Quelques observations sur le cilie Sonderia sinuataKahl, 1931 (Ciliophora, Trichostomatida)

Sola, Par A.; Guinea, Almudena; Longás, J.F.; Fernández‐Galiano, Dimas

doi:10.1016/s0003-9365(89)80035-1

Cited by 4 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The depth of oral cavity is always not more than 1/3 of body length. On the ventral side, the ciliate kinetom (20–31 ciliary rows, ~ 28 on average) consists of two distinct parts: the ventro-lateral kineties (8–13 ciliary rows, ~ 11 on average), which are continuous along the cell body, and the ventro-frontal kineties (12–18 ciliary rows, ~ 17 on average), which are not continuous (Figure 4A); they start after the membranelle-like ciliary rows and end posteriorly where they meet the left ventro-lateral kineties, forming the so-called ventral secant system [9]; 4–5 rows of the latter group start from the left margin of oral cleft (Figures 3A, 4A).…”

Section: Resultsmentioning

confidence: 99%

“…S. vorax can be easily separated from some of the similar-sized species, S. pharyngea and S. labiata , because these ciliates do not show a differentiation of ventral kinetom, the so-called secant system [9] (Table 2). On the contrary, this feature is probably shared between S. vorax and S. sinuata [9], although it has not been indicated neither by Dragesco & Dragesco-Kernéis [4] nor by Al-Rasheid [45].…”

Section: Discussionmentioning

confidence: 99%

“…On the contrary, this feature is probably shared between S. vorax and S. sinuata [9], although it has not been indicated neither by Dragesco & Dragesco-Kernéis [4] nor by Al-Rasheid [45]. Anyway, S. vorax differs from S. sinuata for: cell size (180–240 μm vs. 100–150 μm); buccal cavity size (1/2 of cell body vs. 1/3 of cell body); number of dorsal kineties (45 vs. 25–31); size (and probably structure) of the micronucleus [4,9] (Table 2). The oral ciliature consists of monokinetids in S. vorax while some contradictions do exist in the literature for S. sinuata [4,9].…”

Section: Discussionmentioning

confidence: 99%

“…Anyway, S. vorax differs from S. sinuata for: cell size (180–240 μm vs. 100–150 μm); buccal cavity size (1/2 of cell body vs. 1/3 of cell body); number of dorsal kineties (45 vs. 25–31); size (and probably structure) of the micronucleus [4,9] (Table 2). The oral ciliature consists of monokinetids in S. vorax while some contradictions do exist in the literature for S. sinuata [4,9]. …”

Section: Discussionmentioning

confidence: 99%

“…These interesting ciliates are ubiquitous and common in the sapropelic environment of salt marshes and in ecologically similar brackish water sites with oxygen deficiency [2-9]. …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Morphology, ultrastructure, and molecular phylogeny of the ciliate Sonderia vorax with insights into the systematics of order Plagiopylida

et al. 2013

View full text Add to dashboard Cite

BackgroundCiliates of the family Sonderiidae are common members of the eukaryotic communities in various anoxic environments. They host both ecto- and endosymbiotic prokaryotes (the latter associated with hydrogenosomes) and possess peculiar morpho-ultrastructural features, whose functions and homologies are not known. Their phylogenetic relationships with other ciliates are not completely resolved and the available literature, especially concerning electron microscopy and molecular studies, is quite scarce.ResultsSonderia vorax Kahl, 1928 is redescribed from an oxygen-deficient, brackish-water pond along the Ligurian Sea coastlines of Italy. Data on morphology, morphometry, and ultrastructure are reported. S. vorax is ovoid-ellipsoid in shape, dorsoventrally flattened, 130 x 69 μm (mean in vivo); it shows an almost spherical macronucleus, and one relatively large micronucleus. The ventral kinetom has a “secant system” including fronto-ventral and fronto-lateral kineties. A distinctive layer of bacteria laying between kineties covers the ciliate surface. Two types of extrusomes and hydrogenosomes-endosymbiotic bacteria assemblages are present in the cytoplasm. The phylogeny based on 18S rRNA gene sequences places S. vorax among Plagiopylida; Sonderiidae clusters with Plagiopylidae, although lower-level relationships remain uncertain. The studied population is fixed as neotype and the ciliate is established as type species of the genus, currently lacking.ConclusionsThis is the first description of a representative of Sonderiidae performed with both morphological and molecular data. To sum up, many previous hypotheses on this interesting, poorly known taxon are confirmed but confusion and contradictory data are as well highlighted.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…These interesting ciliates are ubiquitous and common in the sapropelic environment of salt marshes and in ecologically similar brackish water sites with oxygen deficiency [2-9]. …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations