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Transient non-susceptibility to Schistosoma mansoni associated with atrial amoebocytic accumulations in the snail host Biomphalaria glabrata

Published online by Cambridge University Press:  06 April 2009

C. S. Richards  and
D. J. Minchella
C. S. Richards
Affiliation:
Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20205
D. J. Minchella*
Affiliation:
Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907
*
†Reprint requests to Dr D. J. Minchella.
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Summary

In some Biomphalaria glabrata–Schistosoma mansoni combinations snails are susceptible to infection as juveniles, but have variable susceptibility as adults. These snails become non-susceptible at the onset of egg-laying and typically revert to susceptibility in old age. Certain stocks of B. glabrata have the capacity to form amoebocytic accumulations in the atrium, and this ability is under genetic control. The atrial amoebocytic accumulations are transitory, typically appearing at onset of egg-laying and disappearing after a few months. A snail stock which has genetic tendencies for both adult variable susceptibility and atrial amoebocytic accumulations was studied. An association between the time of occurrence of adult non-susceptibility and atrial accumulation is revealed as snails never became infected with S. mansoni when amoebocytic accumulations were present. Developing parasites, however, were not necessarily encapsulated and destroyed by amoebocytes. Some sporocysts were able to delay development until the amoebocytic accumulations disappeared. The timing of atrial amoebocytic accumulations and resulting transient non-susceptibility in this host-parasite combination could influence snail population dynamics.

Type
Research Article
Information
Parasitology , Volume 95 , Issue 3 , December 1987 , pp. 499 - 505
Copyright
Copyright © Cambridge University Press 1987

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References

Anderson, R. M. & May, R. M. (1979). Prevalence of schistosome infections within molluscan populations: observed patterns and theoretical predictions. Parasitology 79, 63–94.CrossRefGoogle ScholarPubMed
Anderson, R. M., Mercer, J. G., Wilson, R. A. & Carter, N. P. (1982). Transmission of Schistosoma mansoni from man to snail: experimental studies of miracidial survival and infectivity in relation to larval age, water temperature, host size and host age. Parasitology 85, 339–60.CrossRefGoogle Scholar
Lo Verde, P. T., Gherson, J. & Richards, C. S. (1982a). Reaction against self in an invertebrate? Journal of Invertebrate Pathology 39, 247–9.CrossRefGoogle Scholar
Lo Verde, P. T., Gherson, J. & Richakds, C. S. (1982b). Amoebocytic accumulations in Biomphalaria glabrata: fine structure. Developmental and Comparative Immunology 6, 441–9.CrossRefGoogle Scholar
Minchella, D. J. (1985). Host life-history variation in response to parasitism. Parasitology 90, 205–16.CrossRefGoogle Scholar
Minchella, D. J. & Lo Verde, P. T. (1983). Laboratory comparison of the relative success of Biomphalaria glabrata stocks which are susceptible and insusceptible to infection with Schistosoma mansoni. Parasitology 86, 335–44.CrossRefGoogle ScholarPubMed
Richards, C. S. (1967). Estivation of Biomphalaria glabrata (Basommatophora: Planorbidae). American Journal of Tropical Medicine and Hygiene 16, 797–802.CrossRefGoogle ScholarPubMed
Richards, C. S. (1973). Susceptibility of adult Biomphalaria glabrata to Schistosoma mansoni infection. American Journal of Tropical Medicine and Hygiene 22, 749–56.CrossRefGoogle ScholarPubMed
Richards, C. S. (1975 a). Genetic studies of pathologic conditions and susceptibility to infection in Biomphalaria glabrata. Annals of the New York Academy of Sciences, USA 266, 394–410.CrossRefGoogle ScholarPubMed
Richards, C. S. (1975 b). Genetic factors in susceptibility of Biomphalaria glabrata for different strains of Schistosoma mansoni. Parasitology 70, 231–41.CrossRefGoogle ScholarPubMed
Richards, C. S. (1976). Variations in infectivity for Biomphalaria glabrata in strains of Schistosoma mansoni from the same geographic area. Bulletin of the World Health Organization 54, 706–7.Google Scholar
Richards, C. S. (1977). Schistosoma mansoni: susceptibility reversal with age in the snail host Biomphalaria glabrata. Experimental Parasitology 42, 165–8.CrossRefGoogle ScholarPubMed
Richards, C. S. (1980). Genetic studies on amoebocytic accumulations in Biomphalaria glabrata. Journal of Invertebrate Pathology 35, 49–52.CrossRefGoogle Scholar
Richards, C. S. (1984). Influence of snail age on genetic variations in susceptibility of Biomphalaria glabrata for infection with Schistosoma mansoni. Malacologia 25, 493–502.Google Scholar
Richards, C. S. & Merritt, J. W. (1975). Variation in size of Biomphalaria glabrata at maturity. The Veliger 17, 393–5.Google Scholar
Sturrock, R. F. (1973). Field studies on the transmission of Schistosoma mansoni and on the bionomics of its intermediate host, Biomphalaria glabrata, on St Lucia, West Indies. International Journal for Parasitology 3, 175–94.CrossRefGoogle Scholar
Sturrock, R. F. & Webbe, G. (1971). The application of catalytic models to schistosomiasis in snails. Journal of Helminthology 45, 189–200.CrossRefGoogle ScholarPubMed
Sullivan, J. T. & Richards, C. S. (1981). Schistosoma mansoni, NIH-SM-PR-2 strain, in susceptible and non-susceptible stocks of Biomphalaria glabrata: comparative histology. Journal of Parasitology 67, 702–8.CrossRefGoogle Scholar