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Information × Registration Number 0223U005298, 0123U103707 , R & D reports Title Monitoring studies of changes in the endoparasite communities of teleost fishes in the Argentine Islands region, West Antarctica popup.stage_title Head Kuzmina Tetiana A., Кандидат біологічних наук Registration Date 19-12-2023 Organization Schmalhausen Institute of Zoology of National Academy of Sciences of Ukraine popup.description2  Twenty-eight species of helminths, including one species of monogeneans, 7 trematodes, 4 cestodes, 5 nematodes, and 11 species of acanthocephalans, were found in the Antarctic rockcod Notothenia coriiceps from the water area of the Akademik Vernadskyi UAS in 2021–2023. The prevalence (P) of fish infection by helminths was 100%. AccordiPEI=>50–100%), background (P=>10–50%) and rare species (P<10%). According to the monitoring studies of N. coriiceps infection by larval stages of anisakid nematodes and diphyllobothriid cestodes, the fluctuations in P and an increase in the intensity of fish infection were observed in 2014–2022; probably it is related to the increase in the population of seals, the final hosts of these helminths. Fluctuations in the values of P and intensity in 2014–2022 were recorded for trematodes, with a gradual decrease in the values of both parameters. The study of N. coriiceps infection of with acanthocephalans revealed a gradual increase in the level of fish infection with these helminths, especially in the period of 2019–2023. The rarefaction curve analysis indicated the sufficiency of the sample of 108 specimens of bony fishes for examination of their helminth communities the UAS aquatoria. The application of a regression model to estimate the variations in N. coriiceps infection with helminths over 20 years indicated that the fishes were less infected with helminths lower in 2014 and higher in 2021 compared to 2002. The species richness of the endohelminth communities in 2014–2021 were statistically significantly higher compared to 2002. Product Description popup.authors Yuriy I. Kuzmin Lisitsyna Olga I. Syrota Yaroslav Yu. popup.nrat_date 2023-12-19 Close