I. I. Schmalhausen Institute of Zoology NAS of Ukraine, 15, Bogdan Khmelnytskyi Street, Kyiv, 01030, Ukraine.
African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa.
Parasitol Res. 2023 Mar;122(3):853-865. doi: 10.1007/s00436-023-07785-8. Epub 2023 Feb 4.
Patterns of the rockcod Notothenia coriiceps infection with helminths were analysed to understand the dynamics of parasite communities in this Antarctic fish and to test their stability over time. The study was performed using helminth samples collected from 183 N. coriiceps in 2014-2015 and 2020-2021 in the vicinity of the Ukrainian Antarctic station (UAS) "Akademik Vernadsky", Galindez Island, Argentine Islands, West Antarctica. Overall, 25 helminth taxonomical categories (nine trematodes, four cestodes, five nematodes, and seven acanthocephalans) were subjected to analysis. A direct comparison of the helminth population characteristics showed that nine species significantly changed their infection parameters during the 6 years between the samples. Seven of them (Pseudoterranova sp., Contracaecum sp., Ascarophis nototheniae, monolocular metacestodes, bilocular metacestodes, Metacanthocephalus rennicki, and Diphyllobothrium sp.) were found to have a significant impact on the differences between helminth infracommunities in 2014-2015 and 2020-2021. Most studied patterns of helminth component community appeared to show a stable tendency, and observed fluctuations were close to the steady trend. Slight but significant changes in the infection patterns observed in this study might have been caused by changes in the populations of intermediate, paratenic, and definitive hosts of helminths (marine invertebrates, mammals, and birds), which participate in helminth transmission in Antarctic ecosystems.
分析了南极鳕鱼 Notothenia coriiceps 感染寄生虫的模式，以了解这种南极鱼类寄生虫群落的动态，并检验其随时间的稳定性。本研究使用了 2014-2015 年和 2020-2021 年在乌克兰南极站（UAS）“Akademik Vernadsky”、阿根廷群岛 Galindez 岛、南极洲西部附近采集的南极鳕鱼寄生虫样本进行分析。总共对 25 种寄生虫分类群（9 种吸虫、4 种绦虫、5 种线虫和 7 种棘头虫）进行了分析。寄生虫种群特征的直接比较表明，在两个样本之间的 6 年时间里，有 9 种寄生虫的感染参数发生了显著变化。其中 7 种（Pseudoterranova sp.、Contracaecum sp.、Ascarophis nototheniae、单房性囊尾蚴、双房性囊尾蚴、Metacanthocephalus rennicki 和 Diphyllobothrium sp.）被发现对 2014-2015 年和 2020-2021 年寄生虫亚群落之间的差异有显著影响。研究中观察到的大多数寄生虫成分群落模式似乎表现出稳定的趋势，观察到的波动接近稳定趋势。本研究中观察到的感染模式的轻微但显著变化可能是由寄生虫中间宿主、副宿主和终末宿主（海洋无脊椎动物、哺乳动物和鸟类）的种群变化引起的，这些宿主参与了南极生态系统中的寄生虫传播。
