Hostname: page-component-848d4c4894-v5vhk Total loading time: 0 Render date: 2024-06-29T16:00:09.662Z Has data issue: false hasContentIssue false

A Comparison of Two Geographical Strains of Schistosoma haematobium

Published online by Cambridge University Press:  05 June 2009

G. Webbe
Affiliation:
Department of Medical Helminthology, London School of Hygiene and Tropical Medicine
C. James
Affiliation:
Department of Medical Helminthology, London School of Hygiene and Tropical Medicine

Extract

A comparison of the characteristics of two strains of S. haematobium in experimental infections in hamsters is made. A limited study of these strains is also made in Mastomys.

Growth changes in male and female adult worms are compared, as are changes in the uterine egg counts.

The quantitative distribution of eggs in the tissues of the hamster is recorded. The approximate mean daily egg output per female worm for each strain is calculated at specified time intervals, and for the entire period of observations.

The recorded characteristics of the two strains of parasite are compared with those described for other strains of S. haematobium.

It is considered that the hamster provides a useful model for such studies provided that standardised infection procedures are employed.

It is considered that differences in host characteristics and susceptibility of individual animals account for the apparent variability recorded with regard to growth of parasites and egg depositions.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1971

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Capron, A., Deblock, S., Biguet, J., Clay, A., Adenis, L. and Vernes, A., 1965.—“Contribution a l'étude expérimentale de la bilharziose à Schistosoma haematobium.” Bull. Wld Hlth Org., 32, 755778.Google Scholar
Meleney, H. E., Moore, D. V., Most, H. and Carney, B. H., 1952.—“The histopathology of experimental schistosomiasis. I. The hepatic lesions in mice infected with S. mansoni, S. japonicum and S. haematobium.” Am. J. trop. Med. Hyg., 1, 263285.CrossRefGoogle Scholar
Nelson, G. S. and Saoud, M. F. A., 1966.—“The daily egg output of Schistosoma mansoni in rhesus monkeys.” Trans. R. Soc. trop. Med. Hyg., 60, 429430.CrossRefGoogle Scholar
Saoud, M. F. A., 1965.—“Comparative studies on the characteristics of some geographical strains of Schistosoma mansoni in mice and hamsters.” J. Helminth., 39, 101112.CrossRefGoogle Scholar
Smithers, S. R. and Terry, R. J., 1965.—“The infection of laboratory hosts with cercariae of Schistosoma mansoni and the recovery of the adult worms.” Parasitology, 55, 695700.CrossRefGoogle ScholarPubMed
Wright, C. A. and Bennett, M. S., 1967a.—“Studies on Schistosoma haematobium in the laboratory. I. A strain from Durban, Natal, South Africa.” Trans. R. Soc. trop. Med. Hyg., 61, 221227.CrossRefGoogle Scholar
Wright, C. A. and Bennett, M. S., 1967b.—“Studies on Schistosoma haematobium in the laboratory. II. A strain from South Arabia.” Trans. R. Soc. trop. Med. Hyg., 61, 228233.CrossRefGoogle Scholar