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A morphological and biometrical study of the blood forms of Trypanosoma suis Ochmann, 1905

Published online by Cambridge University Press:  06 April 2009

L. E. Stephen
L. E. Stephen
Affiliation:
Veterinary Section, West African Institute for Trypanosomiasis Research, Vom, Northern Nigeria
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Extract

The status of Trypanosoma suis was held in doubt from the time it was first seen in 1905 until it was re-discovered and carefully studied in the Belgian Congo in 1954.

A description is given of the morphology of single and dividing forms of T. suis as seen in stained thin films made from the blood of infected pigs, and a selection of these is illustrated by line drawings. Briefly this trypanosome is short and stumpy with a free flagellum.

A biometrical study was made on 200 organisms, showing a normal length distribution with a range from 8·5 to 18·5μ, and mean = 14·43μ.

The monomorphism of the trypanosome is verified, and—because of its development in the salivary glands of Glossina—its systematic position as a monomorphic subgroup of the Brucei group is confirmed.

I am much indebted to Dr C. A. Hoare, F.R.S., for the loan of the blood films used in this study and for his interest in the work. I am also grateful to Professor P. C. C. Garnham for providing me with accommodation and equipment at the London School of Hygiene and Tropical Medicine.

Type
Research Article
Information
Parasitology , Volume 53 , Issue 1-2 , May 1963 , pp. 217 - 223
Copyright
Copyright © Cambridge University Press 1963

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References

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