Ploeotia vitrea Dujardin 1841

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 : 132

Ploeotia vitrea Dujardin 1841 ( Figs 3h , 4o)

Observation: Cell is oval, about 20 μm long, and slightly flattened, with a well developed hook-shaped ingestion organelle. The anterior part of the cell is slightly blunt and the posterior part of the cell is point- ed. This species has 10 longitudinal raised double ridges; 4 dorsally, 2 laterally, 4 ventrally. The ridges may be well developed and two mid-ventral ridges are close to each other. The anterior flagellum is about 0.7 times the cell length and beats freely from side to side, and the posterior flagellum is thick and twice the cell length. The nucleus is located in the right side of the cell and the reservoir is in the left side. Description based on record of one cell.

Remarks: The observation is in agreement with the Larsen and Patterson (1990). This species can be easily distinguished from other Ploeotia species by its ten raised double ridges. Ploeotia vitrea is a senior synonym of Anisonema vitrea (Dujardin 1841) Calkins 1901 . It was reported from marine sites in Australia, Brazil, Fiji, Hawaii, Korea and USA, and the previously reported length range was 16–40 μm ( Calkins 1901; Farmer and Triemer 1988; Larsen and Patterson 1990; Patterson and Simpson 1996; Lee and Patterson 2000; Al-Qassab et al. 2002; Lee 2002b, 2006a, 2008).

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.