Exposure of Caged Biomphalaria glabrata (Say) to Investigate Dispersion of Miracidia of Schistosoma mansoni Sambon in Outdoor Habitats in St. Lucia * | Journal of Helminthology | Cambridge Core (original) (raw)

Extract

1. Laboratory studies showed two types of cages to be suitable for exposing uninfected B. glabrata in field habitats as a means of locating S. mansoni miracidial infestations.

2. Tests conducted in tanks under simulated field conditions showed that miracidia moved away from the point of inoculation in non-random fashion and congregated at the margins of the tanks.

3. In a natural habitat, miracidia located and infected caged snails at distances of 33 cm vertically and 106·7 cm horizontally.

4. The pattern of infection was similar in the simulated field and field experiments, but field infection rates were lower.

5. For transmission studies in field habitats, caged laboratorybred snails should be placed at the margin of the habitat to ensure the maximum snail-miracidium interaction.

References

Barbosa, F. S. and Carneiro, E., 1965.—“Penetration of S. mansoni miracidia in abnormal hosts”. Rev. Inst. Med. Trop. Sao Paulo, 7, 99–102.Google Scholar

Broadbent, S. R. and Kendall, D. G., 1953.—“The random walk of _Tricho strongylus retortaeformis_”. Biometrics, 9, 460–466.CrossRefGoogle Scholar

Chernin, E., 1970.—“Behavioural responses of miracidia of S. mansoni and other trematodes to substances emitted by snails”. J. Parasit., 56, 287–296.CrossRefGoogle Scholar

Chernin, E., AND Donavan, C. A., 1902.—“The influence of host-parasite dispersion upon the capacity of S. mansoni miracidia to infect _A. glabratus_”. Am. J. irop. Med. Hyg., 11, 455–471.CrossRefGoogle Scholar

Etges, F. J. and DECKER, C. L., 1903.—“Chemosensitivity of the miracidium of S. mansoni to A. glabratus and other snails”. J. Parasit., 49,114–110.CrossRefGoogle Scholar

Faust, E. C., 1924.—“The reactions of the miracidia of S. japonicum and S. haematobium in the presence of their intermediate hosts”. J. Parasit., 10, 199–204.CrossRefGoogle Scholar

Faust, E. C., AND Hoffman, W. A., 1934.—“Studies on S. mansoni in Puerto Rico. HI. Biological studies. I. The extra mammalian phases of the life cycle”. Puerto RicoJ. publ. Hlth trop, Med., 10, 1–49.Google Scholar

Mcclelland, W. F. J., 1965.—“Exposure of laboratory bred snails in natural situations. In East African Institute for Medical Research, Annual Report 1903–1904. Mwanza, Tanzania, pp. 18–20.Google Scholar

MacInnis, A. J., 1965.—“Responses of S. mansoni miracidia to chemical attractants.” J. Parasit., 51, 731–740.CrossRefGoogle Scholar

Malek, A. E., 1959.—“Susceptibility of the snail B. boissyi to infection with certain strains of _S. mansoni_”. Am. J. trop. Med., 30, 887–894.Google Scholar

Shiff, C. J., 1968.—“Location of Bulinus (Physopsis) globosus by miracidia of _S. haematobium_”. J. Parasit., 54, 1133–1140.CrossRefGoogle Scholar

Shiff, C. J., 1969.—“Influence of light and depth on location of Bulinus globosus by miracidia of _S. haematobium_”. J. Parasit., 55, 108–110.CrossRefGoogle Scholar

Shiff, C. J., and Kriel, R. L., 1970.—“A water-soluble product of Bulinus globosus attractive to S. haemalobium miracidia”. J. Parasit., 56, 281–280.CrossRefGoogle Scholar

Standen, O. D., (1949.—“Experimental schistosomiasis. II. Maintenance of S. mansoni in the laboratory, with some notes on experimental infection with _S. haematobium_”. Ann. trop. Med. Parasit., 43, 208.CrossRefGoogle Scholar

Steel, R. G. D. and Torrie, J. H., 1900.—“Principles and procedures of statistics”. McGraw-Hill Book Co. New York. 481 pp.Google Scholar

Upatham, E. S., 1970.—“Bionomics of S. mansoni”. Ph.D thesis : University of Michigan. Ann Arbor, Michigan. 187 pp.Google Scholar

Winer, B. J., 1902.—“Statistical principles in experimental design”. pp. 77–85, McGraw-Hill Book Co. New York.Google Scholar

Wright, C. A., 1966.—“Relationships between schistosomes and their molluscan hosts in Africa”. J. Helminth., 40, 402–412.CrossRefGoogle ScholarPubMed