•  
  •  
 

Document Type

Research

Abstract

The growth and morphology of a caecal porcine trichomonad (probably Tritrichomonas rotunda) were studied from both the trichomonad's natural environment, the pig's caecum, and in culture. Growth of the organism was studied in C.P.L.M. medium at 37° C. After an initial inoculum of 100 organisms per ml. the population rose to 2,900,000 per ml. on day 4 and then decreased to near extinction on day 7. In comparison to the organisms on stained smears made directly from the pig's caecum, the organisms after extensive subculturing (100 subcultures over a period of 20 months) were more elongate and often almost tubular; possessed longer undulating membranes and costas approaching full body length instead of only ½ -1/3 body length; had axostyles with a more bulbous capitulum; and had club-shaped parabasal bodies instead of V-shaped structures. No significant variations were found in the morphology of the trichomonads during the various days of the culture cycle. Because of these morphological changes during extended subculturing, the interpretation of the morphological structures based upon trichomonads after extended periods of subculturing must be viewed with caution.

Publication Date

1968

Journal Title

Proceedings of the Iowa Academy of Science

Volume

75

Issue

1

First Page

390

Last Page

396

Copyright

© Copyright 1968 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

Share

COinS
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.