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Epidemiology of Toxocara canis in red foxes (Vulpes vulpes) from urban areas of Bristol

  • D. T. Richards (a1), S. Harris (a2) and J. W. Lewis (a1)

Summary

A descriptive epidemiological survey was undertaken of the ascarid nematode Toxocara canis in 521 red foxes (vulpes, vulpes) during the period January 1986 to July 1990. Age–prevalence and age–intensity profiles show that worm are significantly higher in cubs than in subadult or adult foxes and higher in subadult than in adult foxes. variations in worm burdens occur, with the highest prevalences and intensities being found during the spring, when are born, and in the summer months. Prevalences and intensities then decrease during the autumn and winter months both subadult and adult foxes, but, during this period, prevalences are significantly higher in male than in female Variations in worm burdens in the fox population are likely to be related to the reproductive cycle of the fox, with proportion of cubs becoming infected in utero. The role of the fox in the transmission of T. canis in the urban environment is discussed.

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Aguila, C., Cuellar, C., Fenoy, S. & Guillen, J. L. (1987). Comparative study of assays detecting circulating immune complexes and specific antibodies in patients infected with Toxocara canis. Journal of Helminthology 61, 196202.
Beresford-Jones, W. P. (1961). Observations on the helminths of British wild red foxes. Veterinary Record 73, 882–3.
Cook, B. R. (1965). The epidemiology of Echinococcus granulosus in Great Britain. Ph.D. thesis, University of Liverpool, UK.
De Savigny, D. H., Voller, A. & Woodruff, A. W. (1979). Toxocariasis: serological diagnosis by enzyme immunoassay. Journal of Clinical Pathology 32, 284–8.
Edwards, G. T., Hackett, F. & Herbert, I. V. (1979). Taenia hydatigena and Taenia multiceps infections in Snowdonia, UK. II. The role of hunting dogs and foxes as definitive hosts, and of sheep as intermediate hosts. British Veterinary Journal 135, 433–9.
Edwards, M. (1990). Support for city beach dogs ban. South Wales Evening Post, 16 April, p. 5.
Farmer, J. N., Herbert, I. V., Partridge, M. & Edwards, G. T. (1978). The prevalence of Sarcocystis spp. in dogs and red foxes. Veterinary Record 102, 7880.
Hackett, F. & Walters, T. M. H. (1980). Helminths of the red fox in Mid-Wales. Veterinary Parasitology 7, 181–4.
Harris, S. (1977). Distribution, habitat utilization and age structure of a suburban fox (Vulpes vulpes) population. Mammal Review 7, 2539.
Harris, S. (1978). Age determination in the Red fox (Vulpes vulpes) an evaluation of technique efficiency as applied to a sample of suburban foxes. Journal of Zoology 184, 91117.
Harris, S. (1981). An estimation of the number of foxes (Vulpes vulpes) in the city of Bristol, and some possible factors affecting their distribution. Journal of Applied Ecology 18, 455–65.
Harris, S. & Rayner, J. M. V. (1986). A discriminant analysis of the current distribution of urban foxes (Vulpes vulpes) in Britain. Journal of Animal Ecology 55, 605–11.
Harris, S. & Smith, G. C. (1987). Demography of two urban fox (Vulpes vulpes) populations. Journal of Applied Ecology 24, 7586.
Harris, S. & Woollard, T. (1991). Bristol's foxes. Proceedings of the Bristol Naturalists' Society 48, 315.
Hodgkinson, N. (1988). Park danger to children from dog parasite that can blind. The Sunday Times, 21 August, p. A5.
Jacobs, D. E., Pegg, E. J. & Stevenson, P. (1977). Helminths of British dogs: Toxocara canis – a veterinary perspective. Journal of Small Animal Practice 18, 7992.
Knapen, F., Leusden, J., Polderman, A. M. & Franchimont, J. H. (1983). Visceral larva migrans: examinations by means of enzyme-linked immunosorbent assay of human sera for antibodies to the second-stage larvae of Toxocara canis. Zeitschrift für Parasitenkunde 69, 113–18.
Lloyd, H. G. (1980). The Red Fox. London: Batsford.
Loos-Frank, B. & Zeyhle, E. (1982). The intestinal helminths of the red fox and some other carnivores in South-West Germany. Zeitschrift für Parasitenkunde 67, 99113.
Macdonald, D. W. & Newdick, M. T. (1982). The distribution and ecology of foxes, Vulpes vulpes (L.), in urban areas. In Urban Ecology (ed. Bornkamm, R., Lee, J. A. & Seaward, M. R. D.), pp. 123–35. Oxford: Blackwell Scientific Publications.
Martinez, F., Hernandez, S., Calero, R. & Moreno, T. (1978). Contribución al conocimiento de los parásitos del zorro (Vulpes vulpes). Revista Ibérica de Parasitologia 38, 207–11.
Mowbray, P. (1989). Foul play. The Sunday Times (Suppl.), 24 September, pp. L1216.
Page, A. P., Richards, D. T., Lewis, J. W., Omar, H. M. & Maizels, R. M. (1991). Comparison of isolates and species of Toxocara and Toxascaris by biosynthetic labelling of somatic and ES proteins from infective larvae. Parasitology 103, 451–64.
Pullar, E. M. (1946). A survey of Victorian canine and vulpine parasites IV. Nematoda. Australian Veterinary Journal 22, 8591.
Quinn, R., Smith, H. V., Bruce, R. G. & Girdwood, R. W. A. (1980). Studies on the incidence of Toxocara and Toxascaris spp. ova in the environment. 1. A comparison of flotation procedures for recovering Toxocara spp. ova from soil. Journal of Hygiene 84, 83–9.
Richards, D. T. (1991). The epidemiology of the ascarid nematode Toxocara canis and other intestinal helminths in the red fox (Vulpes vulpes). Ph.D. thesis, University of London.
Ross, J. G. & Fairley, J. S. (1969). Studies of disease in the red fox (Vulpes vulpes) in Northern Ireland. Journal of Zoology 157, 375–81.
Teagle, W. G. (1967). The fox in the London suburbs. London Naturalist 46, 4468.
Trewhella, W. J. & Harris, S. (1988). A simulation model of the pattern of dispersal in urban fox (Vulpes vulpes) populations and its applications for rabies control. Journal of Applied Ecology 25, 435–50.
Watkins, C. V. & Harvey, L. A. (1942). On the parasites of silver foxes on some farms in the South-West. Parasitology 34, 155–79.
Williams, B. M. (1976). The intestinal parasites of the red fox in South-West Wales. British Veterinary Journal 132, 309–12.

Keywords

Epidemiology of Toxocara canis in red foxes (Vulpes vulpes) from urban areas of Bristol

  • D. T. Richards (a1), S. Harris (a2) and J. W. Lewis (a1)

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