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The Helminthfauna of allogen fishes in the conditions of the Republic of Moldova


Author: Gologan Ion
Degree:doctor of biology
Speciality: 03.00.19 - Parasitology, helminthology
Year:2022
Scientific advisers: Ştefan Rusu
doctor, professor
Dumitru Bulat
doctor, associate professor (docent)
Institution: Moldova State University

Status

The thesis was presented on the 23 December, 2022 at the meeting of the Scientific Council and now it is under consideration of the National Council.

Abstract

Adobe PDF document – 0.71 Mb / in romanian
Adobe PDF document – 0.64 Mb / in english

Thesis

CZU 597.2/5:576.895(478)(043.3)

Adobe PDF document 7.64 Mb / in romanian
163 pages

Keywords

helminth fauna, alien species, parasitic impact, aquatic ecosystems, productive indices, innovative procedures, prophylaxis, control

Summary

Thesis structure: introduction, five chapters, general conclusions and recommendations, bibliography of 198 titles, 19 annexes, 119 basic pages, 42 figures, 19 tables. The obtained results are published in 10 scientific papers on the thesis.

Keywords: helminth fauna, alien species, parasitic impact, aquatic ecosystems, productive indices, innovative procedures, prophylaxis, control. Purpose. To establish the helminth fauna and the particularities of its impact on the host organism, in order to develop innovative procedures for prophylaxis and control of helminthiasis in some Asian carp species. Objectives. Establishing the biodiversity of the helminthfauna of alien fishes from various aquatic ecosystems of the Republic of Moldova; evaluation of the impact of mono- and poliinvasions on some indices of the morpho-functional and biochemical status in some Asian carp species; highlighting the impact of mono- and poliinvasions on productive indices in some Asian carp species; elaboration of innovative procedures for prophylaxis and control of helminths in some Asian carp species. Scientific novelty and originality. For the first time in the Republic of Moldova, a complex scientific-practical study was conducted consisting in: determining the helminth fauna in alien and native fish species from various natural and anthropogenic aquatic ecosystems with the establishment of specific and common helminths for various species of birds and mammals, as well as for humans; evaluation of the impact of mono- and poliinvasions on morpho-functional, biochemical, productive indices of the host organism in some Asian carp species, finalized with the development, patenting and implementation of innovative procedures, prophylaxis and control of parasites. Main results. The role of alien fishes from various aquatic ecosystems of the Republic of Moldova was established in the formation, maintenance and circulation of outbreaks of common parasitic agents for various species of birds and mammals, as well as for humans. For the first time, the changes in the morphofunctional indices for mono- and poliparasitic infestation were elucidated and new procedures for complex antiparasitic treatment were developed depending on the specificity of the infestation in some Asian carp species. Theoretical significance. For the first time a major problem in the field of fish farming in the Republic of Moldova was addressed and solved, which allowed to highlight the results of the action on the host organism of mono-, poliinvasions, determine their impact on product quality and development procedures for prophylaxis and control of parasitosis in some Asian carp species. Applicative value. Based on the obtained results, a Methodological Guide was developed, innovative measures for prophylaxis and control of parasitosis in some Asian carp species were implemented and patented, innovative procedures to reduce and recover economic damage in the fisheries and livestock sector were developed, essential both for the reproduction, growth and development of productive fishes in a healthy aquatic ecosystem, and for the interruption of the epizootic chain of outbreak transport of common parasitic agents, both for various species of birds and mammals, and for humans. Implementation of scientific results. The results of the study were implemented in fishing practice and used in the training of students, residents and masters in various educational institutions.