Goniomonas amphinema Larsen and Patterson 1990

Lee, Won Je, 2015, Small Free-Living Heterotrophic Flagellates from Marine Sediments of Gippsland Basin, South-Eastern Australia, Acta Protozoologica 54 (1), pp. 53-76 : 54

Goniomonas amphinema Larsen and Patterson 1990 ( Fig. 2b )

Observation: Cells are almost triangular in shape and 3 to 4.5 µm long. Pellicle stripes and anterior row of ejectisomes may be not seen. Two flagella of unequal length insert in an anterior lateral pocket; one directed anteriorly, the other one posteriorly. Commonly observed.

Remarks: This species is one of the most widely reported taxa from diverse sites worldwide ( Patterson and Lee 2000). Goniomonas amphinema has been distinguished from G. pacifica Larsen and Patterson, 1990 by having two flagella of unequal length and by the flagellar orientation according to previous observers. Recently one more species ( Goniomonas avonlea ) was reported from marine sandy sediment by Kim and Archibald (2013). Goniomonas avonlea is different from G. amphinema in having two subequal flagella and a larger cell body ( Kim and Archibald 2013).

Figures

Fig. 2. a – Chilomastix cuspidata, showing general appearance of cell; b – Goniomonas amphinema, showing general appearance of cell; c – G. pacifica, note two flagella diverging; d – Percolomonas similis, note ventral groove; e – Bodo platyrhynchus; f – Neobodo curvifilus; g – N. saliens; h–i – Hemistasia phaeocysticola, note a papillum (arrow); j – Bordnamonas tropicana, showing general appearance and mouth (arrow); k – Rhynchomonas nasuta; l–o – Rhynchobodo simius; l – tubular ingestion organelle (arrow); m, o – showing groove; n – general appearance of cell; p–q – Rhynchopus amitus; r–s – Spironema multiciliatum; t – Amastigomonas debruynei, general appearance of cell; u – Amastigomonas mutabilis, note anterior flagellum projecting from sleeve and recurrent flagellum; v – Apusomonas sp.; w – Psammosa unguis nov. comb., general appearance of cell; x–y – Mantamonas plastica; x – note anterior flagellum (arrow) and y – ventral depression.All micrographs are DIC images. Scale bar: 5 µm for all figures.