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40cm), optimum size and mega-spawners
were 62.0, 40.9 and 12.5% in 1991-92 which decreased less than 50, 38.2 and 8%, in the
years 1992-2011, respectively. The length structure is a matter of concern. Therefore, for
reservation and rebuilt of kutum in the Caspian Sea, the target was to let all (100%) fish
spawn at least once, using bigger mesh size in cod end (e.g. 35mm, during whole fishing
season). The aim was also to implement a fishing strategy that result no (0%) mega-spawners
being caught, and the main catch focus on optimum length.
*Corresponding author]]>
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