Peculiarities of biology and fishing of vendace (Coregonus albula L.) in some lakes of Republic Karelia

Based on the results of the calculations, the allowable catch of the vendace can be recommended. The results of studies conducted within the framework of forecasting subjects (SevNIORH, Northern Fisheries Research Institute), on the long-term catch of the vendace and its distribution in the main commercial reservoirs of Karelia (Lake Ladoga, Onega Lake, Syamozero, Topo-Piaozero and Vodlozero reservoirs). The main structural and population indices were studied: size-weight, age composition and age of puberty. The calculations of its abundance and biomass at the present stage, the level of commercial use necessary for an objective solution of fishery regulation and forecasting of catches are carried out. Proceeding from stable reproduction conditions on the water bodies and constant replenishment based on the results of calculations, the average annual allowable catch of the vendace can be recommended in the amount of: Ladoga Lake (northern part) 150-190 tons, Onega Lake 600-800 tons, Topo-Piaozersky Reservoir 25-30 tons, Vodlozerskoe reservoirs 5-10 tons and Syamozero -5 tons.