Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-28T04:25:13.238Z Has data issue: false hasContentIssue false
  • English
  • Français

Decoy effect and host infection by miracidia within snail communities

Published online by Cambridge University Press:  06 April 2009

N. H. Chipev
N. H. Chipev
Affiliation:
Institute of Parasitology, Bulgarian Academy of Sciences, Akad. G. Bontchev str Block 25, 1113 Sofia, Bulgaria
Get access Rights & Permissions [Opens in a new window]

Summary

The effect of experimental non-host snail (NHS) communities on the infection of Lymnaea truncatula with Paramphistomum daubneyi and Fasciola hepatica miracidia was studied. The results obtained indicated that NHS had variable effects on basic population parameters of host infection. Specifically, NHS were able to produce aggregation of sporocyst number/snail in the experimental host populations. Proposed hypotheses for decoy effect mechanisms failed to explain completely the experimental results. A new mechanism is suggested, based on a distance response of miracidia to snail chemo-attractants, to explain effects of NHS on miracidial host finding behaviour. It is assumed that miracidia have evolved the ability to discriminate among individual snail chemical attractants in a community already at a distance. This attribute of miracidial behaviour allows NHS to induce variations in the effectiveness of individual host localization by miracidia. The resulting aggregation of successful infections/host is assumed to be the specific component of snail decoy effect at the community level. It was also established that NHS affected trematode reproduction in the host inducing a compensatory increase in the intramolluscan population. Intraspecific competition among developmental stages is suggested to be the mechanism of this compensatory reaction.

