Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Biologische Anstalt Helgoland, Helgoland, Schleswig-Holstein, Germany.
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Bremen, Germany.
PLoS One. 2021 Jan 7;16(1):e0244817. doi: 10.1371/journal.pone.0244817. eCollection 2021.
In this study, we created a dataset of a continuous three-year 18S metabarcoding survey to identify eukaryotic parasitoids, and potential connections to hosts at the Long-Term Ecological Research station Helgoland Roads. The importance of parasites and parasitoids for food web dynamics has previously been recognized mostly in terrestrial and freshwater systems, while marine planktonic parasitoids have been understudied in comparison to those. Therefore, the occurrence and role of parasites and parasitoids remains mostly unconsidered in the marine environment. We observed high abundances and diversity of parasitoid operational taxonomic units in our dataset all year round. While some parasitoid groups were present throughout the year and merely fluctuated in abundances, we also detected a succession of parasitoid groups with peaks of individual species only during certain seasons. Using co-occurrence and patterns of seasonal occurrence, we were able to identify known host-parasitoid dynamics, however identification of new potential host-parasitoid interactions was not possible due to their high dynamics and variability in the dataset.
在这项研究中，我们创建了一个连续三年的 18S 宏条形码调查数据集，以鉴定真核寄生生物，以及在长期生态研究站赫尔戈兰路（Helgoland Roads）与宿主之间的潜在联系。寄生虫和寄生生物对食物网动态的重要性以前主要在陆地和淡水系统中得到认可，而与陆地和淡水系统相比，海洋浮游寄生生物的研究则相对较少。因此，寄生虫和寄生生物在海洋环境中的发生和作用在很大程度上仍未被考虑。我们在整个数据集全年都观察到了大量的寄生生物操作分类单位和丰富的多样性。虽然一些寄生生物群体全年存在，只是丰度有所波动，但我们也检测到了寄生生物群体的连续出现，只有在某些季节才会出现个别物种的高峰。通过共现和季节性出现的模式，我们能够识别已知的宿主-寄生生物动态，但由于数据集的高动态性和可变性，无法识别新的潜在宿主-寄生生物相互作用。
