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A comparative study of the vitelline cell in Schistosoma mansoni, S. haematobium, S. japonicum and S. mattheei

Published online by Cambridge University Press:  06 April 2009

D. A. Erasmus ,
I. Popiel  and
J. R. Shaw
D. A. Erasmus
Affiliation:
Department of Zoology, University College, Cardiff, Wales
I. Popiel
Affiliation:
South African Institute of Medical Research, Hospital Street, Johannesburg, South Africa
J. R. Shaw
Affiliation:
Pfizer Research, Sandwich, Kent
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Summary

A comparison is given of the ultrastructure of the vitelline cell in Schistosoma mansoni, S. haematobium, S. japonicum and S. mattheei. Four stages in development of the vitelline cell have been categorized as follows: Stage 1, the undifferentiated cell; Stage 2, the developing cell showing the beginning of synthetic activity; Stage 3, the developing cell showing active protein synthesis; Stage 4, the fully mature vitelline cell. These stages in development have been defined morphologically and Stages 1, 2 and 3 are very similar in all 4 species. Lipid is present in the Stage 4 cells of all species but appears earlier at Stage 3 in S. haematobium and S. mattheei. There are several differences as to the intercellular inclusions of the Stage 4 cells, the most marked of these being the absence of calcareous corpuscles from S. japonicum as compared with the other 3 species.

Type
Research Article
Information
Parasitology , Volume 84 , Issue 2 , April 1982 , pp. 283 - 287
Copyright
Copyright © Cambridge University Press 1982

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