Bacillaria
| Bacillaria | |
|---|---|
| File:Bacillaria paxillifera.jpg | |
| Bacillaria paxillifer | |
| Scientific classification Edit this classification | |
| Domain: | Eukaryota |
| Clade: | Sar |
| Clade: | Stramenopiles |
| Division: | Ochrophyta |
| Clade: | Diatomeae |
| Class: | Bacillariophyceae |
| Order: | Bacillariales |
| Family: | Bacillariaceae |
| Genus: | Bacillaria J.F. Gmelin (1791) |
Bacillaria is a diatom genus in the family Bacillariaceae.[1][2][3]
| External videos | |
|---|---|
| video icon Bacillaria: Distractingly Beautiful Crystal Colonies – Journey to the Microcosmos: |
Species
[edit | edit source]- Bacillaria paradoxa Gmelin 1788
- Bacillaria paxillifer (O.F. Müller) Hendey (1951)
Lifecycle
[edit | edit source]This genus is photosynthetic, and reproduces sexually and asexually.
Description
[edit | edit source]Cells are elongated and motile, sliding along each other, in stacked colonies. Cells are rectangular in girdle view (when in colonies), and lanceolate in valve view. Raphe system is slightly keeled and runs from pole to pole. Two large plate-like chloroplasts are present, one near each end of the cell. The nucleus is located centrally. Cells are yellow-brown in colour. Fibulae are strong, and the valve surface is covered in transverse parallel structures called striae.
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Video of several diatoms of the genus Bacillaria moving, in real time
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Bacillaria paxillifer
Space station
[edit | edit source]Three diatom species were sent to the International Space Station, together with the huge (6 mm length) diatoms of Antarctica and the exclusive colonial diatom, Bacillaria paradoxa. The cells of Bacillaria moved next to each other in partial but opposite synchrony by a microfluidics method.[4]
Measurements
[edit | edit source]Length (apical axis[5]): 70 - 200 μm
Width (trans-apical axis):[6] 5 - 8 μm
Height (Pervalvar axis):[7] 5 - 10 μm
Fibulae: 7 - 9 in 10 μm
Striae: 20 - 21 in 10 μm
Habitat
[edit | edit source]Benthic zone, marine and brackish/freshwater species, but is also commonly found in plankton.
References
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- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Phytoplankton Encyclopedia Project
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