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Título: | What Can Environmental Sequences Tell Us About the Distribution of Low‐Rank Taxa? The Case of Euplotes (Ciliophora, Spirotrichea), Including a Description of Euplotes enigma sp. nov. |
Autor: | Boscaro, Vittorio; Syberg-Olsen, Mitchell J.; Irwin, Nicholas A.T.; Campo, Javier del CSIC ORCID; Keeling, Patrick J. | Palabras clave: | Ciliates Anoxic environments 18S phylogeny High-throughputsequencing Macronuclear shape Morphological characterization Protistbiogeography Genus-level analysis SSU rRNA. |
Fecha de publicación: | mar-2019 | Editor: | John Wiley & Sons | Citación: | Journal of Eukaryotic Microbiology 66(2): 281-293 (2019) | Resumen: | Environmental sequences have become a major source of information. High‐throughput sequencing (HTS) surveys have been used to infer biogeographic patterns and distribution of broad taxa of protists. This approach is, however, more questionable for addressing low‐rank (less inclusive) taxa such as species and genera, because of the increased chance of errors in identification due to blurry taxonomic boundaries, low sequence divergence, or sequencing errors. The specious ciliate genus Euplotes partially escapes these limitations. It is a ubiquitous, monophyletic taxon, clearly differentiated from related genera, and with a relatively well‐developed internal systematics. It has also been the focus of several ecological studies. We present an update on Euplotes biogeography, taking into consideration for the first time environmental sequences, both traditional (Sanger) and HTS. We inferred a comprehensive small subunit rRNA gene phylogeny of the genus including a newly described marine species, Euplotes enigma, characterized by a unique question mark‐shaped macronucleus. We then added available environmental sequences to the tree, mapping associated metadata. The resulting scenario conflicts on many accounts with previously held views, suggesting, for example, that a large diversity of anaerobic Euplotes species exist, and that marine representatives of mainly freshwater lineages (and vice‐versa) might be more common than previously thought | Descripción: | 13 pages, 3 figures, 2 tables | Versión del editor: | https://doi.org/10.1111/jeu.12669 | URI: | http://hdl.handle.net/10261/181783 | DOI: | 10.1111/jeu.12669 | Identificadores: | doi: 10.1111/jeu.12669 issn: 1066-5234 e-issn: 1550-7408 |
Aparece en las colecciones: | (ICM) Artículos |
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