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Polymorphism and Ultrastructure of a Colpodean Ciliate of the Genus Platyophryides Foissner, 1987
Author(s) -
PUYTORAC PIERRE,
KATTAR M. RAGEL,
GROLIERE C. ALAIN,
NETO INACIO DA SILVA
Publication year - 1992
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1992.tb01295.x
Subject(s) - ciliate , macronucleus , biology , ultrastructure , ciliata , tetrahymena , protozoa , zoology , predation , genus , botany , ecology , genetics
. A ciliate isolated from a pond in Brazil, transformed to a giant form when its food was shifted from a bacterial prey to a ciliate prey. This polymorphism is immediately reversible when the prey ciliates, either Tetrahymena or Colpidium , disappear from the culture medium. By its life cycle, morphology, and ultrastructure, this ciliate belongs to the Class Colpodea. it could belong to the genus Platyophryides Foissner, 1987, except that its micronucleus is not enveloped by the macronuclear membrane. The systematic position of the genus Platyophryides , the validity of the three species in this genus, and the characteristics of the Cyrtolophosidida are discussed.