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Experimental concurrent infections with Strongyloides ratti and S. venezuelensis in laboratory rats

Published online by Cambridge University Press:  06 April 2009

Guta Wertheim
Guta Wertheim
Affiliation:
Department of Parasitology, The Hebrew University—Hadassah Medical School, Jerusalem, Israel
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Extract

The distribution of S. ratti and S. venezuelensis in the intestine of albino rats was studied in experiments with single species infections and in mixed infections.

The majority of S. ratti were found in the anterior 20 cm of the intestine and in decreasing numbers in the remaining 60 cm. The larvae of S. ratti settled in the Lieberkühn crypts where they matured and laid eggs in convoluted tubes.

The parasitic females of S. venezuelensis were concentrated in the anterior 15 cm of the intestine, with over 50 % in the anterior 5 cm, and a few worms 20–25 cm posterior to the pylorus. The larvae settled in the villi, close to the surface of the mucosa. The straight egg strands were laid on this site.

It was concluded that, although occurring together, the two species can coexist in the intestine without interfering with each other.

Type
Research Article
Information
Parasitology , Volume 61 , Issue 3 , December 1970 , pp. 389 - 395
Copyright
Copyright © Cambridge University Press 1970

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