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Transmission of Schistosoma mansoni from man to snail: laboratory studies on the influence of snail and miracidial densities on transmission success

Published online by Cambridge University Press:  06 April 2009

N. P. Carter ,
R. M. Anderson  and
R. A. Wilson
N. P. Carter
Affiliation:
Biology Department, University of York, Heslington, York, Y01 5DD
R. M. Anderson
Affiliation:
Department of Pure and Applied Biology, Imperial College, London University, London SW7 2BB
R. A. Wilson
Affiliation:
Biology Department, University of York, Heslington, York, Y01 5DD
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Summary

The relationship between infection success, the density of Schistosoma mansoni miracidia and the density of the snail host Biomphalaria glabrata was examined experimentally. Within laboratory infection arenas, the distribution of miracidial infections/snail was approximately uniform and the net rate of snail infection was directly positive binomial to miracidial density. In contrast, however, the rate of infection declined exponentially as snail density increased. Mathematical models are developed to aid in the estimation of infection rates and experimental results are discussed in the context of the transmission dynamics of schistosomiasis.

Type
Research Article
Information
Parasitology , Volume 85 , Issue 2 , October 1982 , pp. 361 - 372
Copyright
Copyright © Cambridge University Press 1982

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