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19 results for “Peridinium”
Fig.4 in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
Fig.4 Cells with bulges of strain GeoM*979. a‒d Light microscopy, e‒j scanning electron microscopy; bulges are indicated by arrows. a‒b Different shapes and colours of cells with two bulges on hypotheca. c Vital cell with bulges on epi- and hypotheca. d Necrotic cell with bulges on epi- and hypotheca. e Dorsal view with prominent bulges on hypotheca and possibly smaller bulges on epitheca. f Right lateral view with bulge on hypotheca. g Antapical view with prominent bulge on plate 2′′′′ and smaller bulge on plate 5′′′. h Apical view of a cell with bulge on plate 4′. j Lateral view of a cell with bulges on epiand hypotheca. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; n′′′: postcingular plate; n′′′′: antapical plate; na: anterior intercalary plate. Scale bar=10 µm
Fig. 3 in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
Fig. 3 Developmental stages of strain GeoM*979. a‒d, f‒g Light microscopy, e scanning electron microscopy. a Two thecate cells enclosed in the parental theca. b Opened theca, ventral view, note that opening starts from the dorsal part of the cell and the lid composed of the plates 3′, 1a‒3a, 3′′‒5′′. c Two connected, swimming cells. d Two connected, immotile cells enclosed in the parental thecae. e Coccoid cell. f Opened theca, dorsal view, note that a ventral lid is removed and the dorsal part still connected to the hypotheca. g Coccoid cell. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; na: anterior intercalary plate. Scale bar= 10 µm
Fig. 1 in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
Fig. 1 The original material of Peridinium tuberosum. Numbers indicated by Meunier (1919) follow: (23) Ventral view with sulcus extending onto the epitheca (similar to Peridinium cinctum but different from Peridinium gatunense). (24) Dorsal view. (25) Apical view with asymmetrical epithecal plate pattern (similar to P. cinctum). (26) Antapical view. (27) Right lateral view with a slight tilt towards the front. Note the bulges on the posterior end of the cell in 23‒24, 26‒27, which are distinctive traits of P. tuberosum
Fig. 2 in Morphological and molecular variability of Peridinium volzii Lemmerm. (Peridiniaceae, Dinophyceae) and its relevance for infraspecific taxonomy
Fig. 2 Box plots displaying correlations between cell size (of motile cells; A, B) or side length (of empty thecate cells; C) in selected strains. Colours correspond to the ribotype of each strain (blue: ribotype I; magenta: ribotype II; orange: ribotype III). Statistically significant clusters are indicated with letters a, b and c and were calculated with Tukey's Honest Significant Difference (HSD) test (p-values <0.05). Box plots depict percentile values from 25–75% (box), median (bar inside the box), standard deviation (whiskers) and outliers (dots)
Fig. 2 in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
Fig. 2 Flagellated cells of strain GeoM*979. a‒f Light microscopy, g‒m scanning electron microscopy, a‒d images taken from the same cell. a Dorsal view. b‒c Chloroplasts (as inferred from autofluorescence) at two different focal planes, note the space occupied by the nucleus. d Cell nucleus with chromosomes (as inferred from astra blue staining). e Ventral view of living cell. f Empty theca (mirrored) portraying cellular plates on the ventral side. g Apical view. h Dorsal view. j Ventral view. k Antapical view. l Right lateral view. m Left lateral view. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; n′′′; postcingular plate; n′′′′: antapical plate; na: anterior intercalary plate; sp: posterior sulcal plate. Scale bar= 10 µm
◂Fig. 6 A molecular phylogeny of 56 systematically representative Peridiniaceae, including 42 accessions assignable to P. cinctum from various geographic regions. Maximum likelihood tree (– ln = 21,884.93), as inferred from a rRNA nucleotide alignment (1137 parsimony-informative sites) and with strain number information. Numbers on branches are ML bootstrap (above) and Bayesian support values (below) for the clusters (asterisks indicate maximal support values, values under 50 and 0.90, respectively, are not shown). Clades are indicated (CZE Czech Republic, E East, GER Germany, HET Heterocapsaceae, N North, PPE Protoperidiniaceae, POL Poland, rbn ribotype n, S South, SWE Sweden, UKR Ukraine, W West) in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
