Bresslauides
Class Colpodea Small & Lynn, 1981: Order Colpodida: Family Hausmanniellidae Foissner, 1987 (ref. ID; 4828)
- Bresslauides australis Blatterer & Foissner, 1988 (ref. ID; 4828)
- Bresslauides discoideus (ref. ID; 7118)
- Bresslauides terricola (Foissner, 1987) Foissner, 1993 (ref. ID; 4861)
Descriptions
Trophonts of Bresslauides australis are broadly reniform in lateral view. In ventral view, starved cells have a thin oval shape, while well-fed cells are ellipsoid and taper towards anterior. The length of the trophonts varies between 105 and 175 um (average=136 um, n=10, determined by light microscopy), depending on the age of the cells and on their state of nutrition. The large vestibulum takes up the anterior third to half of the cell. In lateral view the vestibular margins are concave with an auriform curve of the right vestibular margin. The left vestibular wall forms a marked bend of up to 90 degrees with the postoral portion of the cell in lateral view. The inner vestibular wall is covered with the cilia of vestibular kineties. On the left side of the cell the pore of the contractile vacuole is situated slightly anterior to the posterior cell pole. A somatic groove extends from the vestibular opening to the pore of the contractile vacuole. The entire cell surface is covered with cilia organized in dikinetids. Anterior to the vestibular opening and in the somatic groove the ciliature is especially dense. The right and left oral polykinetids of B. australis are situated deep in the vestibulum and thus cannot be seen by conventional scanning electron microscopy. Ultrastructure. (ref. ID; 4828)