Reproduction, stocks assessment and walleye pollock fishery in Navarin area of the Bering Sea

Abstract

The aim of the work is to summarize information about the reproduction, stock dynamics and walleye pollock fishery in the Navarin region of the Bering Sea.Methods used: methods and models of the fishery science, allowing to assess the state of the stock in conditions of increased data noise and specific features of the entry of generations into the fishing stage.Result: the updated estimates of walleye pollock stock status in the Navarin region of the Bering Sea are given. The available data allow us to state that in this area of the Bering Sea there are reproductively isolated groups of winter and spring spawning walleye pollock.Novelty: it was shown that trends in the biomass dynamics of walleye pollock spawning stock in the Navarin region and the East Bering Sea stock changed synchronously in 1995–2011 and in 2019–2021. While the rest of the time, synchrony was not observed. According to the calculated data, it is expected that the biomass values may coincide for the first time in 2022.Practical significance: the results obtained provide additional grounds for refining the volume of TAC.