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38 results for “Plumatella”
FIGURE 5. Plumatella pirassununga n in New species, genera, families, and range extensions of freshwater bryozoans in Brazil: the tip of the iceberg?
FIGURE 5. Plumatella pirassununga n. sp. Colony showing recumbent branches and several statoblasts inside, scale bar = 2 mm.
FIGURE 5. Plumatella spencerjonesae n in Further species and range extensions of Amazonian bryozoans: chipping away at the iceberg
FIGURE 5. Plumatella spencerjonesae n. sp. (a) Portion of a colony. (b) Dorsal (left) and ventral (right) floatoblast valves showing irregular outline. (c) Floatoblast in profile showing curvature. (d) SEM image of floatoblasts, dorsal side (left), ventral side (right). (e) Enlarged portion of dorsal side showing fenestra tubercles. (f) Sessoblast frontal valve tubercles. (g) Sessoblast showing heavy tuberculation and slightly thickened rim of the annulus. Scale bars: a = 2 mm; b, c, d, g = 100 µm.
FIGURE 4. Plumatella hartikainenae n in Further species and range extensions of Amazonian bryozoans: chipping away at the iceberg
FIGURE 4. Plumatella hartikainenae n. sp. (a) Portion of a colony. (b) Dorsal (left) and ventral (right) floatoblast valves. (c) Floatoblast lateral view showing a typical slim profile. (d) SEM image of floatoblasts, dorsal side (left), ventral side (right). (e) Enlarged portion of the ventral side showing hypertubercles. (f) SEM view of floatoblast in profile. Scale bars: a = 2 mm; b, c, d, f = 100 µm.
FIGURE 3. Plumatella divae n in Further species and range extensions of Amazonian bryozoans: chipping away at the iceberg
FIGURE 3. Plumatella divae n. sp. statoblasts. (a) Dorsal (left) and ventral (right) floatoblast valves. (b) dorsal fenestra showing strong tuberculation. (c) SEM image showing floatoblast with ribbed suture and cells of the annulus. (d) Closer SEM view of floatoblast annulus cells with scattered raised lines. Scale bars: a = 100 µm; b = 50 µm; c = 30 µm; d = 5 µm.
FIGURE 4. Plumatella bombayensis. Statoblasts from ZEV 3804 in Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata
FIGURE 4. Plumatella bombayensis. Statoblasts from ZEV 3804, Zoological Gardens, Kolkata. (a) Floatoblast dorsal valve showing small, unmarked fenestra; (b) Floatoblast ventral valve showing pronounced fenestra reticulation; (c) Sessoblast showing reticulation in which each cell bears a single tubercle; (d) Partial enlargement of previous image. Scale bars for a–c = 100 µm, scale bar for d = 20 µm.
FIGURE 5. Plumatella longigemmis. Statoblasts from specimen P47 in Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata
FIGURE 5. Plumatella longigemmis. Statoblasts from specimen P47 labeled Plumatella longigemmis (syntype), now recognized as Hyalinella lendenfeldi. (a) Floatoblast valves with dorsal valve on the left; (b) SEM image showing the floatoblast dorsal side in greater detail. Scale bars = 100 µm.
FIGURE 17. Plumatella raoi n in Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata
FIGURE 17. Plumatella raoi n. sp. (a) Two sessoblasts showing unusual cellular annulus and heavily tuberculated frontal valve, scale bar = 100 μm; (b) Closer view of sessoblast annulus, scale bar = 10 μm; (c) SEM images of floatoblast valves with dorsal valve on the left, scale bar = 100 µm; (d) Enlargement of a portion of previous image showing hypertubercles and porelike structures; (e) Floatoblast valves with dorsal valve on the left, scale bar = 100 μm; (f) sessoblast valves with frontal valve on the left, scale bar = 100 μm.
FIGURE 14. Plumatella dhritiae n in Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata
FIGURE 14. Plumatella dhritiae n. sp. from the holotype ZSI No. P1190. Floatoblast valves, with dorsal valve on the left, scale bar = 100 µm.
FIGURE 16. Plumatella paltensis n in Phylactolaemate bryozoans at the Zoological Survey of India and a taxonomic key to Indian Phylactolaemata
FIGURE 16. Plumatella paltensis n. sp. (a) Statoblasts from P1198 shown with light microscopy, from top to bottom: floatoblast dorsal valve, floatoblast ventral valve, sessoblast frontal valve; (b) SEM micrograph of floatoblasts from ZEV 4800, dorsal on left, ventral on right, scale bar = 100 µm; (c) SEM view of sessoblast from ZEV 4800 with magnified image on the right. Scale bars for all images = 100 µm.
Figure 3 from: Carballeira R, Romay CD, Ramos A (2020) First record of a freshwater bryozoan species in Cuba: Plumatella repens (Linnaeus, 1758) (Phylactolaemata, Bryozoa). ZooKeys 918: 151-160. https://doi.org/10.3897/zookeys.918.38665
Figure 3 Geographical distribution of Plumatella species in the insular Caribbean area, indicating the new records of P. repens in Cuba (1) La Niña Bonita Reservoir and (2) Ciénaga de Zapata Swamp.
Figure 1 from: Carballeira R, Romay CD, Ramos A (2020) First record of a freshwater bryozoan species in Cuba: Plumatella repens (Linnaeus, 1758) (Phylactolaemata, Bryozoa). ZooKeys 918: 151-160. https://doi.org/10.3897/zookeys.918.38665
Figure 1 Presence of Plumatella repens (Linnaeus, 1758), in the wetlands of Cuba: A Location map of localities (1) La Niña Bonita Reservoir and (2) Ciénaga de Zapata Swamp B Aerial photograph of the La Niña Bonita Reservoir (ESRI World Imagery, ArcGIS 10.0) C Aerial photograph of the Ciénaga de Zapata Swamp (ESRI World Imagery, ArcGIS 10.0).
