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Fine Structure of Trichomitus batrachorum (Perty) *
Author(s) -
HONIGBERG B. M.,
DANIEL WENDELL A.,
MATTERN CARL F. T.
Publication year - 1972
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.1550-7408.1972.tb03499.x
Subject(s) - lamella (surface anatomy) , flagellate , flagellum , organelle , biology , anatomy , microbiology and biotechnology , paleontology , bacteria
SYNOPSIS.Trichomitus batrachorum (Perty) shares with Trichomonadinae most of its fine‐structural characteristics, especially those pertaining to the undulating membrane that consists of a high body fold, enclosing the loop‐shaped, periodic marginal lamella, and of the recurrent flagellum applied to the fold. This flagellate has also certain structures, i.e. the costal base, comb‐like organelle, and well developed marginal lamella, in common with Monocercomonas. It shares with Hypotrichomonas the costal base; large pelta; very fine fibers perpendicular to, and connecting the axostylar microtubules; structural details of the most proximal segment of the marginal lamella; and general relationships between dorsal body fold (poorly developed in Hypotrichomonas ) and the recurrent flagellum. All these electronmicroscopic findings support the crucial position of Trichomitus in the evolutionary sequence Monocercomonas → Hypotrichomonas → Trichomitus → Trichomonadinae suggested previously by lightmicroscopic observations. Further, Trichomitus shares with all Tritrichomonadinae the comb‐like structure, not found either in Hypotrichomonas or Trichomonadinae; and it has in common with Tritrichomonas also the costa with Type A periodicity, being the only member of Trichomonadinae with this type of supporting organelle. It appears, therefore, that Trichomitus ‐type organisms represent an important link in the evolution of all Trichomonadidae from Monocercomonadidae.