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Stock assessment and prospects of baikal omul fishery

https://doi.org/10.36038/0234-2774-2025-26-4-7-26

EDN: YDLBUB

Abstract

   In most of the areas surveyed in 2025, an increase in the number and biomass of omul was noted compared to the previous year. According to the results of the sonar survey, the total number of omul in the Baikal water area was 51,5 million, and the biomass was 11,1 thousand tons, which is 39 % and 29 % higher than in 2024, respectively. The research results indicate a positive trend of stock recovery. According to results of calculations based on the TISVPA model, the fishable stock biomass of Baikal omul in 2025 is reached 10,6 thousand tons, an increase of 32,5 % compared to the previous year. The high convergence of the results obtained using different methods indicates their reliability. The natural reproduction of pelagic omul in 2025 was, as in 2024, at a low level due to the entry into the spawning stock of weak generations born in 2016–2018. Extremely low numbers of hatching larvae in the Bolshaya Rechka and Selenga rivers will negatively affect the stock level starting in 2028. In the surveyed areas of Lake Baikal (Barguzinsky, Severobaikalsky, and Selenginsky), catches were significantly dominated by individuals of the coastal morphological and ecological group. In 2024 and 2025, the high abundance generation year of birth in 2020 dominated in the control catches. If the number of recruitment aged 2 years is at the level of 2021–2024 and the catch is no more than 300 tons, the projected fishable stock biomass in 2026–2027 will increase to 12,6 and 14,5 thousand tons, and spawning stock biomass – up to 2,6 and 3,9 thousand tons, respectively.

About the Authors

O. A. Bulatov
State Scientific Center of the «VNIRO»
Russian Federation

105187; Moscow



S. M. Goncharov
State Scientific Center of the «VNIRO»
Russian Federation

105187; Moscow



S. B. Popov
State Scientific Center of the «VNIRO»
Russian Federation

105187; Moscow



Yu. N. Kravchenko
State Scientific Center of the «VNIRO»
Russian Federation

105187; Moscow



N. G. Klyuchareva
State Scientific Center of the «VNIRO»
Russian Federation

105187; Moscow



D. A. Vasiliev
State Scientific Center of the «VNIRO»
Russian Federation

105187; Moscow



V. A. Peterfeld
Tyumen branch State Scientific Center of the «VNIRO»
Russian Federation

625023; Tyumen



S. V. Kushnarev
Baikal branch State Scientific Center of the «VNIRO»
Russian Federation

670034; Ulan-Ude



A. V. Bazov
Baikal branch State Scientific Center of the «VNIRO»
Russian Federation

670034; Ulan-Ude



A. I. Bobkov
Baikal branch State Scientific Center of the «VNIRO»
Russian Federation

670034; Ulan-Ude



V. V. Konovalova
Baikal branch State Scientific Center of the «VNIRO»
Russian Federation

670034; Ulan-Ude



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Review

For citations:


Bulatov O.A., Goncharov S.M., Popov S.B., Kravchenko Yu.N., Klyuchareva N.G., Vasiliev D.A., Peterfeld V.A., Kushnarev S.V., Bazov A.V., Bobkov A.I., Konovalova V.V. Stock assessment and prospects of baikal omul fishery. Problems of Fisheries. 2025;26(4):7-26. (In Russ.) https://doi.org/10.36038/0234-2774-2025-26-4-7-26. EDN: YDLBUB



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ISSN 0234-2774 (Print)

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