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Emergence of cercariae of Echinostoma caproni and Schistosoma mansoni from Biomphalaria glabrata under different laboratory conditions

Published online by Cambridge University Press:  12 April 2024

B. Fried ,
R. Laterra  and
Y. Kim
B. Fried*
Affiliation:
Department of Biology, Lafayette College, Easton, PA 18042, USA
R. Laterra
Affiliation:
Department of Biology, Lafayette College, Easton, PA 18042, USA
Y. Kim
Affiliation:
Department of Biology, Lafayette College, Easton, PA 18042, USA
*
* Fax: (610) 330 5705 E-mail: friedb@lafayette.edu
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Abstract

Release of Echinostoma caproni cercariae and Schistosoma mansoni from experimentally infected Biomphalaria glabrata snails maintained under different laboratory conditions was studied. Infected snails were isolated individually for 1 h in Stender dishes containing 5 ml of artificial spring water and the number of cercariae released during this time was recorded. Of numerous conditions tested, the addition of lettuce, the use of water conditioned by B. glabrata snails and a temperature of 35°C significantly increased the release of E. caproni cercariae. A significant increase in cercarial release of S. mansoni was seen only in cultures fed lettuce. A temperature of 12°C caused a significant decrease in cercarial release of both E. caproni and S. mansoni. Increased snail activity associated with feeding behaviour was probably responsible for the enhanced cercarial sheds observed in this study.

Type
Research Article
Information
Journal of Helminthology , Volume 76 , Issue 4 , December 2002 , pp. 369 - 371
Copyright
Copyright © Cambridge University Press 2002

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References

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