University of Cologne, Cologne Biocenter, Institute of Zoology, General Ecology, Zuelpicher Str. 47b, D-50674 Cologne, Germany.
University of Cologne, Cologne Biocenter, Institute of Zoology, General Ecology, Zuelpicher Str. 47b, D-50674 Cologne, Germany.
Eur J Protistol. 2020 Apr;73:125687. doi: 10.1016/j.ejop.2020.125687. Epub 2020 Feb 17.
Paramonosiga coloniensis sp. nov., Salpingoeca amphoriscia sp. nov., S. fluviatilis sp. nov. and S. loutrophoria sp. nov. are frequently found craspedid species in the River Rhine which have not yet been described, despite their high abundance. All new species are characterized based on a distinct morphology which is different from all up to now described species and on a molecular level based on transcriptome data. In addition, we give extended redescriptions of S. amphoridium and S. angulosa, based on SSU and LSU rDNA data and morphology. The six-gene phylogenetic analyses place all species into freshwater clades of the craspedids. The separation of the freshwater and marine clades of this group is becoming more distinct with every craspedid sequence added. The River Rhine is one of the largest rivers in Europe but its protist biodiversity is fairly undescribed, especially regarding choanoflagellates. We conclude that the biodiversity of craspedid choanoflagellates is broadly underestimated.
Paramonosiga coloniensis sp. nov.、Salpingoeca amphoriscia sp. nov.、S. fluviatilis sp. nov. 和 S. loutrophoria sp. nov. 是莱茵河中尚未被描述的常见 craspedid 物种，尽管它们数量丰富。所有新物种都是基于独特的形态学特征，与迄今为止描述的所有物种不同，并基于转录组数据在分子水平上进行鉴定。此外，我们根据 SSU 和 LSU rDNA 数据和形态学对 S. amphoridium 和 S. angulosa 进行了扩展重新描述。六基因系统发育分析将所有物种置于 craspedids 的淡水类群中。随着每一个 craspedid 序列的添加，该组的淡水和海洋类群的分离变得更加明显。莱茵河是欧洲最大的河流之一，但它的原生生物多样性相当未被描述，特别是关于领鞭毛生物。我们得出结论， craspedid 领鞭毛生物的生物多样性被广泛低估。
