[RESULTS OF THE STUDY OF GEOGRAPHICAL VARIABILITY OF THE PARASITE FAUNA AND OF THE STRUCTURE OF COMPONENT COMMUNITIES...

The material was collected according to commonly accepted methods in 1992—2013 from the following sites: the Lake Krivoye (Kolguev Island); Volonga, Schapkina, Kolva, More-Yu, Vorkuta, Kara, and Khalmer-Yu Rivers; Lakes Nikaramata (the Kara River basin) and Mercempertato (Yamal Peninsula). A total of 436 of the minnow Phoxinus phoxinus with age 1+—3+ were examined. In the examined water bodies, excluding the Kolva River, the parasite fauna of the minnow is impoverished, and, to a greater extent, possesses an occasional character. In rivers Kolpina and Shapkina Rivers, component communities of minnow parasites are mature (balanced, according to Pugachev, 1999). These minnow parasite communities consist of three groups of species separated according to the ratio of their biomasses. In More-Yu, Vorkuta, Kara, and Khalmer-Yu Rivers, and in Lakes Nikaramata, and probably, Mercempertato, parasite communities are immature (unbalanced). These minnow parasite communities consist of 1—3 groups of species separated according the ratio of their biomass. Characteristics of communities from the Volonga River need clarification. Associations between the state of the described minnow parasite communities and their geological age (Quaternary history) are traced. 324