[Natural foci of trichinelliasis in the Caspian Sea area].

The formation of natural foci of trichinelliasis was shown to depend on the established biocenotic relations between carnivorous animals. A highly intensive transmission of the invasion was recorded in continental areas where predators suffer from the lack of food in winter. Identification of the isolated Trichinella samples using single-pair cross hybridization and isoenzyme identification methods showed that the parasites of predators are T. spiralis nativa on the Northern Caspian coast and T. s. nelsoni on the Southern coast.