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To investigate the species composition, abundance, and productivity of zooplankton affecting food availability for larval omul in Lake Baikal.

July 20, 2026Open Access

Composition and productivity of zooplankton as basis of forage base for larvae Baikal omul (Coregonus migratorius) in Posolsky sor (Lake Baikal) in 2024

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To investigate the species composition, abundance, and productivity of zooplankton affecting food availability for larval omul in Lake Baikal.
Sampling conducted from May to October 2024
Assessment of zooplankton species composition and biomass
Analysis of gut content of larval omul for dietary components
Maximum zooplankton density recorded at 708 thousand individuals/m3 in July
Biomass peaked at 2000 cal/m3 during the same period
Gut content reveals dominant presence of all developmental stages of Cyclops kolensis in larval omul.

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Randomized trial evaluates zooplankton productivity as forage for omul larvae, suggesting aquatic ecosystem balance.

Sheveleva et al. (2026) studied this question.

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