Stock assessment of Azov-Black Sea anadromous pontic shad in terms of data lacking (2004-2020

The population biomass, fishing mortality dynamics and reference points of the rational exploitation Black-Azov sea shad during period 2004-2020 were evaluated using JABBA surplus production model in “catch-only” version. IUU estimation preliminary parametrization by CMSY was performed to improve assessment accuracy. According output, stock biomass interval 1315-1341 t, range 0,03-0,38. During implementation review results there 3 status identified: 2004-2009 – moderate recovery (from 1315 tons 3347 tons), 2010-2013 stable (at level 3300-3400 2014-2020 reduction 3353 1791 tons). is due a increase mortality. Currently, since 2018, trend increasing above target exploitation, leads (in 2020 fells below first time). authors, one main reason human activity, that fisheries. Authors note are actions required annihilate illegal, unregistered unreported fisheries shad.