Diversity of helminthofauna of zoo mammals


Keywords: helminths, nematodes, spreading, diagnosis, extensiveness and intensity of infestation, morphometry

Abstract

Study of the fauna of parasites and their circulation in conditions of biocoenosis is important for the systematic forecasting epizootic situation of invasive diseases in certain natural and geographical areas. Investigating the diversity of helminths of exotic zoo mammals can prevent the transmission of pathogens to domestic animals and prevent the development of zoonotic diseases. The aim of the research was to determine the composition of the helminthofauna and the level of invasiveness of zoo mammals of different species in the conditions of Dnipropetrovs’k and Zaporizhia regions. The research was conducted in the period from 2015 to 2017, 70 animals of the order Carnivora, order Primates and the clade Ungulata were examined. The diagnosis of helminthiasis was carried out coproscopy using the McMaster method and quantitative calculation of eggs in 1 g of faeces (EPG). Noted predominant nematode parasites of the gastrointestinal tract: in the carnivorous animals of the suborder Ascaridata, in primates – Trichurata and Rhabditata, in the ungulates – Strongylata and Trichurata. The average extensiveness of helminth infestation was 82.86%, including in a number of carnivorous animals EI – 88.24%, in primates – 100%, in ungulates – 79.59%. Fluctuations of the intensity of infestation in carnivores group ranged from 81.25±6.29 to 175±8.41 EPG, in primates – 62.5 ± 5.59 – 125 ± 11.18 EPG, in ungulates – 37.5 ± 5.59 – 316.67 ± 58.27 EPG. Most of the identified representatives are geohelminths, just two species of biohelminths – Dirofilaria immitis and Dicrocoelium lanceatum was detected. The most common mono invasions are 58.62 %, and the finding of helminths in the form of two- (29.31%), three- (8.62%) and four-component (3.45%) mix invasions are found more rarely. The metric parameters of eggs of Baylisascaris sp., Toxocara sp., Toxascaris leoninа, Trichuris trichiura, Trichuris sp., Capillaria sp., Ancylostoma sp., Nematodirus sp., obtained from exotic species of animals, were determined. For the first time, data were obtained on the invasiveness of animals and the diversity of helminthofauna of zoo mammals in the Dnipropetrovs’k and Zaporizhia regions. The research results are the basis for treatment and prevention measures for invasive disease.

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Published
2018-03-02
How to Cite
Gugosyan, Y., Shendryk, C., & Rymskii, V. (2018). Diversity of helminthofauna of zoo mammals. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 20(83), 130-135. https://doi.org/10.15421/nvlvet8325