Morphology and systematics of two freshwater urostylid ciliates, with description of a new species (Protista, Ciliophora, Hypotrichia)

Pan, Xuming; Fan, Yawen; Gao, Feng; Qiu, Zijian; Al‐Farraj, Saleh A.; Warren, Alan; Shao, Chen

doi:10.1016/j.ejop.2015.11.003

Cited by 19 publications

(12 citation statements)

References 48 publications

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“…Recently, Pan et al. () found a new Neourostylopsis species, N. flava , which possesses six to eight frontal cirri arranged approximately in two rows. As shown in Pan et al.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, Neourostylopsis did not cluster with Metaurostylopsis in all trees although they are morphologically similar. This is due to (i) the frontal cirri are arranged in a corona in Neourostylopsis , whereas there are only three enlarged frontal cirri in Metaurostylopsis ; and; (ii) the midventral complex is composed of midventral pairs and midventral rows in Metaurostylopsis , whereas only midventral pairs are present in Neourostylopsis (Chen, Huang, & Song, ; Chen, Shao et al., ; Lu, Wang, Huang, Shi, & Chen, ; Pan et al., ; Shao, Miao et al., ; Wang, Hu, Huang, Al‐Rasheid, & Warren, ).…”

Section: Discussionmentioning

confidence: 99%

“…Comparing Apourostylopsis and Neourostylopsis, also considered the length of the midventral complex to be a major morphological distinction (i.e., extending to the transverse cirri in Apourostylopsis vs. extending only to the midbody in N. flavicana, Nesticella songi and N. orientalis). Recently, Pan et al (2016) found a new Neourostylopsis species, N. flava, which possesses six to eight frontal cirri arranged approximately in two rows. As shown in Pan et al (2016), species of Neourostylopsis formed a monophyletic assemblage in all our gene trees (Figures 1-3).…”

Section: Re-exploration Of the Relationship Between Neourostylopsismentioning

confidence: 99%

“…Recently, Pan et al (2016) found a new Neourostylopsis species, N. flava, which possesses six to eight frontal cirri arranged approximately in two rows. As shown in Pan et al (2016), species of Neourostylopsis formed a monophyletic assemblage in all our gene trees (Figures 1-3). Based on the above morphological and phylogenetic information, we conclude that the major distinction between Apourostylopsis and Neourostylopsis is not the length of the midventral complex but rather the number and arrangement of the frontal cirri (more than three and arranged in distinct or indistinct corona in Neourostylopsis vs. typical three in a clearly pattern in Apourostylopsis).…”

Section: Re-exploration Of the Relationship Between Neourostylopsismentioning

confidence: 99%

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Multigene‐based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family

et al. 2018

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The Urostylida is a major taxon of hypotrichs with many unresolved evolutionary relationships. Due to incomplete or inaccurate character states and a paucity of morphogenetic data, the phylogeny of several taxa within urostylids is unresolved. Molecular phylogeny studies based on single gene (SSU rDNA) data may lead to conflict between morphological classification and SSU rDNA tree. In this work, 20 new sequences (SSU rDNA, ITS1‐5.8S‐ITS2 and LSU rDNA) of five genera of urostylids are provided to further investigate the phylogenetic relationships of this group. The main findings are as follows: (i) the establishment of Hemicycliostylidae, a novel family presently including Hemicycliostyla and Australothrix, is supported by both single gene and concatenated phylogenies; (ii) all molecular data support the exclusion of Eschaneustyla from the family Epiclintidae; (iii) Australothrix, Bergeriella and Thigmokeronopsis are distinctly separated in all gene trees although they share the character that each posterior streak generates the ventral row together with the midventral pair; (iv) compared with closely related genera in all trees, that is Metaurostylopsis and Apourostylopsis, Neourostylopsis is characterized by having more than three frontal cirri arranged in distinct or indistinct corona rather than the length of the midventral complex; (v) Hemicycliostyla and Pseudourostyla, two morphologically similar genera, do not form a monophyletic group in all molecular trees, suggesting that the bicorona, multiple marginal cirral rows and high numbers of dorsal kineties may result from convergent evolution; (vi) species of Bakuella fall into three separate clades in all trees suggesting that this genus needs to be split.

