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Information × Registration Number 0201U004310, 0196U008119 , R & D reports Title Systematics, life cycles and parasite system of helminths in aquatic and terrestrial ecosystems of Ukraine popup.stage_title Head Sharpylo Viktor Petrovych, Registration Date 19-03-2001 Organization Schmalhausen Institute of Zoology NAS of Ukraine popup.description2 Parasitic organisms, mainly helminths, and parasite systems were investigated. Paratenic parasitism is first considered as ecological strategy aimed at the increasing of parasite system stability and possibilities of host radiation due to the creation of alternative sources of infection. Ten cyclophyllidean cestode species have been studied on the ultrastructural (subcellular) level. The original hypothesis of oncosphere cell oligomerization in the natural history of cestodes and juvenilization of higher cyclophyllideans was proposed. Twenty-two species of the family Rhabdiasidae (Nematoda) were found in Palearctic fauna. Life cycles of 11 species were investigated, 2 types of life cycles were determined. Results of faunistic studies on cestodes from fishes of Ukraine were summarized. Seventy-six cestode species from 8 orders and 20 families and 1 cestodarian species were registered in fresh waters, Black and Azov Seas. Larval stages of bird, mammal, and selachian cestodes were found to occur in fishes . Forty-five trematode species from the superfamily Brachylaimoidea and 26 species from the family Dicrocoeliidae were found on the territory of Ukraine. Six types of life cycles were described in trematodes studied 1 of them was first found. Product Description popup.authors popup.nrat_date 2020-04-02 Close