Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-22T16:41:04.998Z Has data issue: false hasContentIssue false

Effect of Water Depth on the Infection of Biomphalaria glabrata by Miracidia of St. Lucian Schistosoma mansoni under Laboratory and Field Conditions

Published online by Cambridge University Press:  05 June 2009

Edward Suchart Upatham*
Affiliation:
Research and Control Department, Castries, St. Lucia.
*
* Staff member of the Rockefeller Foundation, 111 West 50th Street, New York. N.Y. 10020.

Extract

1. Laboratory and field trials were carried out to investigate the influence of depth on the infection of B. glabrata by St. Lucian S. mansoni miracidia.

2. In both laboratory and field experiments, miracidia located and infected snails to a depth of 122 cm.

3. The degree of infection seems to be related to the size of a habitat and its water volume.

4. Infection rates were high at the miracidial point of entry where miracidium-snail interaction was maximum and at the water surface where miracidia eventually congregated.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1972

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

REFERENCES

Bell, D. R., 1963.—“A new method for counting Schistosoma mansoni eggs in faeces. With special reference to therapeutic trials.” Bull. Wld Hllh Org., 29, 525530.Google ScholarPubMed
Chernin, E. and Dunavan, C. A., 1962.—“The influence of host-parasite dispersion upon the capacity of Schistosoma mansoni miracidia to infect Auslralorbis glabratus.” Am. J. Trop. Med. Hyg., 11, 455471.CrossRefGoogle ScholarPubMed
SHIFF, C. J., 1969.—“Influence of light and depth on location of Bulinus globosus by miracidia of Schistosoma haetnatobium.” J. Parasit., 55, 108.CrossRefGoogle Scholar
Upatham, E. S., 1970.—“Bionomics of miracidia of Schistosoma mansoni.” Ph.D. thesis at the University of Michigan. Ann Arbor, Michigan.Google Scholar
Upatham, E. S., 1972a.—“Exposure of caged Biomphalaria glabrata to investigate dispersion of miracidia of Schistosoma mansoni in field simulated and field habitats in St. Lucia, West Indies.” J . Helminth., 46, 297306.CrossRefGoogle Scholar
Upatham, E. S., 1972b.—“Effects of some physico-chemical factors on the infection of Biomphalaria glabrata by miracidia of Schistosoma mansoni in St. Lucia, West Indies.” J. Helminth., 46, 308316.Google Scholar