◂Fig. 6 A molecular phylogeny of 56 systematically representative Peridiniaceae, including 42 accessions assignable to P. cinctum from various geographic regions. Maximum likelihood tree (– ln = 21,884.93), as inferred from a rRNA nucleotide alignment (1137 parsimony-informative sites) and with strain number information. Numbers on branches are ML bootstrap (above) and Bayesian support values (below) for the clusters (asterisks indicate maximal support values, values under 50 and 0.90, respectively, are not shown). Clades are indicated (CZE Czech Republic, E East, GER Germany, HET Heterocapsaceae, N North, PPE Protoperidiniaceae, POL Poland, rbn ribotype n, S South, SWE Sweden, UKR Ukraine, W West)
◂Fig. 1 Morphology of thecate and coccoid cells, with labelled thecal plates. a–c, i, m Light microscopy, d–h, k–l scanning electron microscopy. a Ventral view of strain GeoM*788; b dorsal view of strain GeoM*793; c apical view of strain GeoK*044; d ventral view of strain GeoK*037; e dorsal view of strain GeoM*788; f apical view of strain GeoK*024, with the dehiscence of epithecal opening indicated by a blue line; g antapical view of strain GeoK*044; h leftlateral view of strain GeoM*866; i motile cell of strain GeoK*037; k–m coccoid cells showing variability in shape and size of strains k GeoM*866, l GeoM*793 and m GeoK*024. Abbreviations: n′: apical plate, n′′: precingular plate, n′′′: postcingular plate, n′′′′: antapical plate, na: anterior intercalary plate, nC: cingular plate, Sa: anterior sulcal plate, Sd: right sulcal plate, Sp: posterior sulcal plate. Ss: left sulcal plate. Scale bar: 10 µm. UA: 15 kV in Morphological and molecular variability of Peridinium volzii Lemmerm. (Peridiniaceae, Dinophyceae) and its relevance for infraspecific taxonomy
◂Fig. 1 Morphology of thecate and coccoid cells, with labelled thecal plates. a–c, i, m Light microscopy, d–h, k–l scanning electron microscopy. a Ventral view of strain GeoM*788; b dorsal view of strain GeoM*793; c apical view of strain GeoK*044; d ventral view of strain GeoK*037; e dorsal view of strain GeoM*788; f apical view of strain GeoK*024, with the dehiscence of epithecal opening indicated by a blue line; g antapical view of strain GeoK*044; h leftlateral view of strain GeoM*866; i motile cell of strain GeoK*037; k–m coccoid cells showing variability in shape and size of strains k GeoM*866, l GeoM*793 and m GeoK*024. Abbreviations: n′: apical plate, n′′: precingular plate, n′′′: postcingular plate, n′′′′: antapical plate, na: anterior intercalary plate, nC: cingular plate, Sa: anterior sulcal plate, Sd: right sulcal plate, Sp: posterior sulcal plate. Ss: left sulcal plate. Scale bar: 10 µm. UA: 15 kV
◂Fig. 4 A molecular tree of 51 systematically representative Peridiniaceae, including all 28 accessions assignable to P. volzii. Maximum Likelihood tree (–ln = 22,017.62), as inferred from a rRNA nucleotide alignment (1,129 parsimony-informative sites) and with strain number information. Numbers on branches are ML bootstrap (above) and Bayesian support values (below) for the clusters (asterisks indicate maximal support values, values under 50 and 0.90, respectively, are not shown). Clades are indicated (abbreviations: HET, Heterocapsaceae; PPE, Protoperidiniaceae) in Morphological and molecular variability of Peridinium volzii Lemmerm. (Peridiniaceae, Dinophyceae) and its relevance for infraspecific taxonomy
◂Fig. 4 A molecular tree of 51 systematically representative Peridiniaceae, including all 28 accessions assignable to P. volzii. Maximum Likelihood tree (–ln = 22,017.62), as inferred from a rRNA nucleotide alignment (1,129 parsimony-informative sites) and with strain number information. Numbers on branches are ML bootstrap (above) and Bayesian support values (below) for the clusters (asterisks indicate maximal support values, values under 50 and 0.90, respectively, are not shown). Clades are indicated (abbreviations: HET, Heterocapsaceae; PPE, Protoperidiniaceae)
FIGURE 3 in Taxonomic clarification of the dinophyte Peridinium acuminatum Ehrenb., Scrippsiella acuminata, comb. nov. (Thoracosphaeraceae, Peridiniales)
FIGURE 3. Motile and immotile stages during life history of Scrippsiella acuminata, comb. nov. (GeoB 427; A–G: light microscopy, all at the same scale; H–M: scanning electron microscopy). A. Thecate cell of the small-sized morphotype. B. Thecate cell of mid-sized morphotype. C. Thecate cell of large-sized morphotype. D. Immotile cell of the mid-sized morphotype with thecal remnant. E. Two attached mid-sized thecate cells at the bottom of the cultivation plate. F. Coccoid cell with long thin processes. G. Coccoid cell with short thick processes. H. Ventral view of mid-sized thecate cell. I. Dorso-lateral view of mid-sized thecate cell. G. Coccoid cell with long thin processes. K. Coocoid cell with short, thick processes. L. Close-up view of long and thin processes. M. Close-up view of short and thick processes.
