Scientific publications

In this work the results of the comparative analysis of whitefishes from 5 populations on the basic biological parameters are given. The samples of passing whitefish from coastal sites of Keret Gulf of the White Sea and lakes Louhskoe, Keret, and Verhnee Pulongskoe are compared. There are two forms of whitefish that exist in Louhskoe lake: low-density-rakered (18-31 gillrakers), and high-density-rakered (38-42 gillrakers). Other populations in the rest of lakes are presented only in low-density-rakered forms with benthic feeding (20-31 gillrakers). High-densityrakered whitefish is characterized by large size and plankton feeding. Low-density-rakered whitefish usually has smaller average size for each age. Among the low-density-rakered forms, whitefish of the White Sea is largest, so as the sea fodder resources promote good growth. The maturing of whitefish lasts for 4-6 years, but they become matured at certain size of the body for each population.