Oral infraciliature; left lateral view

Description:

Oral infraciliature ( left lateral view) of Halteria grandinella (Mueller,1773) Dujardin, 1841.There is an inconspicuous undulating membrane to the right of the buccal cavity (light blue arrowhead). The adoral membranelles (AZM) are separated into approximately 5 to10 inner (buccal) membranelles (pink arrowhead) and a collar of 16 outer membranelles, each composed of two longer kineties and one shorter kinety (green arrowheads). The AZM is of the "open" type.These run clockwise to the cytostome unlike the peritrich ciliates in which the adoral ciliary spiral runs counterclockwise to the cytostome. Stained by the silver carbonate technique (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.