Hostname: page-component-7479d7b7d-qs9v7 Total loading time: 0 Render date: 2024-07-09T15:15:01.688Z Has data issue: false hasContentIssue false
  • English
  • Français

Variability of Fasciola infections in Lymnaea truncatula as a function of snail generation and snail activity

Published online by Cambridge University Press:  05 June 2009

D. Rondelaud  and
G. Dreyfuss
D. Rondelaud
Affiliation:
Faculté de Médecine, Laboratoire d'Histopathologie Parasitaire, 2, rue du Docteur Raymond Marcland, 87025 Limoges Cedex, France:
G. Dreyfuss
Affiliation:
Faculté de Pharmacie, Laboratoire de Parasitologie, 2, rue du Docteur Raymond Marcland, 87025 Limoges Cedex, France
Get access Rights & Permissions [Opens in a new window]

Abstract

Field investigations were carried out over a 4-year period in three farms of the Haute-Vienne department (France) in order to determine the prevalence of Fasciola hepatica infection in the annual generations of Lymnaea truncatula. Infection rates found in March were significantly lower than those recorded in July or in September (0.8% to 2.2% compared to 5.7% to 13.5% and 4.4% to 9.3%, respectively). They were always lower in overwintering snails than in other snail generations (summer generation in 1989,1990 and 1991; spring and summer generations in 1992). Experimental infections of L. truncatula by F. hepatica were performed to evaluate the characteristics of Fasciola infection with reference to snail generation and snail activity. Survival of summer generation snails at day 30 postexposure was significantly lower in snails collected in September than in those collected in May and June. In the winter generation of L. truncatula, snail survival was significantly higher in snails collected from December to March than in those from November. The prevalence of infection was significantly lower in snails collected in September (summer generation) than in those collected from December to March (winter generation). The duration of the prepatent period was significantly delayed in snails collected from January to March (a mean of 54.2 to 58.2 days instead of 43.1 to 49 days in the other groups), whereas that of the patent period was significantly shorter (5 to 9.3 days instead of 18.3 to 40.3 days, respectively). In snails collected from January to March, the number of metacercariae was significantly lower than that found from other snail groups (a mean of 21.5 to 42 metacercariae instead of 72.8 to 151.4 cysts, respectively). Fasciola infections of L. truncatula originating from spring and summer generations were more efficient than those from the winter generation of snails.

Type
Research Papers
Information
Journal of Helminthology , Volume 71 , Issue 2 , June 1997 , pp. 161 - 166
Copyright
Copyright © Cambridge University Press 1997

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

Boray, J.C. (1969) Experimental fascioliasis in Australia. Advances in Parasitology 7, 95–210.CrossRefGoogle ScholarPubMed
Dreyfuss, G., Vareille-Morel, C. & Rondelaud, D. (1996) Fasciola hepatica: characteristics of Fasciola infection in Lymnaea truncatula as a function of miracidia number or snail height at exposure. Abstracts, VI European Multicolloquium of Parasitology, Parma (Italy), 1996, A5.09. Parassitologia 38, 71.Google Scholar
Gold, D. (1980) Growth and survival of the snail Lymnaea truncatula: effects of soil type, culture medium and Fasciola hepatica infection. Israel Journal of Zoology 29, 163–170.Google Scholar
Hourdin, A., Rondelaud, D. & Cabaret, J. (1993) The development of Fasciola hepatica parthenitae in Lymnaea truncatula by modification of Muellerius capillaris infection. International Journal for Parasitology 23, 235–243.CrossRefGoogle ScholarPubMed
Moens, R. (1991) Factors affecting Lymnaea truncatula populations and related control measures. Journal of Medical and Applied Malacology 3, 73–84.Google Scholar
Morel-Vareille, C. (1973) Contribution ` l'étude du cycle biologique de Lymnaea truncatula dans le Nord-ouest du Limousin. Revue de Médecine Vétérinaire 124, 1447–1457.Google Scholar
Ollerenshaw, C.B. (1971) Some observations on the epidemiology of fascioliasis in relation to the timing of molluscicide application in the control of the disease. Veterinary Record 88, 152–164.CrossRefGoogle Scholar
Ollerenshaw, C.B. & Smith, L.P. (1969) Meteorological factors and forecasts of helminthic disease. Advances in Parasitology 1, 288–323.Google Scholar
Roberts, E.W. (1950) Studies on the life-cycle of Fasciola hepatica (Linnaeus) and of its snail host, Limnaea (Galba) truncatula Müller in the field and under controlled conditions. Annals of Tropical Medicine and Parasitology 44, 187–206.CrossRefGoogle Scholar
Rondelaud, D. (1974) L'évolution des rédies de Fasciola hepatica L. chez Galba truncatula Müller en Limousin. Revue de Médecine Vétérinaire 125, 237–250.Google Scholar
Rondelaud, D. (1978) Contribution à l'érude écologique de Lymnaea (Galba) truncatula Müller, vecteur de Fasciola hepatica L. Recherche de moyens de lutte biologique en Limousin. Doctorate Thesis, Limoges, France, no. 4, 302 pp.Google Scholar
Rondelaud, D. (1994) Fasciola hepatica: the infection rate and the development of redial generations in Lymnaea truncatula exposed to miracidia after experimental desiccation and activation in water. Journal of Helminthology 68, 63–66.CrossRefGoogle ScholarPubMed
Stat-Itcf (1988) Manuel d'utilisation. Institut Technique des Céréales et des Fourrages, Service des Études Statistiques, Boigneville.Google Scholar