Specific features of the numbers and structure of the population of Proteocephalus longicollis (Zeder 1800) (Cestoda: Proteocephalidea)—A mass parasite of whitefish Coregonus lavaretus L. under conditions of technogenic pollution of the water body

Abstract

The numbers, age structure, and morphological variation of the cestode Proteocephalus longicollis from whitefish of a natural water body (Kamennoe Lake) and those of Kostomuksha Lake polluted with wastes of the mining industry (northern Karelia) have been studied. In the polluted water body, a high infes tation of whitefish and domination of larval stages in the structure of the parasite population have been estab lished. It is shown that under conditions of pollution, only one of the variations of scolex signs dominates in the structure of phenotypic diversity. The size indices of cestodes are reliably smaller as compared with ces todes from the natural water body. The data obtained indicate that technogenic pollution determines a decrease in the intrapopulation diversity of P. longiocollis, and a decrease in the values of morphometric char acters indicates inhibition of the morphophysiological state of individuals.

Science school in ecological parasitology in Karelia

“…Eimeriidae в онтогенезе разводимых в неволе животных [Аникиева и др., 1984, 1988, 1990; Аниканова, 1994] тов, ее статика и динамика под воздействием комплекса биотических и абиотических факторов среды. Разработана методология популяционной морфологии паразитов рыб и дана оценка основных закономерностей формирования морфологической изменчивости паразитов рыб [Аникиева, 2000, 2004, 2008, 2010Аникиева и др., 2004, 2007Аникиева, Иешко, 2007, 2010Аникиева, Доровских, 2009;Anikieva et al, 2017].…”