Shackletoniella antarctica (W.West and G.S.West) Strunecký, Raabová, and Bernardova, 2020

Wang, Hye-Ryeung, Song, Ji-Ho, Lee, Nam-Ju, Kim, Do-Hyun & Lee, So-Won Kim and Ok-Min, 2024, Six newly recorded species of epilithic cyanobacteria isolated in Korea, Journal of Species Research 13 (1), pp. 10-31 : 16

Shackletoniella antarctica (W.West and G.S.West) Strunecký, Raabová, and Bernardova, 2020 ( Fig. 6 )

Basionym: Phormidium antarcticum W.West and G.S. West, 1911

Synonym: Leptolyngbya antarctica (W.West and G.S.West) Anagnostidis and Komárek, 1988

Filaments straight or wavy, commonly coiled, occasionally twisted, pale blue green or olive green in color, sometimes false branched in old culture. Sheath colorless, thin, firm, sometimes diffluent, widened. Trichomes not or slightly constricted at the cross-walls. Cells longer than wide or occasionally quadratic, 1.4-3.1 μm long, 1.2-1.7 μm wide. Apical cells rounded, distinct granules at the apex. Hormogonia are formed by necridic cells.

Ecology. This species was isolated from microbial mat in an Antarctic lake ( Strunecký et al., 2020), and in this study from gravel submerged in freshwater.

Distribution. Prydz Bay, East Antarctica ( Strunecký et al., 2020).

Site of collection. Site 7.

Specimen locality: ACKU671, 672.

Figures

Fig. 6. Microscopic photographs of Shackletoniella antarctica from the strain ACKU671. (A) Arrangement of filament, (B) False branching (fb), (C) Trichomes twisted into a rope, (D) Morphology of trichome, (E, F) Sheaths (sh), (G, H) Apical cell of trichomes. Scale bars=(A) 50μm, (B-H) 10μm.