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Ocean Ecosystems/ESRIG, University of Groningen and Arctic Centre, University of Groningen and the RaTS program, British Antarctic Survey.

Ocean Ecosystems/ESRIG, University of Groningen and Arctic Centre, University of Groningen and the RaTS program, British Antarctic Survey.

Ocean Ecosystems/ESRIG, University of Groningen and Arctic Centre, University of Groningen and the RaTS program, British Antarctic Survey.

 

Authority

Ehrenb. (Ehrenberg, 1844b: 200)

Class

Diatomophyceae

Order

Centrales

Family

Chaetoceraceae

Synonyms

Chaetoceros distans Cleve (1873: 9, fig. 11a, b)
Chaetoceros remotus Cleve & Grunow (1880: 120)
Chaetoceros janischianum Castrac. (Castracane, 1886: 77, text fig.)

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Basionym

N/A

Additional References

Hustedt (1927–30: 648, fig. 367), Hendey (1937: 291, pl. 6, figs 9, 10), Manguin (1954: 15), Hustedt (1958: 136), Manguin (1960: 282, pl. 28, figs 330–332), VanLandingham (1968: 718), Evensen & Hasle (1975: 157, figs 1–5), Priddle & Fryxell (1985: 32), Moisan & Fryxell (1993: 493), Andreoli et al. (1995: 472, fig. 8), Hasle & Syvertsen (1997: 196, pl. 39, tab. 47)

Description

Cells chain-forming, often united by parent girdle, narrow in girdle view, isovalvate; pervalvar axis 10–40 µm. Valves elliptical to circular; apical axis 7–50 µm; valve face flat, with a central spine. Apertures between cells large, polygonal. Setae arising well inside the valve margin, running parallel to pervalvar axis for c. 1 cell length, then bending outwards almost perpendicular to chain axis; terminal setae bending towards the chain axis. Chloroplasts numerous, small, spherical or discoid, distributed into the setae.

Distribution

Southern Ocean, south of Australia; Drygalski Glacier, 75°29’S 165°19’E, Ross Sea; Southern Ocean, offshore Wilkes Land, 63°50’S 104°37’E; widespread in Antarctic waters and temperate zones of the South Atlantic (Hustedt, 1958; Hasle & Syvertsen, 1997); Indian Ocean sector of the Antarctic (Kopczyńska et al., 1986); Weddell-Scotia Sea (Garrison et al., 1987); Terre Adélie (Manguin, 1960).

Comments

N/A

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