: 2016/01/8 | Accepted: 2017/06/20 | Published: 2017/06/20
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Larijani M, Amini K, Bandani G, Behrooz Khoosh Ghalb M, Sharifi S, Aghilinejad S. Evaluation and comparison of percent change in species composition and Sturgeon CPUE in 2011and 2012 South coast Caspian Sea, province of Golestan. isfj 2017; 26 (1) :203-206
URL: http://isfj.ir/article-1-1478-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 26, Issue 1 (4-2017) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

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