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485 results for “new diatom species”
FIGURES 1–22 in Cyclotella deceusteriana, a new centric diatom species (Bacillariophyta) from the sub-Antarctic Region
FIGURES 1–22. Cyclotella deceusteriana Van de Vijver & Dessein sp. nov. Figures 1–14 taken from the Iles Kerguelen type population (sample BW424), figs 15–22 taken from the Ile de la Possession (Crozet Archipelago) population (sample BW513). Figs 1–22. LM photographs of valves in diminishing size range. Note the different number of central fultoportulae related to a decreasing valve diameter. The arrows indicate the marginal fultoportulae. Scale bar represents 10 μm.
FIGURES 23–29 in Cyclotella deceusteriana, a new centric diatom species (Bacillariophyta) from the sub-Antarctic Region
FIGURES 23–29. Cyclotella deceusteriana Van de Vijver & Dessein sp. nov. All SEM pictures taken from the Iles Kerguelen type population (sample BW424). Fig. 23. External scanning electron microscopy image of an entire valve showing the smooth, flat central area, the central fultoportulae, the undulating marginal structure, the marginal spines and the marginal fultoportulae. The arrows indicate the marginal depressions, split in several small, rounded pores. Figs 24–26. External views of several valves showing a variable number of central fultoportulae, the variability within the marginal spines and the clearly smooth central area. Fig. 27. Internal SEM image of an entire valve showing the smooth, flat central area, the marginal fultoportulae located on each costa, the rimoportula and the central marginal fultoportulae. The arrows indicate unbroken spines. Fig. 28. SEM external detail of the marginal part of a valve showing clearly the spines, the openings of the marginal fultoportulae (double-headed arrows) and the hyaline furrows between the raised striae (arrows). Fig. 29. Internal SEM detail of the rimoportulae and several costae bearing marginal fultoportulae. Note also the very finely areolated striae between the costae. Scale bar represents, 5 μm for figs 24–26 and 1 μm for figs 23, 27–29.
FIGURES 18–25 in Description of Stauroneis saprophila sp. nov. (Bacillariophyta), a new diatom species from anthropogenic environment
FIGURES 18–25. SEM images of Stauroneis saprophila. 18–20 External view of an entire valve. 21. Internal valve view of entire valve. 22. External view of valve apex, with visible girdle band perforations. 23. External view of central area. 24. External view of valve apex with distal raphe end. 25. Internal view of valve apex with clearly visible pseudoseptum. Scale bars: Figs 18–21, 25 = 10 μm, Figs 22–24 = 5 μm.
FIGURES 1–2. Sampling site. 1 in Description of Stauroneis saprophila sp. nov. (Bacillariophyta), a new diatom species from anthropogenic environment
FIGURES 1–2. Sampling site. 1. Place of water outflow from storm sewer. 2. The end section of the water outflow finished by puddle.
FIGURES 34–55 in New diatom species from the Gomphonema subtile group in Southeast Asia
FIGURES 34–55: Gomphonema dalatica Glushchenko, Kulikovskiy & Kociolek sp. nov. LM. Size diminution series, valve views. Figure 39 is of the holotype. Scale bar = 10 μm.
FIGURES 64–75 in New diatom species from the Gomphonema subtile group in Southeast Asia
FIGURES 64–75: Gomphonema prowsei Glushchenko, Kulikovskiy & Kociolek sp. nov. LM. Size diminution series, valve views. Figure 66 is of the holotype.
FIGURES 1–25 in New diatom species from the Gomphonema subtile group in Southeast Asia
FIGURES 1–25: Gomphonema pantropicum Reichardt. LM. Size diminution series, valve views. Scale bar = 10 μm.
