The Morphology of Trichomonas ovis from the Cecum of Domestic Sheep
- 1 August 1962
- journal article
- research article
- Published by JSTOR in Journal of Parasitology
- Vol. 48 (4), 589-+
- https://doi.org/10.2307/3274917
Abstract
Trichomonas ovis (Robertson, 1932) Morgan, 1946 was found in the ceca of 12 out of 16 domestic sheep in Illinois and Utah and was cultivated readily at 37 C in Diamond''s medium, CPLM medium and bovine cecal extract medium. It was studied by phase-contrast microscopy and after fixation with osmium tetroxide or Bouin''s or Hollande''s fixatives and staining with Giemsa, Heidenhain''s iron hematoxylin, or silver impregnation. It was piriform, 6 to 9 by 4 to 8 [mu] with a mean of 7 by 6 [mu], with an anterior nucleus, with a prominent pelta at the anterior end, with a slender, hyaline axostyle which protruded a mean of 5 [mu] beyond the body and gradually tapered to a point, without a chromatic ring at the point of exit of the axostyle, with 4 anterior flagella of unequal length averaging 14, 11, 9, and 7 [mu], respectively, with a prominent undulating membrane which extended from three-fourths to the full length of the body and usually had two of three undulations, with a posterior, free flagellum extending beyond the undulating membrane, with aprominent costa and several irregular rows of paracostal granules, with an avoid or club-shaped parabasal body averaging 2 by 1 [mu] and containing an intensely chromophilic body, and with a parabasal filament. This is the only species of enteric trichomonas of sheep or cattle which has been described in detail following study by modern techniques.Keywords
This publication has 3 references indexed in Scilit:
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