Abstract

The biology, structure of populations, and morphology of diadromous East Siberian char Salvelinus leucomaenis from two rivers of the Kuril Islands—the Kunashir and the Iturup—are studied and the resident lacustrine form from Lake Peschanoe is described for the first time. It is shown that the specific features of the anadromous migration of diadromous individuals, the relative numbers of juveniles of the trout Salvelinus leucomaenis, and the rate of their growth are determined by the temperature dynamics and the sizes of the freshwater water bodies used for spawning.

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