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Shedding patterns of Schistosoma mansoni and Ribeiroia marini cercariae from a mixed infection of Biomphalaria glabrata

Published online by Cambridge University Press:  05 June 2009

André Théron
Affiliation:
Département de Biologie Animale, U.A. no 698, C.N.R.S., Université, Avenue de Villeneuve, 66025 Perpignan Cedex, France.
Hélène Moné
Affiliation:
Département de Biologie Animale, U.A. no 698, C.N.R.S., Université, Avenue de Villeneuve, 66025 Perpignan Cedex, France.

Abstract

When the snail Biomphalaria glabrata is doubly infected by two species of trematode. Schistosoma mansoni and Ribeiroia marini, each species keeps its own cercarial shedding pattern. Emergence of S. mansoni cercariae occurs during the photophase while the R. marini cercariae are shed during the night. These results demonstrate the absence of interference between the machanisms responsible for the cercarial shedding of each species. The only difference noted concerns a two-hour shift in the peak emergence of S. mansoni as a consequence of the antagonism between the two parasites.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1986

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References

REFERENCES

Basch, P. F., Lie, K. J. & Heyneman, D. (1970) Experimental double and triple infections of snails with larval trematodes. Southeast Asian Journal of Tropical Medicine and Public Health, 1, 129137.Google Scholar
Heyneman, D., Lim, H. K. & Jeyarasasingham, U. (1972) Antagonism of Echinostoma liei (Trematoda: Echinostomatidae) against the trematodes Paryphostomum segregatum and Schistosoma mansoni. Parasitology, 65, 223233.CrossRefGoogle ScholarPubMed
Lie, K. J. (1967) Antagonism of Paryphostomum segregatum rediae to Schistosoma mansoni sporocysts in the snail Biomphalaria glabrata. Journal of Parasitology, 53, 969976.CrossRefGoogle ScholarPubMed
Lim, H. K. & Heyneman, D. (1972) Intramolluscan inter-trematode antagonism: a review of factors influencing the host-parasite system and its possible role in biological control. Advances in Parasitology, 10, 191268.CrossRefGoogle ScholarPubMed
Théron, A. (1975) Chronobiologie des cercaires de Ribeiroia marini (Faust et Hoffman, 1934) parasite de Biomphalaria glabrata: action de la photopériode sur le rythme d'émission. Acta Tropica, 32, 309316.Google Scholar
Théron, A. (1980) Mise en évidence de races chronobiologiques de Schistosoma mansoni, agent de la bilharziose, à partir des cinétiques d'émission cercarienne. Comptes Rendus de l'Académie des Sciences, paris, 291, ser. D, 279282.Google Scholar
Théron, A. (1982) Le compartiment cercaire dans le cycle de Schistosoma mansoni. Ecologie de la transmission bilharzienne en Guadeloupe. Thèse de Doctorat d'Etat, Université de Perpignan, 506. ppGoogle Scholar
Théron, A. (1984) Early and late shedding patterns of Schistosoma mansoni cercariae: ecological significance in transmission to human and murine host. Journal of Parasitology, 70, 652655.CrossRefGoogle Scholar
Théron, A. (1985) Polymorphisme du rythme d'émission des cercaires de Schistosoma mansoni et ses relations avec l'écologie de la transmission du parasite. Vie et Millieu, 35, 2331.Google Scholar