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Fine structural aspects of an embryo-adapted strain of Eimeria tenella in the epithelial cells of the chorio-allantoic membrane

Published online by Cambridge University Press:  06 April 2009

I. G. Lücht ,
B. J. Millard  and
E. G. Scholtyseck
I. G. Lücht
Affiliation:
Zoologisches Institut der Universität Bonn Poppelsdorfer Schloss, D–5300 Bonn 1, F.R.G.
B. J. Millard
Affiliation:
Houghton Poultry Research Station, Houghton, Huntingdon, Cambs. PE17 2DA
E. G. Scholtyseck
Affiliation:
Zoologisches Institut der Universität Bonn Poppelsdorfer Schloss, D–5300 Bonn 1, F.R.G.
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Summary

The fine structure and development of the endogenous stages of an embryo-adapted strain of Eimeria tenella in chicken embryos is described. First-generation merozoites were formed by endodyogeny in uninucleate developmental stages as well as schizogony and the endoplasmic reticulum of merozoites of the second-generation schizonts appeared as a circular structure, often enclosing other organelles. In contrast to the parent strain, development of the second-generation schizonts was restricted to cells of epithelial origin. These observations confirm that the complete endogenous cycle of the embryo-adapted strain of E. tenella is restricted to epithelial cells of the chorio-allantoic membrane (CAM) and that no major ultrastructural changes have occurred as a result of repeated embryo passage.

Type
Research Article
Information
Parasitology , Volume 76 , Issue 2 , April 1978 , pp. 185 - 191
Copyright
Copyright © Cambridge University Press 1978

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