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The structure of the intestine of Nematodirus battus and changes during the course of aninfection in lambs

Published online by Cambridge University Press:  06 April 2009

D. L. Lee  and
Jean Martin
D. L. Lee
Affiliation:
Department of Pure and Applied Zoology, University of Leeds, Leeds LS2 9JT
Jean Martin
Affiliation:
Department of Pure and Applied Zoology, University of Leeds, Leeds LS2 9JT
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Summary

The structure of the intestine of adult Nematodirus battus is described. It is similar tothe intestine of some other trichostrongyles but with a few minor differences. Changes in the structure of the intestinal cells are described in N. battus taken from lambs during the later stages of an infection (days 20 to 32) with 60000 infected larvae. The mostnoticeable changes were a decrease in the amounts of glycogen and smooth endoplasmic reticulum, a reduction in the numbers of secretory-type granules and the appearance of vacuoles within the cells. Some of these vacuoles contained small crystals, and crystals, some of them large, were also found in the intestinal lumen. These changes, with the exception of the appearance of the crystals, are similar to changes described for Nippostrongylus brasiliensis affected by the immune response of the rat host, and it is concluded that the changes in N. battus could have been initiated by an immune response to this nematode in the lamb. Lambs given 2000 larvae of N. battus do not reject the nematodes in 32 days, and no changes were observed in the structure of these nematodes.

Type
Research Article
Information
Parasitology , Volume 81 , Issue 1 , August 1980 , pp. 27 - 33
Copyright
Copyright © Cambridge University Press 1980

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References

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