Allozyme variation in Mykiss Parasalmo (O.) mykiss from the Kol River

Abstract

The river system of the Kol River is a specially pro� tected natural area and part of the Kol River regional State Experimental Biological (Salmon) Preserve. Salmon that dwell there and are the object of protec� tion have retained their initial intraspecific structure and are a unique model for the study of the laws of for� mation of biodiversity, its preservation, and sustain� able nature management [1]. The genetic specific fea� tures of most species of salmonids dwelling there, including the mykiss, have remained poorly studied up to the present time. In the course of previous studies [1–3], isolated spawning griunds in three tributaries (the Nilkinka, Krasnaya, and Skvichek) were found in the Kol River basin. Joint spawning of anadromous and resident forms of the species was first observed in this river [3]. However, the reproductive relationships of schools at different spawning grounds remained unclear. The basic task of this investigation was to study the genetic variation and subdivision of mykiss from the Kol River. The study was based on samples of juvenile mykiss aged 1+, 2+ collected in the vicinity of spawning grounds.