Petalomonas ornata Skvortzow 1957

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 : 129

Petalomonas ornata Skvortzow 1957 ( Figs 3c , 4l)

Observation: Cell is about 15 μm long and dorso-ventrally flattened. The cell is anteriorly narrow and posteriorly slightly pointed with hyaline margins. The cell has a shallow groove on the ventral side. One emergent flagellum is slightly longer than the cell and emerges from the reservoir in the right side of the cell. The nucleus is in the left side of the cell. The cell moves by gliding with the flagellum directed forwards. One cell found.

Remarks: Generally, our observation is in agreement with the observations of Lee (2006a). Petalomonas ornata differs from P. minuta and P. poosilla because of its general body shape and the shallow groove on the ventral side of the cell. This species was reported from Australia and Fiji ( Larsen and Patterson 1990, Lee 2006a) with the length of 11–15 μm.

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.