in vivo on cyclopoid copepod

Description:

Portrait of the peritrich ciliate, Cyclodonta bipartita (Stokes, 1885) Matthes, 1958. Usually found as an epibiont of freshwater copepods. The cells are contained in a vase-shaped transparent lorica that has fine longitudinal striations. The lorica has a short, stout noncontractile stalk. The cell is attached to the posterior portion of the lorica by a series of membranes and does not protrude from the lorica. The cell body is cylindrical in cross section, rounded posteriorly and transversely truncate anteriorly. The cell surface has fine transverse striations. The macronucleus is ellipsoid. There is a single contractile vacuole. Found on the surface of a cyclopoid copepod collected from a freshwater pond near Boise, Idaho March 2005. DIC