Biodiversity of oligotrich ciliates in the South China Sea: description of three new<i>Strombidium</i>species (Protozoa, Ciliophora, Oligotrichia) with phylogenetic analyses

Song, Wen; Zhao, Xiaolu; Liu, Weiwei; Hu, Xiaozhong; Al‐Farraj, Saleh A.; Al‐Rasheid, Khaled A. S.; Song, Weibo; Warren, Alan

doi:10.1080/14772000.2015.1081992

Cited by 21 publications

(17 citation statements)

References 43 publications

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“…The family Strombidiidae is not monophyletic in any of our trees, which is consistent with previous investigations Song et al, 2015). These findings partly support Agatha's classification based on morphological characters, i.e., that the families Tontoniidae, Pelagostrombidiidae, and Cyrtostrombidiidae should be split from the family Strombidiidae (Agatha, 2004b).…”

Section: Classification Of Families In the Subclass Oligotrichiasupporting

confidence: 82%

“…Of these species, only S. purpureum lacks detailed in vivo information, while the rest are all known to possess an eyespot (Liu, 2011;Song et al, 2009;Song et al, 2015). Moreover, the eyespot is the only unique morphological character shared among all members of this clade, which can also explain why Williophrya clustered within it.…”

Section: Parastylifer S Guangdongensei S Oculatum S Purpureum Amentioning

confidence: 88%

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Multi-gene-based phylogenetic analysis of oligotrich ciliates with emphasis on two dominant groups: Cyrtostrombidiids and strombidiids (Protozoa, Ciliophora)

Gao

Song

et al. 2016

Molecular Phylogenetics and Evolution

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-based phylogenetic analysis of oligotrich ciliates with emphasis on two dominant groups: cyrtostrombidiids and strombidiids (Protozoa, Ciliophora), Molecular Phylogenetics and Evolution (2016), doi: http://dx.doi.org/10. 1016/j.ympev.2016.08.019 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ABSTRACTPhylogenetic analyses of ciliated protists are frequently based on single molecular markers, usually the small subunit ribosomal RNA gene (SSU rDNA), despite the well-known limitations of this approach.Here, 78 new sequences of three linked genes (SSU rDNA, ITS1-5.8S rDNA-ITS2, LSU rDNA) were characterized and applied to phylogenetic analyses of oligotrichs (s. str.). It was found that: (1) and Apostrombidium is confirmed, which updates the evolutionary hypothesis for oligotrichs based on ciliary patterns; and (5) two relatively stable clades were found in the family Strombidiidae.

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Section: Classification Of Families In the Subclass Oligotrichiasupporting

confidence: 82%

Section: Parastylifer S Guangdongensei S Oculatum S Purpureum Amentioning

confidence: 88%

Multi-gene-based phylogenetic analysis of oligotrich ciliates with emphasis on two dominant groups: Cyrtostrombidiids and strombidiids (Protozoa, Ciliophora)

Gao

Song

et al. 2016

Molecular Phylogenetics and Evolution

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“…and Strombidiidae K X sp. are unidentified environmental sequences, but are related with sequences of two species sampled from Chinese coastal waters and deposited as Strombidium triquetrum (KJ609052; Gao et al, 2016) and Strombidium capitatum (KP260510; Song et al, 2015) in GenBank. The sequences of the four "taxa" are aggregated into the "Strombidiidae K cluster" in the PR 2 database.…”

Section: Phylogenetic Trees and Second-level Clusteringmentioning

confidence: 93%

“…data). The GenBank sequence KP260510 was linked to a specimen identified as Strombidium capitatum sampled from Chinese coastal waters (Song et al, 2015). The gene sequence is accompanied by a short description, line drawings, and micrographs.…”

Section: Geographic Patterns and Diversity At Swarm Otu Levelmentioning

confidence: 99%

“…The line drawings and one micrograph come from a previous study on S. capitatum; the remaining micrographs do not provide many details and primarily depict a conspicuous apical protrusion. Conspecificity of the sequenced specimens with S. capitatum is questioned by a much larger cell size (90-135 µm × 70-100 µm vs. 45-70 µm × 40-60 µm) and much longer extrusomes (22-24 µm vs. about 15 µm; Song et al, 2015). Hence, a cryptic species different from S. capitatum might have been sequenced.…”

Section: Geographic Patterns and Diversity At Swarm Otu Levelmentioning

confidence: 99%

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Genetic Diversity in Marine Planktonic Ciliates (Alveolata, Ciliophora) Suggests Distinct Geographical Patterns – Data From Chinese and European Coastal Waters

et al. 2021

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Unraveling geographic distribution patterns of planktonic protists is a central goal in marine microbial ecology. Using a novel combination of recently developed phylogenetic and network analyses on a V4 18S rDNA metabarcoding dataset, we here analyzed the genetic diversity of marine planktonic ciliate communities in Chinese and European coastal waters. Thereby, our approach provided an unprecedented perspective on geographic patterns inferred from ciliate genetic diversity and accomplished a very fine resolution down to single nucleotides within operational taxonomic units (OTUs). While most OTUs (87%) exclusively contained sequences of either Chinese or European origin, those OTUs detected in both regions comprised the vast majority of reads (84%). Phylogenetic analyses of OTUs belonging to the same taxon revealed genetically distinct clades that were geographically restricted to either Chinese or European coastal waters. The detection of signature nucleotides emphasized this genetic distinction of Chinese and European clades. Second-level clustering of OTUs and reference sequences in two selected taxa (the oligotrichid Spirotontonia and the tintinnid Tintinnidium) revealed the presence of several potentially new species or ones lacking genetic reference data. Geographic patterns were also discovered by network analyses within 700 widespread and abundant OTUs; in 77 of these OTUs, European and Chinese sequences formed significantly assortative groups. These assortative groupings indicated a higher genetic similarity among sequences from the same region than between sequences from different regions. Our results demonstrate that detailed analyses of metabarcoding data down to single nucleotide differences expand our perception of geographical distribution patterns and provide insights into historic and ongoing effective dispersal in protists. The congruent discovery of geographic patterns at different levels of resolution (between and within OTUs) suggests that cosmopolitan distribution in marine planktonic ciliates is less common than previously postulated.

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Diversity of oligotrich ciliates (Ciliophora, Spirotrichea) in the northern coast of South China Sea as revealed in LSU rDNA sequences

Liu

Warren

et al. 2019

J. Ocean. Limnol.

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Biodiversity of oligotrich ciliates in the South China Sea: description of three newStrombidiumspecies (Protozoa, Ciliophora, Oligotrichia) with phylogenetic analyses

Cited by 21 publications

References 43 publications

Multi-gene-based phylogenetic analysis of oligotrich ciliates with emphasis on two dominant groups: Cyrtostrombidiids and strombidiids (Protozoa, Ciliophora)

Multi-gene-based phylogenetic analysis of oligotrich ciliates with emphasis on two dominant groups: Cyrtostrombidiids and strombidiids (Protozoa, Ciliophora)

Genetic Diversity in Marine Planktonic Ciliates (Alveolata, Ciliophora) Suggests Distinct Geographical Patterns – Data From Chinese and European Coastal Waters

Diversity of oligotrich ciliates (Ciliophora, Spirotrichea) in the northern coast of South China Sea as revealed in LSU rDNA sequences

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