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A Morphological Description of a Tritrichomonas from the Nasal Cavity of Swine *
Author(s) -
Buttrey Benton W.
Publication year - 1956
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.1550-7408.1956.tb02423.x
Subject(s) - biology , anatomy , nasal cavity , tritrichomonas foetus , flagellum , cecum , trichomonas , fetus , microbiology and biotechnology , bacteria , ecology , pregnancy , genetics , trichomonas vaginalis
SUMMARY. The trichomonad occurring in the nasal cavity of the domestic pig, Sus scrofa , is described and figured. With Heidenhain's iron‐hematoxylin and protargol (protein‐silver) stains, the specific characters are as follows: Pyriform in shape; length 8.8–18.4 μ (average 13.6 μ); width 3.2–8.0 μ (average 4.8 μ); blepharoplast of several granules; three anterior flagella with the longest 10.4–16.8 μ in length ending in knob‐like enlargements; full length undulating membrane with four to six subequal folds and containing marginal and accessory filaments; trailing flagellum 4.8–11.2 μ in length; full length costa with fine subcostal granules; hyaline rod‐shaped axostyle with bulbous capitulum, chromatic ring and conical tip; tube‐like parabasal body 3.2–4.8 μ in length; oval‐shaped nucleus 3.7–5.0 μ in length and 2.2–3.0 μ in width; cytostome; and vacuolated cytoplasm containing food vacuoles. Taxonomy of trichomonads in the respiratory and digestive systems of swine is discussed and the nasal trichomonad is compared with the two different forms of Trichomonas found in the cecum. The conclusion is that the nasal form is of a different species from the trichomonads of the cecum. The close similarity between the nasal form and Tritrichomonas foetus is emphasized. The writer suggests that the nasal form should not be given recognition as a new species until its true relationship with T. foetus is revealed.