Salpingoeca marina James-Clark 1867

Aydin, Esra Elif & Lee, Won Je, 2012, Free-living Heterotrophic Flagellates from Intertidal Sediments of Saros Bay, Aegean Sea (Turkey), Acta Protozoologica 51 (2), pp. 119-137 : 133

Salpingoeca marina James-Clark 1867 ( Figs 3l , 4j)

Observation: Loricate choanoflagellate. The cell is about 5 µm long with a pedicel, which is 1.5 times the cell length. The thin lorica is ovoid with a slightly pointed posterior end, which is connected to the pedicel, and has a short neck at the anterior end. The cell fills out the posterior part of the lorica. The thickened flagellum is about 1.5 times the cell length and is surrounded by the pseudopodial tentacles. The lorica attaches to the substrate by the pedicel. One cell observed.

Remarks: Our observation here is assigned to Salpingoeca because it has a single theca but lack silicified costae, is sedentary and does not form colonies. Salpingoeca marina is very similar to S. infusionum , but is distinguished by the presence of a short neck at the anterior part of a lorica ( Kent 1880). As mentioned in Tong (1997c), however, a neck may be seen in S. infusionum after the cells are fixed or when the lorica contains a cyst. These two species can be distinguished by the stiffness of the lorica and because the lorica of S. infusionum is slightly wider anteriorly than that of S. marina . Salpingoeca marina is reported from Antarctica, North Atlantic, subtropical Australia, England, Denmark, Gulf of Finland, France, Germany and USA ( James-Clark 1867; Griessmann 1913; Wailes 1929, 1939; Ruinen 1938; Vørs 1992a, b; Patterson et al. 1993; Tong 1997a, c; Tong et al. 1998).

Figures

Fig. 3. a – Petalomonas marginalis; b – Petalomonas minuta; c – Petalomonas ornata; d – Petalomonas poosilla; e–f – Ploeotia corrugata; e – general appearance of the cell from ventral and (f) dorsal view showing the ridges; g – Sphenomonas angusta; h – Ploeotia vitrea; i – Polyoeca dichotoma; j – Protaspis obliqua; k – Protaspis tegere; l – Salpingoeca marina; m – Pseudophyllomitus granulatus; n–p – ‘Aegoni’, n – postero-lateral view of the cell showing the beak – like structure; o – posterior view of the cell showing the flagellar insertions; p – general view of the cell. Scale bar: 5 μm for all figures.