Stylonychia ammermanni* sp. n., a New Oxytrichid (Ciliophora ...

80 R. Gupta et al.
Fig. 5. Photomicrographs of protargol impregnated cells of S. ammermanni sp. n. showing division morphogenesis on the ventral
surface. A - linear proliferation of oral primordium (arrow) close to uppermost transverse cirrus T 1
(double arrow). B - anteriad movement of
kinetosomes (arrow) from oral primordium and disaggregation of right postoral ventral cirrus V 2
(double arrow). C - anteriad movement of
kinetosomes (arrow) from V 2
. Origin of primordia: II of proter from OP (double arrow); III of proter from F 8
(arrow head) D - origin of
primordia: IV of proter from F 7
(double arrow); V and VI of proter from V 2
(double arrow); I-III of opisthe from OP (arrow head); IV-VI of
opisthe from V 2
. E - differentiation pattern of 1, 3, 3, 3, 4, 4. Within row formation of left (arrows) and right (arrow heads) marginal primordia.
Dorsomarginal primordia (double arrows) formed near right marginal primordia. F - cell in cytokinesis. Scale bar - 35 µm
dorsal surface during cytokinesis. Caudal cirri are formed
by proliferation of kinetosomes at the posterior ends of
the new DK 1, 2, 4
in each daughter cell.
Type species are deposited at the Biology Centre of
the Upper Austrian Museum no. 2000/155 in the collection
of “Evertebrate varia.”
DISCUSSION
Diagnosis of Stylonychia ammermanni sp. n.
Member of the Stylonychia mytilus-lemnae complex
lacking peristomial bulge. Size in protargol preparations
about 135 x 50 µm with parallel borders and rounded