STUDY ON THE STURGEON CATCH COMPOSITION IN CASPIAN SEA (IRAN, RUSSIA, KAZAKHSTAN AND TURKMENISTAN WATERS) DURING MARINE SURVEY IN SUMMER 2004-2005

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TAVAKOLI MAHMOUD; BEHROUZ KHOUSH GHALB M.R.; HADADI MOGHADAM K.; PAZHAND Z.A.; HALAJIAN A.

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Journal: JOURNAL OF BIOLOGY SCIENCE Year:2008 | Volume:2 | Issue:1 (SERIES NO. 4) Page(s): 9-17

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Title

STUDY ON THE STURGEON CATCH COMPOSITION IN CASPIAN SEA (IRAN, RUSSIA, KAZAKHSTAN AND TURKMENISTAN WATERS) DURING MARINE SURVEY IN SUMMER 2004-2005

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Keywords

PERSIAN STURGEONQ3

STOCK ASSESSMENTQ3

CASPIAN SEAQ3

TRAWLQ3

Abstract

According to confirmations of commission on aquatic bioresources of the CASPIAN SEA and insist of convention on international trade in endangered species of wild fauna & flora (CITES), all Caspian littoral states assigned to participate in sturgeon STOCK ASSESSMENT survey in order to study and determine the sturgeon stocks, their absolute abundance, percentage of catch composition and relative abundance of different sturgeon species. Following this confirmation, the experts of Iranian Fisheries Research organization and KaspNIRKh Institute, prepared the proposal & decided to apply TRAWL. In this regard, a common survey carried out during summer 2004 and 2005 with cooperation of Caspian littoral states in north, middle and southern parts of CASPIAN SEA (except Azerbaijan Republic) by TRAWLing. The number of stations was 234 and 204 stations in 2004 and 2005, respectively. Selection of sampling stations in Iran was carried out through stratified random design and in Russia, KaspNIRKh Institute had stable stations. Two types of bottom TRAWLs were used for sampling (9m TRAWL for depth under l0m and 24.7m TRAWL for above 10m depth). In 2004 summer survey, 1208 specimens captured which contained 889 PERSIAN STURGEONs, 234 Russian sturgeons and 58 stellate sturgeons, 14 Beluga and 3 Ship sturgeons. In 2005 summer survey totally 436 sturgeon captured which includes 341 PERSIAN STURGEON, 57 Russian sturgeon and 30 Stellate sturgeon, 7 Beluga and 1 Ship sturgeon. Catch composition in 2004 summer survey comprised 74.42% PERSIAN STURGEON, 19.37% Russian sturgeon, 4.8% stellate sturgeon, 1/16% Beluga and 0.25% Ship sturgeon. In 2005 summer survey, catch composition was 78.21% PERSIAN STURGEON, 13.07% Russia sturgeon, 6.89% stellate sturgeon, 1.6% Beluga and 0.23% Ship sturgeon.

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APA: Copy

TAVAKOLI, MAHMOUD, BEHROUZ KHOUSH GHALB, M.R., HADADI MOGHADAM, K., PAZHAND, Z.A., & HALAJIAN, A.. (2008). STUDY ON THE STURGEON CATCH COMPOSITION IN CASPIAN SEA (IRAN, RUSSIA, KAZAKHSTAN AND TURKMENISTAN WATERS) DURING MARINE SURVEY IN SUMMER 2004-2005. JOURNAL OF BIOLOGY SCIENCE, 2(1 (SERIES NO. 4)), 9-17. SID. https://sid.ir/paper/164154/en

Vancouver: Copy

TAVAKOLI MAHMOUD, BEHROUZ KHOUSH GHALB M.R., HADADI MOGHADAM K., PAZHAND Z.A., HALAJIAN A.. STUDY ON THE STURGEON CATCH COMPOSITION IN CASPIAN SEA (IRAN, RUSSIA, KAZAKHSTAN AND TURKMENISTAN WATERS) DURING MARINE SURVEY IN SUMMER 2004-2005. JOURNAL OF BIOLOGY SCIENCE[Internet]. 2008;2(1 (SERIES NO. 4)):9-17. Available from: https://sid.ir/paper/164154/en

IEEE: Copy

MAHMOUD TAVAKOLI, M.R. BEHROUZ KHOUSH GHALB, K. HADADI MOGHADAM, Z.A. PAZHAND, and A. HALAJIAN, “STUDY ON THE STURGEON CATCH COMPOSITION IN CASPIAN SEA (IRAN, RUSSIA, KAZAKHSTAN AND TURKMENISTAN WATERS) DURING MARINE SURVEY IN SUMMER 2004-2005,” JOURNAL OF BIOLOGY SCIENCE, vol. 2, no. 1 (SERIES NO. 4), pp. 9–17, 2008, [Online]. Available: https://sid.ir/paper/164154/en

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