Goniomonas amphinema Larsen et Patterson 1990

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 : 126

Goniomonas amphinema Larsen et Patterson 1990

( Figs 1l , 2k )

Observations: Cells are 5–5.5 μm long, oblong and laterally flattened. Two flagella insert in an anterior lateral pocket; one directed anteriorly, one posteriorly. The cells have three delicate longitudinal ridges on both sides, which can be easily overlooked. The anterior row of ejectisomes is sometimes difficult to observe. Description based on the observations of two cells.

Remarks: The genus Goniomonas contains three species, G. amphinema , G. pacifica and G. truncatum . Goniomonas amphinema differs from G. pacifica and G. truncatum in having dissimilar flagella one of which curves to lie along the ventral side of the cell. This species was reported from marine sites in Australia, North Atlantic, Denmark, England, Fiji, Gulf of Finland, Panama and Korea and was reported to be 4 to 9 μm ( Vørs 1992a, b; Larsen and Pattersen 1990; Patterson et al. 1993; Tong et al. 1998; Lee and Patterson 2000; Lee 2001, 2002, 2006b; Al-Qassab et al. 2002).

Figures

Fig. 1. a – Actinomonas mirabilis/Pteridomonas danica; b – Amastigomonas mutabilis; c – Ancyromonas micra; d – Bicosoeca conica; e – Bordnamonas tropicana; f – Caecitellus parvulus; g – Cafeteria minuta; h – Cafeteria roenbergensis; i – Cyranomonas australis; j – Developayella elegans; k – Discocelis saleuta; l – Goniomonas amphinema; m – Goniomonas pasifica; n – Kiitoksia ystava; o – Dinema platysomum; p – Anisonema acinus; q – Heteronema exaratum; r – Heteronema ovale; s – Kathablepharis remigera; t – Notosolenus canellatus; u – Massisteria marina; v – Metromonas grandis; w – Neobodo designis; x – Neobodo saliens; y – Percolomonas similis. Scale bar: 10 μm for all figures.

Fig. 2. a – Actinomonas mirabilis/Pteridomonas danica; b – Amastigomonas mutabilis; c – Ancyromonas micra; d – Bicosoeca conica; e – Caecitellus parvulus, note the mouth on the left-hand side; f – Bordnamonas tropicana; g – Cafeteria roenbergensis; h – Cyranomonas australis; i – Developayella elegans; j – Discocelis saleuta; k – Goniomonas amphinema; l – Cafeteria minuta, feeding cell; m – Anisonema acinus, dorsal view, note the ingestion organelle; n – Dinema platysomum, ventral view showing surface striations; o – Goniomonas pacifica; p – Heteronema exaratum, ventral view, general appearance of cell; q – Kathablepharis remigera; r – Massisteria marina; s – Neobodo saliens; t – Neobodo designis; u–v – Heteronema ovale, same cell; u – general appearance; v – extended cell. All micrographs are DIC images. Scale bar: 5 μm for all figures.