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“…Recently, Pan et al. () found a new Neourostylopsis species, N. flava , which possesses six to eight frontal cirri arranged approximately in two rows. As shown in Pan et al.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Re-exploration Of the Relationship Between Neourostylopsismentioning

confidence: 99%

Section: Re-exploration Of the Relationship Between Neourostylopsismentioning

confidence: 99%

See 2 more Smart Citations

Multigene‐based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family

et al. 2018

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“…Unfortunately, the low values of oxytrichids on the nodes for these analyses have been easily found before in oxytrichids (e.g., Chen et al 2015, Fan et al 2015, Jung et al 2016a. Although the urostylids, one of several large groups in the hypotrichs, have been analysed using the same gene, their supporting values are higher than the oxytrichids (e.g., Jo et al 2015, Jung et al 2016b, Pan et al 2016. To improve the resolution of phylogenetic relationships in the oxytrichids, more sampling of other oxytrichids or expanding the genes targeted for the analyses is required (for instance, see Zhao et al 2012, Gao et al 2014.…”

Section: Molecular Phylogeny Of Pseudocyrtohymenides Lacunaementioning

confidence: 99%

Morphology and Molecular Phylogeny of Pseudocyrtohymenides lacunae nov. gen., nov. spec. (Ciliophora: Oxytrichidae) from South Korea

2017

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* These authors equally contributed to this work.Abstract. We collected an 18-cirri oxytrichid ciliate from the brackish lagoon Songjiho, South Korea, in March 2012. Based on analyses of morphological and molecular attributes, we conclude that it is new genus and species. Pseudocyrtohymenides lacunae nov. gen., nov. spec. has similar morphological attributes to the genus Pseudocyrtohymena, however, the former species lacks caudal cirri. The sequence similarity of the nuclear small subunit ribosomal RNA (SSU rRNA) gene was 99.4% (10 nt difference) between Pseudocyrtohymenides lacunae and Pseudocyrtohymena koreana (type species).

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Morphology and SSU rDNA sequence analysis of two hypotrichous ciliates (Protozoa, Ciliophora, Hypotrichia) including the new species Metaurostylopsis parastruederkypkeae n. sp.

Wang

Huang

et al. 2016

J. Ocean Univ. China

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The morphology and phylogeny of two hypotrichous ciliates, Metaurostylopsis parastruederkypkeae n. sp. and Neourostylopsis flavicana (Wang et al., 2011) Chen et al., 2013 were investigated based on morphology, infraciliature and the small subunit (SSU) ribosomal RNA gene (rRNA) sequence. The new species, M. parastruederkypkeae n. sp. was identified according to its characteristics: body shape ellipsoidal, size about (165-200) × (45-60) µm in vivo, cell color reddish; two types of cortical granules including wheat grain-like and yellow-greenish larger ones along the marginal cirri rows and dorsal kineties and dot-like and reddish smaller ones, grouped around marginal cirri on ventral side and arranged in short lines on dorsal side; 26-41 adoral membranelles; three frontal and one parabuccal, five to seven frontoterminal, one buccal, and three to six transverse cirri; seven to thirteen midventral pairs; five to nine unpaired ventral cirri, five to seven left and three to five right marginal rows; and three complete dorsal kineties. Phylogenetic analysis based on SSU rDNA sequences showed that both Metaurostylopsis and Neourostylopsis are monophyletic. As the internal relationship between and within both genera are not clear, further studies on the species in these two genera are necessary. The key characteristics of all known twelve Metaurostylopsis-Apourostylopsis-Neourostylopsis species complex were updated.

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Morphology and systematics of two freshwater urostylid ciliates, with description of a new species (Protista, Ciliophora, Hypotrichia)

Cited by 19 publications

References 48 publications

Multigene‐based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family

Multigene‐based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family

Morphology and Molecular Phylogeny of Pseudocyrtohymenides lacunae nov. gen., nov. spec. (Ciliophora: Oxytrichidae) from South Korea

Morphology and SSU rDNA sequence analysis of two hypotrichous ciliates (Protozoa, Ciliophora, Hypotrichia) including the new species Metaurostylopsis parastruederkypkeae n. sp.

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