FIGURES 56–63 in New diatom species from the Gomphonema subtile group in Southeast Asia
FIGURES 56–63: Gomphonema dalatica Glushchenko, Kulikovskiy & Kociolek sp. nov. SEM. Figs 56, 58, 60, 62 are external views; 57, 59, 61, 63 are internal views. Fig. 56. Whole valve illustrating valve shape. Fig. 57. Whole valve, showing small pseudoseptum at each pole. Fig. 58. Valve center with slightly dilated proximal raphe ends, small, round stigma opening and areolae occluded by flaps that create C-shaped openings. Fig. 59. Valve center with small central nodule bearing recurved proximal raphe ends and slit-like stigmal opening. Striae are in troughs, with thickened rims around each areola. Fig. 60. Headpole, with the hooked-shaped distal raphe end curving onto the valve mantle. C-shaped areolar openings are evident. Fig. 61. Headpole, showing prominent helictoglossa and pseudoseptum. Fig. 62. Footpole, with round porelli positioned mostly on the valve mantle, physically separated, and morphologically distinct from the areolae. Fig. 63. Footpole, with large helictoglossa and pseudoseptum evident. Porelli are occluded internally. Small siliceous projections can be seen around the areolae. Scale bars = 5 μm (Figs 56, 57); 1 μm (Figs 58–60, 62); 0.5 μm (Figs 61, 63).
FIGURES 26–33 in New diatom species from the Gomphonema subtile group in Southeast Asia
FIGURES 26–33: Gomphonema pantropicum Reichardt. SEM. Figs 26, 28, 30, 32 are external views; 27, 29, 31, 33 are internal views. Fig. 26. Whole valve illustrating valve shape, with characteristic headpole and footpole. Fig. 27. Whole valve, showing small pseudoseptum at each pole, and prominent central nodule. Fig. 28. Valve center with slightly dilated proximal raphe ends, small, round stigma opening and areolae occluded by flaps. Fig. 29. Valve center with undulate central nodule bearing bent proximal raphe ends and ovoid stigma opening. The striae occur in trough-like structures. Fig. 30. Headpole, with the hooked-shaped distal raphe end curving onto the valve mantle. Occluded areolae are evident. Fig. 31. Headpole, showing prominent helictoglossa and pseudoseptum. Fig. 32. Footpole, with round porelli physically separated and morphologically distinct from the areolae. Fig. 33. Footpole, with large helictoglossa and pseudoseptum evident. Scale bars = 5 μm (Figs 26, 27); 1 μm (Figs 28–33).
FIGURES 76–83 in New diatom species from the Gomphonema subtile group in Southeast Asia
FIGURES 76–83: Gomphonema prowsei Glushchenko, Kulikovskiy & Kociolek sp. nov. SEM. Figs 76, 78, 80, 82 are external views; 77, 79, 81, 83 are internal views. Fig. 76. Whole valve illustrating valve shape, with characteristic headpole and footpole. Fig. 77. Whole valve with distinctly punctate striae evident. Fig. 78. Headpole, with the hooked-shaped distal raphe end curving onto the valve mantle. C- and E-shaped areolar openings are evident. Fig. 79. Headpole, showing prominent helictoglossa, septum and pseudoseptum. Helictoglossa is offset to one side. Fig. 80. Valve center with slightly dilated proximal raphe ends, round stigma opening and areolae occluded by flaps that create C- or irregularly-shaped openings. Fig. 81. Valve center with small central nodule bearing recurved proximal raphe ends and slit-like stigma opening. Striae are in troughs, with thickened rims around each areola. Fig. 82. Footpole, with round porelli positioned mostly on the valve mantle, physically separated, and morphologically distinct from the areolae. Fig. 83. Footpole, with large helictoglossa and pseudoseptum evident. Porelli are occluded internally. Small siliceous projections can be seen around the areolae. Scale bars = 10 μm
FIGURES 1–13 in Ulnaria verhaegeniana, a new diatom (Bacillariophyta) species from Belgium
FIGURES 1–13. Ulnaria verhaegeniana sp. nov. Type population from the river Zenne, Sint-Pieters-Leeuw (sample VMM156-2016). Figs 1–13. LM views of entire valves. Scale bar = 10 μm.
FIGURES 1–14 in Navicula gogorevii-a new, large-celled diatom species from Vietnam (Southeast Asia)
FIGURES 1–14: Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek, sp. nov. LM, DIC. Slide no 02168. Size diminution series. Figure 3 is of the holotype. Scale bar = 10 μm.
