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Abstract <p>This work is a continuation of research in the field of Baikal omul stock assessment. The lack of fishery information due to the introduction of a moratorium on fishery makes it hard to assess the stock state using mathematical modeling. Quantitative characteristics of the stock status from 1995 to 2024 have been estimated using a cohort analysis. Based on these characteristics, a stock–recruitment relationship has been determined for the fishery period and biological reference points for the omul biomass (target and limit) have been calculated. The study results indicate a gradual recovery of the stock. The estimated total biomass for 2024 was 8000 t, with spawning biomass of 3500 t. However, the forecast showed that spawning biomass will not reach the target value in the coming years.</p>

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Dynamics of Baikal Omul Coregonus migratorius (Coregonidae) Stock during Periods of Fishery and Fishery Banning

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月1日

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  • N. G. Zapadaeva,
  • A. E. Bobyrev,
  • V. A. Peterfeld,
  • A. V. Bazov

摘要

Abstract

This work is a continuation of research in the field of Baikal omul stock assessment. The lack of fishery information due to the introduction of a moratorium on fishery makes it hard to assess the stock state using mathematical modeling. Quantitative characteristics of the stock status from 1995 to 2024 have been estimated using a cohort analysis. Based on these characteristics, a stock–recruitment relationship has been determined for the fishery period and biological reference points for the omul biomass (target and limit) have been calculated. The study results indicate a gradual recovery of the stock. The estimated total biomass for 2024 was 8000 t, with spawning biomass of 3500 t. However, the forecast showed that spawning biomass will not reach the target value in the coming years.