Home|Search|Identify|Taxonomic tree|Quiz|About this site|Feedback
Developed by ETI BioInformatics
Characteristics, distribution and ecology
Taxonomische classification
Synonyms and common names
Literature references
Images, audio and video
Links to other Web sites

Cohn, 1866

Body ellipsoidal, highly flexible, slightly contractile. Two macronuclei, 2-3 micronuclei. Contractile vacuole near mid-body on left. Frontoventral cirri conspicuously shifted backwards, some behind level of cytostome. Three frontal, 3 frontoventral, 1 buccal, 3 postoral ventral, 2 pretransverse and 4-6 transverse cirri. Right marginal cirral row in posterior half of cell, composed of 3-9 cirri, not confluent with left marginal cirral row. Dorsal kineties 5-6 in number, with about 10 µm long cilia and 3 fine caudal cirri. Adoral zone of membranelles extending over about 20% of body length, composed of 13-18 membranelles of which first 5 appear spine-like, stiff. Movement jumping, rests in between. Size 50-100 x 30-40 µm. The species was recently transferred to Oxytricha (Song et al., 1991), which is not followed here since its morphogenesis, an essential feature for a generic classification in oxytrichids (Berger and Foissner, 1997), is not known and its dorsal ciliary pattern is rather peculiar.

Ref.: Kahl (1932), Dragesco (1963), Song et al. (1991).

Actinotricha saltans