FIGURES 21–26 in Navicula gogorevii-a new, large-celled diatom species from Vietnam (Southeast Asia)
FIGURES 21–26: Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek, sp. nov. SEM. Internal view. Figs 21, 22: Whole valve. Figs 23, 24: Central area. White arrows show the raphe slits open obliquely to the secondary valve side. Proximal raphe endings straight, positioned on the slight widening of raphe-ridge, with short intermissio. Black arrows show the prominent accessory rib, unilaterally widened to the primary valve side. Black arrowhead shows the shallow longitudinal furrow. White arrowhead shows the extended accessory rib. Figs 25, 26: Valve ends. Black arrows show the helictoglossae. White arrow shows the raphe slit open obliquely to the secondary valve side. White arrowheads show the cushion-like thickenings at the ends of accessory rib. Black arrowheads show the apically-elongated openings of apical areolae. Scale bars = 10 μm (Figs 21, 22); 2 μm (Figs 23, 24); 1 μm (Figs 25, 26).
FIGURES 15–20 in Navicula gogorevii-a new, large-celled diatom species from Vietnam (Southeast Asia)
FIGURES 15–20: Navicula gogorevii Chudaev, Glushchenko, Kulikovskiy & Kociolek, sp. nov. SEM. External view. Figs 15, 16: Whole valve. Figs 17, 18: Central area. White arrows show the asymmetrical central pores. Fig. 17. White arrowhead shows the pointed groove ending. Figs 19, 20: Valve ends. Fig. 19. Black arrows show the distinct longitudinal grooves, separated by longitudinal siliceous strips, curved around central area and straight on the rest of the valve. White arrow shows the sickle-shaped terminal fissure, lying mostly on the valve face. Black arrowheads show the pinhole-like openings of apical areolae. Fig. 20. Black arrow shows the separate areolae, located in slit. White arrow shows the sickle-shaped terminal fissure, lying mostly on the valve face. Black arrowhead shows the pinhole-like openings of apical areolae. White arrowhead shows the pointed groove ending. Scale bars = 10 μm (Figs 15, 16); 2 μm (Figs 17, 18); 1 μm (Figs 19, 20).
FIGURES 44–48. Navicula watveae SEM. Figs 44, 45 in Navicula watveae sp. nov. (Bacillariophyceae) a new diatom species from the Western Ghats, India
FIGURES 44–48. Navicula watveae SEM. Figs 44, 45. Internal view of whole valve. Figs 46, 48. Internal view of apices showing internal areolae pattern and distal raphe endings. Fig. 47. Internal view of center valve showing proximal raphe endings. Scale bars=2 µm.
FIGURES 39–43. Navicula watveae SEM. Figs 39–40, 43 in Navicula watveae sp. nov. (Bacillariophyceae) a new diatom species from the Western Ghats, India
FIGURES 39–43. Navicula watveae SEM. Figs 39–40, 43. External view of whole valve showing striae pattern and raphe structure. Figs 40, 42. External view of apices showing the deflection of distal raphe endings. Fig. 41. External view of central valve showing the proximal raphe ending. Scale bars=2 µm.
FIGURES 14–18. SEM, Internal valve views. Fig.14 in Navicula daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China
FIGURES 14–18. SEM, Internal valve views. Fig.14. Internal view of complete valve. Fig. 15, 16. Internal details of the central area. Fig. 17, 18. Valve apices. Scale bars = 10 μm (Fig. 14), 2 μm (Figs 15–18).
FIGURES 7–13. SEM, External valve views. Fig.7 in Navicula daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China
FIGURES 7–13. SEM, External valve views. Fig.7. External view of complete valve. Fig. 8, 9,10. Valve centre exterior. Fig. 11. External view of striae. Fig. 12, 13. External details of the apex. Scale bars = 10 μm (Fig. 7), 2 μm (Figs 8–13)
FIGURES 1–6 in Navicula daochengensis sp. nov., a new freshwater diatom species (Bacillariophyceae) from a small mountain lake, Sichuan Province, China
FIGURES 1–6. LM micrographs of the type population of Navicula daochengensis in Lake Congqiancuo. Scale bar = 10 μm.
FIGURES 24–25 in Eunotia pottieziana, a new diatom (Eunotiaceae, Bacillariophyta) species found in a tropical aquarium
FIGURES 24–25. Eunotia pottieziana Van de Vijver sp. nov. LM images of specimens taken from the holotype sample (BR-4816, tropical freshwater aquarium, Belgium). 24. LM view of several living cells, loosely attached to the substrate. 25. LM view of two Centropyxis tests covered with living Eunotia frustules (arrows). Scale bar =20 µm (Fig. 24) and 50 µm (Fig. 25).
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.