Description of Euplotes versatilis n. sp., a marine tropical ciliate exhibiting an unusually extensive phenotypic plasticity

Tuffrau, M.; Fryd-Versavel, G.; Tuffrau, H; Génermont, Jean

doi:10.1016/s0932-4739(00)80041-3

Cited by 14 publications

(10 citation statements)

References 31 publications

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“…The autapomorphy of the genus Moneuplotes is apparently the single dorsal silverline pattern together with an as yet not specified genetic apomorphy. Admittedly, the single pattern might also occur in the exceptional euplotid E. versatile that shows an extreme variability in all taxonomically relevant characters, including the dorsal silverline pattern which ranges from the single via the double to the complex type as a result of unequal cell division (Tuffrau et al 2000). The 10 frontoventral cirri, on the other hand, not only occur in Moneuplotes, but also Euplotes.…”

Section: Comparison With Similar Congenersmentioning

confidence: 99%

Description of the Halophile Euplotes qatarensis nov. spec. (Ciliophora, Spirotrichea, Euplotida) Isolated from the Hypersaline Khor Al‐Adaid Lagoon in Qatar

Fotedar

Stoeck

Filker

et al. 2016

J Eukaryotic Microbiology

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The morphology, ontogenesis, and phylogenetic relationships of a halophile euplotid ciliates, Euplotes qatarensis nov. spec., isolated from the Khor Al-Adaid Lagoon in Qatar were investigated based on live observation as well as protargol- and silver nitrate-impregnated methods. The new species is characterised by a combination of features: the halophile habitat, a cell size of 50-65 × 33-40 μm, seven dorsal ridges, 10 commonly sized frontoventral cirri, two widely spaced marginal cirri, 10 dorsolateral kineties, and a double silverline pattern. The morphogenesis is similar to that of its congeners: (i) the oral primordium develops hypoapokinetally and the parental oral apparatus is retained; (ii) the frontoventral-transverse field of five streaks gives rise to the frontal, ventral, and transverse cirri, but not to the cirri I/1 and the marginal cirri; (iii) the dorsal somatic ciliature develops by intrakinetal proliferation of basal bodies in two anlagen per kinety that are just anterior and posterior to the future division furrow; (iv) the caudal cirri are formed by the two rightmost dorsolateral kineties. The SSU rDNA sequence of E. qatarensis branches with full support in the Euplotopsis elegans-Euplotes nobilii-Euplotopsis raikovi clade. The closest related publicly available SSU rDNA sequence is the one of E. nobilii, with which E. qatarensis has 93.4% sequence similarity. Euplotes parawoodruffi Song & Bradbury, 1997 is transferred to the genus Euplotoides based on the absence of frontoventral cirrus VI/3.

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Section: Comparison With Similar Congenersmentioning

confidence: 99%

Description of the Halophile Euplotes qatarensis nov. spec. (Ciliophora, Spirotrichea, Euplotida) Isolated from the Hypersaline Khor Al‐Adaid Lagoon in Qatar

Fotedar

Stoeck

Filker

et al. 2016

J Eukaryotic Microbiology

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“…balteatus [55] and the “supergiant”-forming E . versatilis [63]. Since there is scant knowledge about the function of these structures, it’s impossible to speculate about potential adaptive reasons for these changes.…”

Section: Discussionmentioning

confidence: 99%

Biogeography and Character Evolution of the Ciliate Genus Euplotes (Spirotrichea, Euplotia), with Description of Euplotes curdsi sp. nov.

et al. 2016

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Ciliates comprise a diverse and ecologically important phylum of unicellular protists. One of the most specious and best-defined genera is Euplotes, which constitutes more than 70 morphospecies, many of which have never been molecularly tested. The increasing number of described Euplotes taxa emphasizes the importance for detailed characterizations of new ones, requiring standardized morphological observations, sequencing of molecular markers and careful comparison with previous literature. Here we describe Euplotes curdsi sp. nov., distinguishable by the combination of the following features: 45–65 μm length, oval or elongated shape with both ends rounded, narrow peristome with 25–34 adoral membranelles, conspicuous paroral membrane, double-eurystomus dorsal argyrome type, 6–7 dorsolateral kineties and 10 frontoventral cirri. Three populations of the novel species have been found in brackish and marine samples in the Mediterranean and the White Sea. We provide the SSU rRNA gene sequences of these populations, and an updated phylogeny of the genus Euplotes. Using the molecular phylogenetic tree, we inferred aspects of the biogeographical history of the genus and the evolution of its most important taxonomic characters in order to provide a frame for future descriptions. Ultimately, these data reveal recurrent trends of freshwater invasion and highlight the dynamic, yet convergent, morphological evolution of Euplotes.

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“…On the other hand, Tuffrau et al (2000) show that in E. versatilis all dargyrome types can be expressed by a single strain according to physiological and ecological conditions. The widespread lack of correlation of the different dargyrome patterns with the SSU rRNA sequences observed in the present study, along with the occurrence of both single and multiple patterns in species positioned in terminal branches, points to the primitiveness of the double-dargyrome condition.…”

Section: Phylogeny Within the Ciliate Genus Euplotesmentioning

confidence: 97%

A Molecular Approach to the Tangled Intrageneric Relationships Underlying Phylogeny in Euplotes (Ciliophora, Spirotrichea)

Petroni

Dini

Verni

et al. 2002

Molecular Phylogenetics and Evolution

116

106

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Description of Euplotes versatilis n. sp., a marine tropical ciliate exhibiting an unusually extensive phenotypic plasticity

Cited by 14 publications

References 31 publications

Description of the Halophile Euplotes qatarensis nov. spec. (Ciliophora, Spirotrichea, Euplotida) Isolated from the Hypersaline Khor Al‐Adaid Lagoon in Qatar

Description of the Halophile Euplotes qatarensis nov. spec. (Ciliophora, Spirotrichea, Euplotida) Isolated from the Hypersaline Khor Al‐Adaid Lagoon in Qatar

Biogeography and Character Evolution of the Ciliate Genus Euplotes (Spirotrichea, Euplotia), with Description of Euplotes curdsi sp. nov.

A Molecular Approach to the Tangled Intrageneric Relationships Underlying Phylogeny in Euplotes (Ciliophora, Spirotrichea)

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