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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 4529

Alessandro Valbonesi, Fabio Apone, and Pierangelo Luporini; Morphology and Biology of a New Species of Euplotes, Euplotes plicatum sp. n. (Ciliophora: Euplotidae). Acta Protozoologica 36:287-294, 1997

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Euplotes plicatum sp. n. was isolated from sandy sediment collected from the harbor of Lyttelton (New Zealand South Island). Its main diagnostic trait is a 'pleated" silhouette of the cell dorsal surface generated by 7 (more rarely, 8) prominent and distally bent ridges. Other distinctive traits are: (1) an average size of 50x32 µm; (2) a pattern of 10 frontoventral, 5 transverse, and 4 caudal cirri; (3) 22-25 adoral membranelles; and (4) an argyrome of double type with 10 kineties. A system of multiple mating types, each one specified by one gene expressing serial dominance over its alleles at the apparently single genetic locus mat, controls mating interaction of E. plicatum.