Keywords

Fasciola hepaticaParamphistomum daubneyimiracidiaLymnaea truncatuladecoy effectsnail community
Type
Research Article
Information
Parasitology , Volume 106 , Issue 3 , April 1993 , pp. 265 - 276
Copyright
Copyright © Cambridge University Press 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Anderson, R. M. (1978). Population dynamics of snail infection by miracidia. Parasitology 77, 201–24.CrossRefGoogle ScholarPubMed
Anderson, R. M., Whitfield, P. J. & Dobson, A. P. (1978). Experimental studies of infection dynamics: infection of the definitive host by the cercariae of Transversotrema patialense. Parasitology 77, 189–200.CrossRefGoogle ScholarPubMed
Bash, P. F. (1976). Intermediate host specificity in Schistosoma mansoni. Experimental Parasitology 39, 150–69.CrossRefGoogle Scholar
Chernin, E. (1968). Interference with the capacity of Schistosoma mansoni miracidia to infect the molluscan host. Journal of Parasitology 54, 509–16.CrossRefGoogle ScholarPubMed
Chernin, E. (1974). Some host-finding attributes of Schistosoma mansoni miracidia. American Journal of Tropical Medicine and Hygiene 23, 320–7.CrossRefGoogle ScholarPubMed
Chernin, E. & Perlstein, J. M. (1969). Further studies on interference with the host finding capacity of Schistosoma mansoni miracidia. Journal of Parasitology 55, 500–8.CrossRefGoogle ScholarPubMed
Christensen, N. O. (1980). A review of the influence of host- and parasite-related factors and environmental conditions on the host-finding capacity of the trematode miracidium. Acta Tropica 37, 303–18.Google ScholarPubMed
Christensen, N. O., Nansen, P. & Frandsen, F. (1976). Molluscs interfering with the capacity of Fasciola hepatica miracidia to infect Lymnaea truncatula. Parasitology 73, 161–7.CrossRefGoogle ScholarPubMed
Combes, C. & Mone, H. (1983). Résultats préliminaires d'une étude de l'influence des mollusques non cibles sur la transmission de Schistosoma mansoni. Bulletin de la Société Française de Parasitologie 1, 23–6.Google Scholar
Combes, C. & Mone, H. (1987). Possible mechanisms of the decoy effect in Schistosoma mansoni transmission. International Journal for Parasitology 17, 971–5.CrossRefGoogle ScholarPubMed
Dobson, A. P. (1985). The population dynamics of competition between parasites. Parasitology 91, 317–47.CrossRefGoogle ScholarPubMed
Frandsen, F. (1976). The suppression, by Helisoma duryi, of the cercarial production of Schistosoma mansoni infected Biomphalaria pfeifferi. Bulletin of the World Health Organization 53, 385–90.Google ScholarPubMed
Frandsen, F. & Christensen, N. O. (1977). Effect of Helisoma duryi on the survival, growth and cercarial production of Schistosoma mansoni-infected Biomphalaria glabrata. Bulletin of the World Health Organization 55, 577–80.Google ScholarPubMed
Haas, W. & Voigt, W. P. (1988). Host Finding – A Physiological Effect. In Parasitology in Focus. Facts and Trends (ed. Melhorn, H.), pp. 454–464. Berlin: Springer Verlag.CrossRefGoogle Scholar
Kostova, T. V. & Chipev, N. H. (1991). A model of the dynamics of intramolluscan trematode populations: some problems concerning oscillatory behavior. Journal of Computers and Mathematics with Application 21, 1–15.CrossRefGoogle Scholar
Laraquente, A., Brown, R. A. & Jobin, W. (1979). Comparison of four species of snails as potential decoys to intercept schistosome miracidia. American Journal of Tropical Medicine and Hygiene 28, 99–105.CrossRefGoogle Scholar
Macinnis, A. J. (1976). How parasites find their hosts: some thoughts on the inception of host-parasite integration. In Ecological Aspects of Parasitology (ed. Kennedy, C. R.), pp. 3–20. Amsterdam: North Holland Publishing Company.Google Scholar
Malek, E. A. & Malek, R. R. (1978). Potential biological control of schistosomiasis intermediate hosts by Helisome snails. Nautilus 92, 15–18.Google Scholar
Maximov, V. N. (1980). Factorial Experiment in Biology, Moscow: Moscow University Press. (In Russian.)Google Scholar
Mone, H. (1991). Influence of non-target molluscs on the growth of Biomphalaria glabrata infected with Schistosoma mansoni: correlation between growth and cercarial production. Journal of Mollusc Studies 57, 1–10.CrossRefGoogle Scholar
Mone, H. & Combes, C. (1986). Analyse expérimentale de l'effect ‘decoy’ (ou effet leurre) exerce par les mollusques non cibles sur le systeme hote–parasite Biomphalaria glabrata (Say, 1818) – Schistosoma mansoni Sambon, 1907. Oecologia Applicata 7, 281–6.Google Scholar
Mone, H., Theron, A. & Combes, C. (1986). Interaction between the Biomphalaria glabrata–Schistosoma mansoni host-parasite system and the non-target molluscs: influence on cercarial production. Journal of Parasitology 72, 410–16.CrossRefGoogle ScholarPubMed
Nansen, N. O. (1980). A review of the influence of host-and parasite-related factors and environmental conditions on the host finding capacity of the trematode miracidium. Acta Tropica 37, 303–18.Google Scholar
Saladin, R. S. (1979). Behavioral parasitology and perspectives of miracidial host-finding. Zeitschrift für Parasitenkunde 60, 197–210.CrossRefGoogle ScholarPubMed
Sponholz, G. M. & Short, R. B. (1976). Schistosoma mansoni miracidia: Stimulation by calcium and magnesium. Journal of Parasitology 62, 155–7.CrossRefGoogle Scholar
Sudarikov, V. E. & Shigin, A. A. (1975). On the role of components of aquatic biocenoses in the elimination of trematodes. Trudi GELAN 25, 168–80. (In Russian.)Google Scholar
Upatham, E. S. (1972). Interference by unsusceptible aquatic animals with the capacity of the miracidia of Schistosoma mansoni Sambon to infect Biomphalaria glabrata (Say) under field simulated conditions in St. Lucia, West Indies. Journal of Helminthology 46, 277–83.CrossRefGoogle Scholar
Upatham, E. S. & Sturrock, R. F. (1973). Field investigations on the effects of other aquatic animals on the infection of Biomphalaria glabrata by Schistosoma mansoni miracidia. Journal of Parasitology 59, 448–53.CrossRefGoogle ScholarPubMed
Wright, D. G. S. & Ronald, K. (1972). Effect of amino acids and light on the behavior of miracidia of Schistosomatium douthitti. Canadian Journal of Zoology 50, 855–60.CrossRefGoogle ScholarPubMed
Yates, F. (1937). The Design and Analysis of Factorial Experiment. Harpenden, England: Imperial Bureau of Soil Sciences.Google Scholar