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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 7548

F. Perez-Paniagua, J. Perez-Silva, and Pierre de Puytorac; [Observation, en Microscopie Electronique, de Certains Stades du developpment de L'infraciliature Buccale, au Cours de la Morphogenese de Division du Cilie Tillina sp.]. Protistologica XV(4):531-539, 1979

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The buccal cavity of Tillina sp. contains two fields of kinetosomes: the left one is constituted by 42-54 parallel kineties; the right one by short anarchic rows of kinetosomes. They both originate in a basal body proliferation from several stomatogenous kineties (18-23). "Doublets" are constituted. Each doublet is a row of successive pairs of kinetosomes. They are not linked by desmoses, as in the pairs of somatic kinetosomes. The anterior kinetosome not always ciliated, is associated with postciliary microtubules more numerous than postciliary microtubules carried by the posterior kinetosome. One can therefore suppose that the anterior kinetosomes are new basal bodies and the posterior kinetosomes are the old somatic kinetosomes. In the left oral primordium, each doublet becomes "triplet" by an addition of a third row to the outside. Postciliary ribbons form at one side of each new basal body. Kinetosomes of the right row in the triplet bear more postciliary fibres than the other kinetosomes. At the end of the morphogenetic movements, some postciliary fibres are resorbed. Well developed postciliary convergent or divergent ribbons are located only at the ends of kineties. At this time, interkinetosome connective system develops and the nemadesma begin to grow.