Abstract
Population dynamics of Atlantic chub mackerel Scomber colias in the central-eastern Atlantic Ocean is described by the Schaefer production model using the fish abundance index as input. Developing of the representative species abundance index is considered as an example for a multispecies fishery prevailing in the area. A procedure for processing the daily fishing reports database is proposed, which includes an algorithm for forming a representative sample, testing the hypothesis of statistical homogeneity of observations, and standardizing the population index by the method of generalized linear models (GLM). The fishery of pelagic fish in the central-eastern Atlantic Ocean is not selective, and the seasonal spatial distribution of the species and the capacity of fishing vessels are the most significant factors of productivity. The recent catch (420 thousand tons in 2018) is a historical maximum; according to the productivity model, it approaches the estimate of the upper limit of the sustainable catch (499 thousand tons). Exceeding this target of fishing impact will inevitably lead to the overfishing and sharp reduction of the Atlantic chub mackerel population.
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ACKNOWLEDGMENTS
The authors express their sincere gratitude to dearly departed V.K. Babayan (VNIRO) for valuable discussions during the work on the article, as well as to V.R. Sokolovsky (VNIRO) for a number of useful comments.
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Artemenkov, D.V., Mikhailov, A.I., Nikitenko, A.I. et al. Population Dynamics of Atlantic Chub Mackerel Scomber colias at the Multispecies Fishery. J. Ichthyol. 61, 900–911 (2021). https://doi.org/10.1134/S0032945221060011
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DOI: https://doi.org/10.1134/S0032945221060011