Figure 2 from: Carballeira R, Romay CD, Ramos A (2020) First record of a freshwater bryozoan species in Cuba: Plumatella repens (Linnaeus, 1758) (Phylactolaemata, Bryozoa). ZooKeys 918: 151-160. https://doi.org/10.3897/zookeys.918.38665
Figure 2 Plumatella repens (Linnaeus, 1758), floatoblast from La Niña Bonita Reservoir and the Ciénaga de Zapata Swamp (Cuba), SEM: A View of dorsal valve B View of ventral valve C Suture between valves is a single cord with a row of low tubercles on either side D Section of the annulus showing the connection between gas chambers, with circular pores with filiform extensions along the border. Scale bars: 50 µm (A, B); 10 µm (C); 5 µm (D).
Fig. 19 in Reproductive biology, embryonic development and matrotrophy in the phylactolaemate bryozoan Plumatella casmiana
Fig. 19 Ultrastructural details of opposing embryonic and embryo sac tissues in Plumatella casmiana (TEM). a Embryo showing extensions towards the embryo sac and vice versa (arrows). b Massive cytoplasmic extensions of the embryo sac mesoderm including large vesicles, partly opening to the lumen of the embryo sac (asterisk). c Filiform extensions between the cells of the embryo sac and the embryo. d Cells of the
Fig. 20 in Reproductive biology, embryonic development and matrotrophy in the phylactolaemate bryozoan Plumatella casmiana
Fig. 20 Ultrastructure of the contact area between the embryo sac and the embryo (a, c, d) and the embryo sac facing the maternal coelom (b, e) in Plumatella casmiana (TEM). a Mesodermal cell of the embryo sac (left) with a large nucleus and surrounding endoplasmatic reticulum. Vesicles release their contents (arrows) to the lumen of the embryo sac. A presumed endocytotic vesicle (wide arrow) is present in the cytoplasmic extension of the cell of the embryo. A large expelled(?) autophagosome is located in the lumen between the embryo sac and the embryonic cells, the latter with several cytoplasmic processes in contact with the former. Embryonic cells are interconnected by adherens junctions (arrowheads).
Fig. 10 in Reproductive biology, embryonic development and matrotrophy in the phylactolaemate bryozoan Plumatella casmiana
Fig. 10 Semithin sections of the embryo sac of Plumatella casmiana. The border between the ectodermal and mesodermal layer of the embryo sac wall are shown by a dashed line in b–d. a Attachment site of the embryo sac to the body wall showing continuity of its layers with those of the body wall. b Embryo sac with prominent outer mesodermal and thin inner ectodermal layer of (separated by dashed line). Contact cells of blastula-staged embryo are in connection with the ectoderm and mesoderm of the embryo sac (arrowheads). c Longitudinal section showing a cavity lined by the distal maternal ectodermal cells. Contact cells are indicated by arrowhead. d Section of a blastula and its central cavity. Contact cells are apparent in the upper part of the embryo (arrowheads). The epi- thelial lining of the embryo in this region is thicker and indicates mesoderm formation. Abbreviations: b polypide bud, e embryo, ed epidermis (ectodermal origin), esm mesoderm of embryo sac, mec maternal ectoderm cells, ov ovary
Fig. 4 in Reproductive biology, embryonic development and matrotrophy in the phylactolaemate bryozoan Plumatella casmiana
Fig. 4 Gonads and early embyo sac of Plumatella casmiana (semithin sections a, c, d), and whole-mount of Plumatella sp. (b). a Ovary with several oocytes. b Testes at the funiculus. Spermatids contain mostly the nucleus (insert). c Early cleavage stage with an embryo consisting of several blastomeres located at the free end of the embryo sac. The maternal ectodermal lining of the embryo covers the entire embryo (dashed line). d Oblique section of a blastula stage with commencing mesoderm formation (arrowheads indicate first mesodermal cells delaminating from the ectoderm). The maternal ectodermal lining persists (dashed line). Abbreviations: bwm body wall musculature, e embryo, ebs embryo sac, ed epidermis (ectodermal origin), ese embryo sac ectoderm, esm embryo sac mesoderm, fu funiculus; mec maternal ectoderm cells, nu nucleus, nuc nucleolus, ooc oocytes, ov ovary, ovc follicle cell, p peritoneum (mesodermal origin), sp sperm, yd yolk droplets
Fig. 1 Plumatella casmiana. a and b in Reproductive biology, embryonic development and matrotrophy in the phylactolaemate bryozoan Plumatella casmiana
Fig. 1 Plumatella casmiana. a and b Overview of colonies showing the branching growth pattern. c Detail of a piece of a colony showing extended lophophores
Fig. 9 in A new species of the European freshwater bryozoan fauna: Plumatella similirepens WOOD, 2001 (Bryozoa, Phylactolaemata)
Fig. 9: Plumatella similirepens. Scanning electron micrograph of the suture. Scale bar = 20 µm. Fig. 10: Plumatella similirepens. Scanning electron micrograph of the sessoblast. a) Frontal valve. Scale bar = 100 µm. b) Detail of a). Scale bar = 50 µm. Fig. 11: Scanning electron micrograph of dorsal valve. a) Plumatella repens from the same hatchery. Scale bar = 100 µm. b) Detail of a). Scale bar = 50 µm. c) Typical Plumatella repens from an Italian natural site. Scale bar = 100 µm. d) Detail of c). Scale bar = 20 µm.
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