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Theoretical scenarios for research and development needs to save dwindling sturgeon populations in the Caspian Sea

Theoretical scenarios for research and development needs to save dwindling sturgeon populations... By C.P. Mathews1,2, N. Peacock1 and R. Gilkolei3 Sustainable Management of Caspian Fisheries Project (SMCFP); 2C.P. Mathews may be contacted at: christopherpmathews@yahoo.co.uk; 3Iranian Fisheries Research Organisation. 1EU/TACIS Summary Current landings of Caspian sturgeon fell from a peak of about 30,000 tonnes in 1977 to about 1,000 tonnes in 2002. Maximum Sustainable Yield (MSY) of Caspian sturgeon is unknown but may be in the range of about 22,500 t/yr. Total Allowable Catches (TACs) fell from about 15,000 t/yr in 1992 to =500 t/yr in 20022004. It is widely believed that Illegal Unreported and Unregulated (IUU) sturgeon fishing accounts for 90% of real sturgeon landings, but estimates of IUU landings were not included in any TAC assessments. FAO (2004) reported that assessments were not transparent. Rough estimates of stock recovery based on 2002-04 landings and a doubling time of about 14 years suggest that, even in the unlikely event of a total moratorium on legal and (IUU) fishing for about 50 years, stocks could only provide sustainable landings of 4,000 to 8,000 t/yr. Clearly, total recruitment was insufficient to support total effort expended by legal and IUU fishing. In November 1995, after several years of preliminary work and regional consultations, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Theoretical scenarios for research and development needs to save dwindling sturgeon populations in the Caspian Sea

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Publisher
Wiley
Copyright
Copyright © 2006 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.2007.00941.x
Publisher site
See Article on Publisher Site

Abstract

By C.P. Mathews1,2, N. Peacock1 and R. Gilkolei3 Sustainable Management of Caspian Fisheries Project (SMCFP); 2C.P. Mathews may be contacted at: christopherpmathews@yahoo.co.uk; 3Iranian Fisheries Research Organisation. 1EU/TACIS Summary Current landings of Caspian sturgeon fell from a peak of about 30,000 tonnes in 1977 to about 1,000 tonnes in 2002. Maximum Sustainable Yield (MSY) of Caspian sturgeon is unknown but may be in the range of about 22,500 t/yr. Total Allowable Catches (TACs) fell from about 15,000 t/yr in 1992 to =500 t/yr in 20022004. It is widely believed that Illegal Unreported and Unregulated (IUU) sturgeon fishing accounts for 90% of real sturgeon landings, but estimates of IUU landings were not included in any TAC assessments. FAO (2004) reported that assessments were not transparent. Rough estimates of stock recovery based on 2002-04 landings and a doubling time of about 14 years suggest that, even in the unlikely event of a total moratorium on legal and (IUU) fishing for about 50 years, stocks could only provide sustainable landings of 4,000 to 8,000 t/yr. Clearly, total recruitment was insufficient to support total effort expended by legal and IUU fishing. In November 1995, after several years of preliminary work and regional consultations,

Journal

Journal of Applied Ichthyology – Wiley

Published: Dec 1, 2006

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