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LM image scalebar = 10 µm = 72 pixels
Observations
| Observations: | Sarah Spaulding and Rhea Esposito |
|---|---|
| Length: | 9-12 µm (2 mantle hight) |
| Width: | 4-6 µm (diameter ) |
| Striae: |
Description:
Frustules are most often observed in girdle view. Frustules consist of 2 hemispherical valves, joined by linking spines. Striae are visible.
| Morphology: | Centric |
|---|---|
| Distribution: | Antarctic endemic |
Autecology:
Notes:
This taxon occurs rarely in the Dry Valleys. It is distinct from other forms of marine Melosira and freshwater Aulacoseira. The species is not known to form filaments of frustules linked together, as in many members of those two genera. Rather, M. charcotti is composed of two hemispherical valves. The similarity to the initial valves that follow an auxospore in Melosira and Aulacoseira suggests that this diatom retains one portion of the lifecycle (the initial valves) as its prediminant form. The species has also been reported on melt pools on the surface of sea ice in McMurdo Sound.
McMurdo Dry Valleys Waterbodies with Melosira charcotii
- Bowles Creek
- Canada Stream
Original Type Description
| Author: | Peragallo, M. 1921 |
|---|---|
| Length: | |
| Width: | 9-10 µm diameter |
| Striae: |
Original Description:
Frustules spheriques reunis deux par deux par un connectif, formant une chaine flexible, les surfaces spheriques exterieures se touchant ou reunies entre elles par court filament. Pas de structure visible. Diameter 9-10 µm. Habitat: Iles Argentines, ile Petermann.
New combination
| Author: |
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Citations
Index Nominum Algarum (INA):
- Original
- If an INA link is available, it will be shown above
- The INA is a bibliographic reference "card file" for algal taxonomy, containing nearly 200,000 names of algae (in the broad sense).
Publications (by year):
- Peragallo 1921. Deux. Exped. Antarct. Franc. (1980-1910). pg. 86, pl. 4: fig. 14. [citation 94(77)]
