Protein degradation in the tissues and organs of the Kola Peninsula Pink salmon Oncorhynchus gorbuscha during the downstream and the spawning migration

In the work, it is assessed the intensity of protein degradation in tissues of the Kola Peninsula pink salmon during its downstream migration from the Indera River to the White Sea and in skeletal muscles of pink salmon spawners during its spawning migration from the White Sea to the Indera River. The authors have shown a relationship between the level of protein degradation and the life cycle stage of the pink salmon. They have established peculiarities in the physiological state of the Kola Peninsula spawning pink salmon, estimated by the level of intracellular protease activity and the content of carbonylated proteins, as compared to pink salmon species beyond migration.