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The population dynamics of Gyrodactylus bullatarudis (Monogenea) within laboratory populations of the fish host Poecilia reticulata

Published online by Cambridge University Press:  06 April 2009

Marilyn E. Scott
Affiliation:
Department of Pure and Applied Biology, Imperial College, London University, London SW7 2BB
R. M. Anderson
Affiliation:
Department of Pure and Applied Biology, Imperial College, London University, London SW7 2BB

Summary

Experiments were undertaken to investigate the factors which influence the transmission dynamics of Gyrodactylus bullatarudis within populations of laboratory guppies. The parasites possess a number of biological attributes which are almost unique amongst helminth parasites of vertebrates. These include the ability to reproduce viviparously and directly on the surface of the host, the ability to survive death of the host (for a short period of time) and the ability to transfer between hosts (despite the absence of a specialized transmission stage in the parasite's life-cycle). Long-term laboratory experiments demonstrated the inability of the parasite to persist within populations of the host in the absence of the continual introduction of naive susceptible fish. With regular addition of susceptible fish, the parasite population exhibited recurrent epidemic behaviour. The magnitudes of the epidemics and the time interval between them, were dependent on the rate at which fish were added to the populations. The parasite was over-dispersed in its distribution within the experimental fish populations and was a significant cause of host mortality (in a manner related to parasite burden). The experimental results suggest that acquired resistance to infection is an important factor determining epidemic behaviour.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1984

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References

Anderson, R. M. & Gordon, D. M. (1982). Processes influencing the distribution of parasite numbers within host populations with special emphasis on parasite-induced host mortalities. Parasitology 85, 373–98.CrossRefGoogle ScholarPubMed
Anderson, R. M., Gordon, D. M., Crawley, M. J. & Hassell, M. P. (1982). Variability in the abundance of animal and plant species. Nature, London 296, 245–8.CrossRefGoogle Scholar
Anderson, R. M. & May, R. M. (1978). Regulation and stability of host-parasite population interactions. I. Regulatory processes. Journal of Animal Ecology 47, 219–47.CrossRefGoogle Scholar
Anderson, R. M. & May, R. M. (1979). Population biology of infectious diseases: Part I. Nature, London 280, 361–7.CrossRefGoogle ScholarPubMed
Anderson, R. M. & May, R. M. (1981). The population dynamics of microparasites and their invertebrate hosts. Philosophical Transactions of the Royal Society of London 291, 451524.Google Scholar
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, 189200.CrossRefGoogle ScholarPubMed
Bailey, N. T. J. (1975). The Mathematical Theory of Infectious Diseases and Its Applications. London: Griffin.Google Scholar
Carter, N. P., Anderson, R. M. & Wilson, R. A. (1982). Transmission of Schistosoma mansoni from man to snail: laboratory studies on the influence of snail and miracidial densities on transmission success. Parasitology 85, 361–72.CrossRefGoogle Scholar
Dietz, K. (1982). Overall population patterns in the transmission cycle of infectious disease agents. In Population Biology of Infectious Diseases (ed. Anderson, R. M. and May, R. M.), pp. 87102. New York: Springer-Verlag.CrossRefGoogle Scholar
Fenner, F. (1948). The epizootic behaviour of mouse pox (infectious ectromelia of mice). II. The course of events in long-continued epidemics. Journal of Hygiene 46, 383–93.Google Scholar
Fenner, F. (1949). Studies in mouse pox (infectious ectromelia of mice). TV. Quantitative investigations on the spread of virus through the host in actively and passively immunized animals. Australian Journal of Experimental Biology and Medical Sciences 27, 118.CrossRefGoogle Scholar
Fisher, R. A., Corbet, A. S. & Williams, C. B. (1943). The relation between the number of species and the number of individuals in a random sample of an animal population. Journal of Animal Ecology 12, 4258.CrossRefGoogle Scholar
Greenwood, M., Bradford-Hill, A., Topley, W. W. C. & Wilson, J. (1936). Experimental epidemiology. Medical Research Council Special Report 209, 204 pp.Google Scholar
Greenwood, M. & Topley, W. W. C. (1925). A further contribution to the experimental study of epidemiology. Jourmnal of Hygiene 24, 45110.CrossRefGoogle Scholar
Keymer, A. (1981). Population dynamics of Hymenolepis diminuta in the intermediate host. Journal of Animal Ecology 50, 941–50.CrossRefGoogle Scholar
Keymer, A. E. & Anderson, R. M. (1979). The dynamics of infection of Tribolium confusum by Hymenolepis diminuta: the influence of infective-stage density and spatial distribution. Parasitology 79, 195207.CrossRefGoogle ScholarPubMed
Khalil, L. F. (1964). On the biology of Macrogyrodactylus polypteri Malmburg, 1956, a monogenetic trematode on Polypterus senegalus in the Sudan. Journal of Helminthology 38, 219–22.CrossRefGoogle ScholarPubMed
Lester, R. J. G. & Adams, J. R. (1974 a). Gyrodactylus alexanderi: reproduction, mortality, and effect on its host Gasterosteus aculeatus. Canadian Journal of Zoology 52, 827–33.CrossRefGoogle ScholarPubMed
Lester, R. J. G. & Adams, J. R. (1974 b). A simple model of a Gyrodactylus population. International Journal for Parasitology 4, 497506.CrossRefGoogle ScholarPubMed
May, R. M. (1974). Stability and Complexity in Model Ecosystems. Monographs in Population Biology 6. 2nd Edn.Princeton University Press.Google Scholar
May, R. M. & Anderson, R. M. (1978). Regulation and stability of hostr-parasite population interactions. II. Destabilizing processes. Journal of Animal Ecology 47, 249–67.CrossRefGoogle Scholar
May, R. M. & Anderson, R. M. (1979). Population biology of infectious diseases: Part II. Nature, London 280, 455–61.CrossRefGoogle ScholarPubMed
McCallum, H. I. (1982). Infection dynamics of Ichthyophthirius multifiliis. Parasitology 85, 475–88.CrossRefGoogle Scholar
Park, T. (1948). Experimental studies of interspecies competition. 1. Competition between populations of the flour beetles, Tribolium confusum Duval and Tribolium castaneum Herbst. Ecological Monographs 18, 267307.CrossRefGoogle Scholar
Pielou, E. C. (1969). An Introduction to Mathematical Ecology. New York: Wiley Interscience.Google Scholar
Scott, M. E. (1982). Reproductive potential of Gyrodactylus bullatarudis (Monogenea) on guppies (Poecilia reticulata). Parasitology 85, 217–36.CrossRefGoogle Scholar
Scott, M. E. & Robinson, M. A. (1984). Challenge infections of Gyrodactylus bullatarudis (Monogenea) on guppies (Poecilia reticulata) following treatment. Journal of Fish Biology 24.CrossRefGoogle Scholar
Stiven, A. E. (1964). Experimental studies on the epidemiology of the host-parasite system. Hydra and Hydramoeba hydroxena (Entz). II. The components of a simple epidemic. Ecological Monographs 34, 119–12.CrossRefGoogle Scholar
Taylor, L. R. (1961). Aggregation, variance and the mean. Nature, London 189, 732–5.CrossRefGoogle Scholar