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

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 begi...

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Bibliographic Details
Published in:Parasitology 1982-04, Vol.84 (2), p.283-287
Main Authors: Erasmus, D. A., Popiel, I., Shaw, J. R.
Format: Article
Language:English
Subjects:
animal development
Animals
Cell Differentiation
Cytology, Trematoda
Cytoplasmic Granules - ultrastructure
Egg Yolk
Endoplasmic Reticulum - ultrastructure
Exocrine Glands - cytology
Female
Golgi Apparatus - ultrastructure
Mitochondria - ultrastructure
Morphology, Trematoda
Protein Biosynthesis
Reproductive organs, Trematoda
Ribosomes - ultrastructure
Schistosoma - cytology
Schistosoma haematobium
Schistosoma haematobium - cytology
Schistosoma japonicum
Schistosoma japonicum - cytology
Schistosoma mansoni
Schistosoma mansoni - cytology
Schistosoma mattheei
Trematoda
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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.
ISSN:0031-1820
1469-8161
DOI:10.1017/S0031182000044838