-
O. sinensis is closely related to O. mobiliensis and O. regia but the processes are nearly parallel to the cell axis and the processes are close to the processes. The valve face between the processes is flat or concave.
-
-
Phasde contrast micrograph of living diatom - cracked.
-
Ditylum (die-tie-lum) brightwellii. Marine centric diatom, cylindrical frustule from the ends of which is a long spine or labiate process. This contains two products of cell division, and each cell has numerous golden chloroplasts. Differential interference microscopy.
data on this strain.
-
Chain forming diatom, which produces wing like extensions one valve end, which link adjacent cells. This is a cosmopolitan species.
-
Image shows chloroplasts, small sparkling droplets of storage matter, and the fine connection tubes between the cells. Scale bar indicates 100 µm. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
-
Biddulphia pulchella.
-
Biddulphia ?. A triangular version? Collected by ATOL special protist hunters 1st ocean taw in Woods Hole during the Protistology Workshop at MBL, October-November 2005. Isolation and art by Adrian Reyes-Prieto.
-
Ditylum (die-tie-lum) brightwellii. Marine centric diatom, cylindrical frustule from the ends of which is a long spine or labiate process. Many small plastids and central nucleus. Differential interference microscopy.
data on this strain.
-
Odontella (owe-don-tell-a) mobiliensis, a centric diatom. The frustule or shell is formed of two valves joined by girdle bands. Many small peripheral chloroplasts and a central nucleus. Differential interference microscopy.
data on this strain.
-
Image shows chloroplasts, small sparkling droplets of storage polysaccharide chrysolaminarin used as carbohydrate food reserve, and the fine connection tubes between the cells. The image was built up using several photomicrographic frames with manual stacking technique. Scale bar indicates 50 µm. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
-
Biddulphia sp? (Triangular guy). Collected by ATOL special protist hunters 1st ocean taw. Woods Hole Massachusetts for the Protistology Workshop at MBL. October-November 2005. Isolation and art by Adrian Reyes-Prieto, SEM by Charles O'Kelly and Shauna Murray.
-
Eucampia (you-camp-ee-a) zoodiacus is a filament forming diatom (stramenochrome). Adjacent cells are attached by two interlocking apical elevations. Differential interference microscopy.
data on this strain.
-
Odontella (owe-don-tell-a) mobiliensis, a centric diatom. The frustule or shell is formed of two valves joined by girdle bands. With horns (spines) emerging from the apical margins of the valves and more spines (referred to as apical processes) arising closer to the centre of the valves. Many small peripheral chloroplasts and a central nucleus. Two daughter cells located within frustule of parental cell. Differential interference microscopy.
data on this strain.
-
After several minutes of observation chloroplasts are transported to the cell center, maybe to save the nucleus and most of the chloroplasts against harmful amounts of UV radiation. The image was built up using several photomicrographic frames with manual stacking technique. Scale bar indicates 50 µm. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
-
Biddulphia sp? (Triangular guy). Collected by ATOL special protist hunters 1st ocean taw. Woods Hole Massachusetts for the Protistology Workshop at MBL. October-November 2005. Isolation and art by Adrian Reyes-Prieto, SEM by Charles O'Kelly and Shauna Murray.
-
Eucampia (you-camp-ee-a) zoodiacus is a filament forming centric diatom (stramenochrome). Adjacent cells are attached by two interlocking apical elevations. Detail showing peripheral disc-shaped plastids and central nucleus. Differential interference microscopy.
data on this strain.
-
Cells are single or united into short chains by the long spines extending from the elevated central part of the valve face. The processes are slender and point diagonally outward. This species can be confused with O. regia.
-
Image shows chloroplasts and nuclei. The image was built up using several photomicrographic frames with manual stacking technique. Scale bar indicates 50 µm. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
-
Trigonium (try-go-knee-um) or Hydrocera (high-dro-see-ra) is a marine diatom. It is a centric diatom in which a three pointed asymmetry has been imposed. Test only. Differential interference contrast,
-
Triceratium moronense.
-
Scale bar indicates 10 µm. Sample from North Sea near Heligoland (spring diatom bloom). Use of SEM equipment courtesy of Lab Dr. Karl-Heinz Schäffner, Solingen, Germany.
-
Image shows chloroplasts and nuclei. The image was built up using several photomicrographic frames with manual stacking technique. Scale bar indicates 50 µm. The image was built up using several photomicrographic frames with manual stacking technique. Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
-
Triceratium pentacrinus.