FIGURE 5 in Taxonomic clarification of the dinophyte Peridinium acuminatum Ehrenb., Scrippsiella acuminata, comb. nov. (Thoracosphaeraceae, Peridiniales)
FIGURE 5. Schematic drawing of the thecal plates. A. Ventral view. B. Dorsal view. C. Apical view. D. Antapical view. E. Enlarged sulcal region. Abbreviations: cp: closing plate (graphically surrounded by the pore plate). n': apical plate. n": precingular plate. n''': postcingular plate. n'''': antapical plate. na: anterior intercalary plate. nC: cingular plate. Sa: anterior sulcal plate. Sd: right sulcal plate. Sm: median sulcal plate. Sp: posterior sulcal plate. Ss: left sulcal plate. x: canal (preapical) plate. Arrowheads in C–D indicate plate overlap pattern.
FIGURE 4 in Taxonomic clarification of the dinophyte Peridinium acuminatum Ehrenb., Scrippsiella acuminata, comb. nov. (Thoracosphaeraceae, Peridiniales)
FIGURE 4. Tabulation pattern of the thecate cells of Scrippsiella acuminata, comb. nov. A. Apical view of epitheca. B. Ventral view of hypotheca with cingulum and sulcal region. C. Antapical view of hypotheca. D. Apical view of the apical pore complex. E. Apical view of epitheca with unusual additional plates. F. Small-sized thecate cell with unusual additional plates (as homologies to the typical conformation is dubious, plates are not indicated). Abbreviations: Apo: apical pore plate. cp: closing plate. n': apical plate. n": precingular plate. n''': postcingular plate. n'''': antapical plate. na: anterior intercalary plate. nC: cingular plate. pp: pore plate. Sa: anterior sulcal plate. Sd: right sulcal plate. Sm: median sulcal plate. Sp: posterior sulcal plate. Ss: left sulcal plate. x: preapical plate. Arrows in A–C indicate plate overlap pattern.
FIGURE 2 in Taxonomic clarification of the dinophyte Peridinium acuminatum Ehrenb., Scrippsiella acuminata, comb. nov. (Thoracosphaeraceae, Peridiniales)
FIGURE 2. Single cells from the epitype (or copies) of Scrippsiella acuminata, comb. nov. (light microscopy; GeoB 427). A, B. Motile thecate cells. C. Calcareous coccoid cell with processes.
FIGURE 1 in Taxonomic clarification of the dinophyte Peridinium acuminatum Ehrenb., Scrippsiella acuminata, comb. nov. (Thoracosphaeraceae, Peridiniales)
FIGURE 1. Ehrenberg's original material of Peridinium acuminatum (note slight deviations between the illustrations regarding cell shape and internal colouring). A. water-coloured drawing (sheet 938, deposited in the Museum for Natural History, Berlin), B. from which the type pl. II 5 (engraver: B. Wienker) in Ehrenberg (1836) as well as C. pl. XXII (engraver: C.E. Weber) in Ehrenberg (1838) was derived.
FIGURE 16. Peridinium willei f in Checklist, new records, and taxonomic annotations of freshwater thecate dinoflagellate (Dinophyceae) in Colombia
FIGURE 16. Peridinium willei f. willei: A. Ventral view. B. Plate 1'. Bar=10µm. P. willei f. lineatum: C. Ventral view. D. Dorsal view. E. Dorsal apical view. F. Lateral view. G. Antapical view.
FIGURE 14. Peridinium volzii. A Ventral view. B Dorsal view. C Lateral view. D, E and F Epithecal plates configuration. G in Checklist, new records, and taxonomic annotations of freshwater thecate dinoflagellate (Dinophyceae) in Colombia
FIGURE 14. Peridinium volzii. A Ventral view. B Dorsal view. C Lateral view. D, E and F Epithecal plates configuration. G Arrangement of the hypotheca and cingular plates. H sulcal plates. Bar=10µm.
