A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species
Three <i>Dysteria</i> species, <i>D. crassipes</i> Claparède & Lachmann, 1859; <i>D. brasiliensis</i> Faria et al., 1922; and <i>D. paracrassipes</i> n. sp., were collected from subtropical coastal waters of the East China Sea, near Ningbo, China....
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MDPI AG
2022-02-01
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| Series: | International Journal of Molecular Sciences |
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| author | Xuetong Zhao Hui Zhang Qianqian Zhang Zhishuai Qu Alan Warren Di Wu Xiangrui Chen |
| author_facet | Xuetong Zhao Hui Zhang Qianqian Zhang Zhishuai Qu Alan Warren Di Wu Xiangrui Chen |
| author_sort | Xuetong Zhao |
| collection | DOAJ |
| description | Three <i>Dysteria</i> species, <i>D. crassipes</i> Claparède & Lachmann, 1859; <i>D. brasiliensis</i> Faria et al., 1922; and <i>D. paracrassipes</i> n. sp., were collected from subtropical coastal waters of the East China Sea, near Ningbo, China. The three species were studied based on their living morphology, infraciliature, and molecular data. The new species <i>D. paracrassipes</i> n. sp. is very similar to <i>D. crassipes</i> in most morphological features except the preoral kinety, which is double-rowed in the new species (vs. single-rowed in <i>D. crassipes</i>). The difference in the small ribosomal subunit sequences (SSU rDNA) between these two species is 56 bases, supporting the establishment of the new species. The Ningbo population of <i>D. crassipes</i> is highly similar in morphology to other known populations. Nevertheless, the SSU rDNA sequences of these populations are very different, indicating high genetic diversity and potentially cryptic species. <i>Dysteria brasiliensis</i> is cosmopolitan with many described populations worldwide and four deposited SSU rDNA sequences. The present work supplies morphological and molecular information from five subtropical populations of <i>D. brasiliensis</i> that bear identical molecular sequences but show significant morphological differences. The findings of this study provide an opportunity to improve understanding of the morphological and genetic diversity of ciliates. |
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| last_indexed | 2024-03-09T23:44:47Z |
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| series | International Journal of Molecular Sciences |
| spelling | doaj.art-6a091c9b254f4b8aa3115b4d5b606bc42023-11-23T16:46:13ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-02-01233176410.3390/ijms23031764A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New SpeciesXuetong Zhao0Hui Zhang1Qianqian Zhang2Zhishuai Qu3Alan Warren4Di Wu5Xiangrui Chen6School of Marine Sciences, Ningbo University, Ningbo 315800, ChinaSchool of Marine Sciences, Ningbo University, Ningbo 315800, ChinaYantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaState Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen 361104, ChinaDepartment of Life Sciences, Natural History Museum, London SW7 5BD, UKSchool of Marine Sciences, Ningbo University, Ningbo 315800, ChinaSchool of Marine Sciences, Ningbo University, Ningbo 315800, ChinaThree <i>Dysteria</i> species, <i>D. crassipes</i> Claparède & Lachmann, 1859; <i>D. brasiliensis</i> Faria et al., 1922; and <i>D. paracrassipes</i> n. sp., were collected from subtropical coastal waters of the East China Sea, near Ningbo, China. The three species were studied based on their living morphology, infraciliature, and molecular data. The new species <i>D. paracrassipes</i> n. sp. is very similar to <i>D. crassipes</i> in most morphological features except the preoral kinety, which is double-rowed in the new species (vs. single-rowed in <i>D. crassipes</i>). The difference in the small ribosomal subunit sequences (SSU rDNA) between these two species is 56 bases, supporting the establishment of the new species. The Ningbo population of <i>D. crassipes</i> is highly similar in morphology to other known populations. Nevertheless, the SSU rDNA sequences of these populations are very different, indicating high genetic diversity and potentially cryptic species. <i>Dysteria brasiliensis</i> is cosmopolitan with many described populations worldwide and four deposited SSU rDNA sequences. The present work supplies morphological and molecular information from five subtropical populations of <i>D. brasiliensis</i> that bear identical molecular sequences but show significant morphological differences. The findings of this study provide an opportunity to improve understanding of the morphological and genetic diversity of ciliates.https://www.mdpi.com/1422-0067/23/3/1764ciliaturemolecular phylogenymorphological diversitynew speciesSSU rDNA sequence |
| spellingShingle | Xuetong Zhao Hui Zhang Qianqian Zhang Zhishuai Qu Alan Warren Di Wu Xiangrui Chen A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species International Journal of Molecular Sciences ciliature molecular phylogeny morphological diversity new species SSU rDNA sequence |
| title | A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species |
| title_full | A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species |
| title_fullStr | A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species |
| title_full_unstemmed | A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species |
| title_short | A Case Study of the Morphological and Molecular Variation within a Ciliate Genus: Taxonomic Descriptions of Three <i>Dysteria</i> Species (Ciliophora, Cyrtophoria), with the Establishment of a New Species |
| title_sort | case study of the morphological and molecular variation within a ciliate genus taxonomic descriptions of three i dysteria i species ciliophora cyrtophoria with the establishment of a new species |
| topic | ciliature molecular phylogeny morphological diversity new species SSU rDNA sequence |
| url | https://www.mdpi.com/1422-0067/23/3/1764 |
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