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Experimental transmission of Schistosoma mansoni in brackish waters*

Published online by Cambridge University Press:  06 April 2009

Eli Chernin  and
Carol Bower
Eli Chernin
Affiliation:
Department of Tropical Public Health, Harvard School of Public Health, Boston, Mass. 02115, U.S.A.
Carol Bower
Affiliation:
Department of Tropical Public Health, Harvard School of Public Health, Boston, Mass. 02115, U.S.A.
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Extract

In the laboratory, transmission of Schistosoma mansoni to and from Biomphalaria glabrata can occur in artificial sea water at or below a concentration of 12-5%. Miracidia can also emerge and infect snails in 25 % sea water, but this concentration is inimical to the survival of the snails or their eggs. The parasite thus appears to be better adapted to brackish water than is the intermediate host. Epidemiological studies are needed to assess the limits imposed by brackish waters on the natural transmission of schistosomiasis.

Type
Research Article
Information
Parasitology , Volume 63 , Issue 1 , August 1971 , pp. 31 - 36
Copyright
Copyright © Cambridge University Press 1971

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References

REFERENCES

Abdel Malek, E. (1958). Factors conditioning the habitat of bilharziasis intermediate hosts in the family Planorbidae. Bulletin of the World Health Organization 18, 785–818.Google ScholarPubMed
Benex, J. & Deschiens, R. (1963). Incidence des facteurs externes sur Ia longévité et la vitalité des miracidiums de Schistosoma mansoni. Bulletin de la Société de pathologie exotique 56, 987–92.Google Scholar
Blair, D. M. (1956). Bilharziasis survey in British West and East Africa, Nyasaland and the Rhodesias. Bulletin of the World Health Organization 15, 203–73.Google Scholar
Brumpt, E. (1941). Observations biologiques diverses concernant Planorbis (Australorbis) glabratus, hôtc intermédiare de Schistosoma mansoni. Annales de parasitologie humaine et comparée 18, 9–45.Google Scholar
Caspars, H. (1967). Estuaries: analysis of definitions and biological considerations. Estuaries. Ed. Lauff, G. H. Publ. no. 83, pp. 6–8, American Association for the Advancement of Science, Washington, D.C.Google Scholar
Cherenin, E. & Dunavan, C. A. (1962). The influence of host—parasite dispersion upon the capacity of Schistosoma mansoni miracidia to infect Australorbis glabratus. American Journal of Tropical Medicine and Hygiene 11, 455–71.CrossRefGoogle Scholar
Gilles, H. M., Lucas, A., Lindner, R., Cockshott, W. P., Anand, S. V., Ikeme, A. & Cowper, S. G. (1965). Schistosoma haematobium infection in Nigeria. III. Infection in boatyard workers at Epe. Annals of Tropical Medicine and Parasitology 59, 451–6.Google Scholar
Hoffman, W. A. & Faust, E. C. (1934). Studies on schistosomiasis mansoni in Puerto Rico. II. The epidemiology and geographical distribution of schistosomiasis mansoni in Puerto Rico. Puerto Rico Journal of Public Health and Tropical Medicine 9, 228–82.Google Scholar
Ito, J. (1955). Studies on hatchability of Schistosoma japonicum eggs in several external environmental conditions. Japanese Journal of Medical Science and Biology 8, 175–84.Google Scholar
Okamoto, K. (1962). Behavior of schistosomal miracidia and the change in osmotic pressure of the surrounding medium. Japanese Journal of Parasitology 11, 461–6.Google Scholar
Okpala, L. (1961). Studies on Schistosoma haematobium infection in school children in Epe, Western Nigeria. West African Medical Journal 10 (N.S.), 402–12.Google Scholar
Standen, O. D. (1951). The effects of temperature, light and salinity upon the hatching of the ova of Schistosoma mansoni. Transactions of the Royal Society of Tropical Medicine and Hygiene 45, 225–41.Google Scholar
Styczynska-Jurewtcz, E. (1965). The influence of a brackish environment on the development of eggs and viability of miracidia of Fasciola hepatica. Acta parasitologica polonica 13, 483–97.Google Scholar
Swynnerton, C. R. A. (1957). Bilharziasis and the 1st (West African) Brigade. Journal of the Royal Army Medical Corps 103, 98–101.Google Scholar
Watson, J. M. (1958). Ecology and distribution of Bulinus truncatus in the Middle East. Bulletin of the World Health Organization 18, 833–94.Google Scholar
Yasuraoka, K. (1961). The effect of hydrogen ion concentration and salinity of water on extruding response and survival of Oncomelania nosophora, the vector snail of Schistosoma japonicum in Japan. Japanese Journal of Medical Science and Biology 14, 61–8.Google Scholar