Vorticella octava 200X (photo Dr. Marina Ettl)
Vorticella octava (photo Dr. Marina Ettl)
Sessile ciliates
- 30 – 60 µm
- single-celled and with muscle, stalk sheath clearly coiled around muscle fibre
- horseshoe-shaped macronucleus, parallel to mouth area
- contractile vacuole under cilia line
In activated sludge:
- in low sludge load
- with good oxygen supply