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Cercarial shedding patterns of Schistosoma bovis and S. haematobium from single and mixed infections of Bulinus truncatus

Published online by Cambridge University Press:  05 June 2009

A. Mouahid ,
H. Moné ,
A. Chaib  and
A. Théron
A. Mouahid
Affiliation:
Laboratoire de Biologie Animale, U.R.A. no. 698 du C.N.R.S., Centre de Biologie et d'Ecologie Tropicale et Méditerranéenne, Université, Avenue de Villeneuve, 66860 Perpignan Cedex, France
H. Moné
Affiliation:
Laboratoire de Biologie Animale, U.R.A. no. 698 du C.N.R.S., Centre de Biologie et d'Ecologie Tropicale et Méditerranéenne, Université, Avenue de Villeneuve, 66860 Perpignan Cedex, France
A. Chaib
Affiliation:
Laboratoire de Biologie Animale, U.R.A. no. 698 du C.N.R.S., Centre de Biologie et d'Ecologie Tropicale et Méditerranéenne, Université, Avenue de Villeneuve, 66860 Perpignan Cedex, France Centre de santé, BP 23, Attaouia, Kelaa Sraghna, Morocco
A. Théron
Affiliation:
Laboratoire de Biologie Animale, U.R.A. no. 698 du C.N.R.S., Centre de Biologie et d'Ecologie Tropicale et Méditerranéenne, Université, Avenue de Villeneuve, 66860 Perpignan Cedex, France
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Abstract

The cercarial shedding of Schistosoma bovis and S. haematobium were studied in single and mixed infections in the snail host Bulinus truncatus. The two species displayed a distinctive diurnal cercarial emergence with an earlier shedding pattern for S. bovis than S. haematobium (the average emergence peaks were respectively at 0800 h and 1200 h). In mixed infections, each species kept its own cercarial shedding rhythm with no marked alterations. The cercarial emergence pattern is proposed as a new method to identify natural mixed infections in the snail intermediate hosts. The interactions between the two parasites are discussed.

Keywords

Schistosoma bovisSchistosoma haematobiumBulinus trancatuscercarial sheddingemergence rhythmsparasitic associations
Type
Research Papers
Information
Journal of Helminthology , Volume 65 , Issue 1 , March 1991 , pp. 8 - 14
Copyright
Copyright © Cambridge University Press 1991

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