Ref ID : 7618
Klaus Eisler and Christian F. Bardele; Cortical Morphology and Morphogenesis of the Nassulid Ciliates Furgasonia blochmanni Faure-Fremiet, 1967 and Nassula citrea Kahl, 1930. Protistologica XXII(4):461-476, 1986
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Description of the morphology of the trophic cell and the process of morphogenesis are given Furgasonia blochmanni and Nassula citrea based upon light microscopy of living and silver-stained cells. It was observed that in both species the paroral membrane of the opisthe shows an ontogenetic relationship to the parental paroral membrane, whereas the adoral membranelles originate within somatic kineties left of the ventral mid-line. This stomatogenetic pattern which is characterized by a buccal origin of the paroral membrane combined with a somatic origin of the adoral membranelles seems to be typical for the Nassulina. It is important to note that in Nassula citrea in contrast to Furgasonia blochmanni the ontogenetic relationship between the old paroral membrane and the paroral membrane of the opisthe only becomes apparent if 2 subsequent division cycles are examined. The differences and similarities in stomatogenesis within the Nassulina and possible connections to the stomatogenetic patterns of the Microthoracina and other ciliate groups are discussed.