[Seasonal dynamics of the development and reproduction of parthenogenetic generations of Xiphidiocercaria sp. VII Odening 1962 (Trematoda: Plagiorchiidae) in the mollusk, Coretus corneus].

Intensity of reproduction of parthenogenetic generations of Xiphidiocercaria sp. VII Odening 1962 was shown to exhibit a seasonal dependence. Comparative studies of generative and somatic cell nuclei size, amount of divisional cells, quantity of cercariae and embryos were conducted in summer and winter.