Fig. 1.

The life cycle of Bromeliothrix metopoides: (A) with its various stages after Lugol's fixation; (B) microstome theront; (C) macrostome division chain; (D) resting cysts of theronts (large and light brown) and the flagellate Polytomella sp. (small and dark brown); (E) trophont; (F) young macrostome with few food vacuoles; (G) mature macrostome packed with food vacuoles containing Polytomella sp. Scale bars: 30 μm (B, E, F), 40 μm (C, G), and 20 μm (D). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of the article.)

Fig. 1A reproduced from Foissner (2010).