[Morphological variations of the nuclear apparatus of astome ciliates Almophrya bivacuolata and A. maediovacuolata (protozoa: ciliophora) endocommensal of terricolous oligochaetes in Cameroon]. / Variations morphologiques de l'appareil nucléaire chez les ciliés Astomes Almophrya bivacuolata et A. mediovacuolata (protozoa: ciliophora) endocommensaux d'oligochites terricoles du Cameroun.

The silver impregnation supplemented by DAPI and Feulgen nuclear coloration enabled us to study the morphological variations of the nuclear apparatus of two species of endocommensal Astome ciliates, Almophrya bivacuoloata (de Puytorac & Dragesco, 1968) and A. mediovocuolata (Ngassam, 1983). We highlighted important digitations and the presence of dark bands in the structure of the "H" macronucleus of the small cellular types as well as the presence of intermediate forms between "H" and "X" in these two species.