Morpho-physiological characteristics of Onego lake-feeding salmon (Salmo salar L.) obtained by use of statistical methods

Research results of the morpho-physiological characteristics of the lake-feeding salmon inhabiting Onego Lake (age, weight, length, height, fatness, gender, internal organ indexes) are presented in the article. The results were obtained with the use of the statistical analysis. Gender distinctions in salmon population were defined with the help of the stomach index. Distinctive differences in species coming from various habitats were determined by the use of the heart and stomach indexes. Consistent patterns of changes in the inner organs, independent upon gender and conditions of reproduction, were revealed.