◂Fig. 5 Cells of phylogenetically related strains (light microscopy). a Thecate cell in dorsal view. b Thecate cell in ventral view, note the sulcus extending onto the epitheca (arrow). c Putatively necrotic, thecate cell. d Thecate cell with one bulge on the epitheca (arrow), note that this was the only such cell among thousands of inspected cells. e, f Coccoid cells, apparently without thecae. g Two thecate cells enclosed in the parental theca. h Two connected, immotile cells enclosed in the parental thecae. j Lid of epitheca in dorsal-apical view (mirrored), composed of plates 2′‒4′, all intercalary plates and plates 2′′‒6′′. l‒m Same opened theca in ventral view (l) and dorsal view (m), note the sulcus extending onto the epitheca (arrow), the dorsal opening and all apical and all intercalary plates and plates 3′′‒5′′ remaining with the hypotheca. n Chloroplasts (as inferred from autofluorescence), note the space occupied by the nucleus. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; n′′′: postcingular plate; na: anterior intercalary plate. Scale= 10 µm in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
◂Fig. 5 Cells of phylogenetically related strains (light microscopy). a Thecate cell in dorsal view. b Thecate cell in ventral view, note the sulcus extending onto the epitheca (arrow). c Putatively necrotic, thecate cell. d Thecate cell with one bulge on the epitheca (arrow), note that this was the only such cell among thousands of inspected cells. e, f Coccoid cells, apparently without thecae. g Two thecate cells enclosed in the parental theca. h Two connected, immotile cells enclosed in the parental thecae. j Lid of epitheca in dorsal-apical view (mirrored), composed of plates 2′‒4′, all intercalary plates and plates 2′′‒6′′. l‒m Same opened theca in ventral view (l) and dorsal view (m), note the sulcus extending onto the epitheca (arrow), the dorsal opening and all apical and all intercalary plates and plates 3′′‒5′′ remaining with the hypotheca. n Chloroplasts (as inferred from autofluorescence), note the space occupied by the nucleus. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; n′′′: postcingular plate; na: anterior intercalary plate. Scale= 10 µm
Fig. 7 in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
Fig. 7 Original material of Peridinium gatunense var. carinatum (Steinecke & Lindemann, 1923), note the bulges on the hypotheca and that the sulcus does not extend onto the epitheca. (1) Ventral view with two bulges on hypotheca. (2) Dorsal view with two bulges on hypotheca having comb-like flanges. (3) Apical view with asymmetrical plate pattern, as it is characteristic for the Peridinium cinctum species group (Moestrup & Calado, 2018)
◂Fig. 3 Historically described phenotypical variations and yet undiscovered deviations in the plate pattern of P. volzii. b–c, f, i, l–m Light microscopy, a, d–e, g–h, k scanning electron microscopy. a–f Newly identified deviations a–b plate 4′′ pentagonal in strains a GeoM*793; b GeoM*788; c plate 2a split (strain GeoK*024); d plates 2′′ and 3′′ fused (strain GeoM*866); e plates 1′′′ and 1′′′′ fused (strain GeoM*788); f plates 1a and 3′ fused (strain GeoM*788). g–m Historic infraspecific taxa; g P. guestrowiense forma lineatum (strain GeoM*866); h P. guestrowiense forma compressum (strain GeoM*866); i P. guestrowiense subvar. originale (strain GeoK*024); k P. volzii var. cinctiforme (strain GeoM*793); l P. volzii var. simplex (strain GeoM*789); m P. volzii forma complexum (strain GeoM*793). Abbreviations: n′: apical plate, n′′: precingular plate, n′′′: postcingular plate, n′′′′: antapical plate, na: anterior intercalary plate, nC: cingular plate, split or fused plates are indicated by asterisks. Scale bar= 10 µm. U A= 15 kV in Morphological and molecular variability of Peridinium volzii Lemmerm. (Peridiniaceae, Dinophyceae) and its relevance for infraspecific taxonomy
◂Fig. 3 Historically described phenotypical variations and yet undiscovered deviations in the plate pattern of P. volzii. b–c, f, i, l–m Light microscopy, a, d–e, g–h, k scanning electron microscopy. a–f Newly identified deviations a–b plate 4′′ pentagonal in strains a GeoM*793; b GeoM*788; c plate 2a split (strain GeoK*024); d plates 2′′ and 3′′ fused (strain GeoM*866); e plates 1′′′ and 1′′′′ fused (strain GeoM*788); f plates 1a and 3′ fused (strain GeoM*788). g–m Historic infraspecific taxa; g P. guestrowiense forma lineatum (strain GeoM*866); h P. guestrowiense forma compressum (strain GeoM*866); i P. guestrowiense subvar. originale (strain GeoK*024); k P. volzii var. cinctiforme (strain GeoM*793); l P. volzii var. simplex (strain GeoM*789); m P. volzii forma complexum (strain GeoM*793). Abbreviations: n′: apical plate, n′′: precingular plate, n′′′: postcingular plate, n′′′′: antapical plate, na: anterior intercalary plate, nC: cingular plate, split or fused plates are indicated by asterisks. Scale bar= 10 µm. U A= 15 kV
FIGURE 17. Peridinium limbatum. A. Ventral view. B. Dorsal view. C. Sulcal plates. D in Checklist, new records, and taxonomic annotations of freshwater thecate dinoflagellate (Dinophyceae) in Colombia
FIGURE 17. Peridinium limbatum. A. Ventral view. B. Dorsal view. C. Sulcal plates. D. Sa: anterior sulcal plate. E. Sp: posterior sulcal plate. F. Theca: ventral view. G. Theca: dorsal view. Bar in A, B=10µm.
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