Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-22T06:01:42.231Z Has data issue: false hasContentIssue false
  • English
  • Français

The development of rediae of Fasciola hepatica in Radix natalensis subjected twice to bimiracidial exposures

Published online by Cambridge University Press:  08 September 2010

Y. Dar ,
P. Vignoles ,
G. Dreyfuss  and
D. Rondelaud
Y. Dar
Affiliation:
Department of Zoology, Faculty of Science, University of Tanta, Tanta, Egypt UPRES EA no. 3174, Faculties of Medicine and Pharmacy, 87025Limoges, France
P. Vignoles
Affiliation:
UPRES EA no. 3174, Faculties of Medicine and Pharmacy, 87025Limoges, France
G. Dreyfuss*
Affiliation:
UPRES EA no. 3174, Faculties of Medicine and Pharmacy, 87025Limoges, France
D. Rondelaud
Affiliation:
UPRES EA no. 3174, Faculties of Medicine and Pharmacy, 87025Limoges, France
*
*Fax: 33 555 435863 E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Experimental infections of Egyptian Radix natalensis with a French isolate of Fasciola hepatica (each snail was subjected twice to a bimiracidial exposure) were carried out to determine how many sporocysts grew in these snails and to study the developmental patterns of redial generations. Single-sporocyst infections were found in 69.3% (34/49) of infected snails, with equivalent numbers of normal and abnormal patterns. Snails with two- and three-sporocyst infections were 24.4% and 6.1%, respectively. In single- and two-sporocyst infections at days 42 and 56 post-exposure, the total redial burden was significantly higher in snails with a normal redial development. In two- and three-sporocyst infections, the overall maturity of rediae was delayed at days 42 and 56. The high frequency of abnormal patterns in R. natalensis (53.1% of all infected snails showed degeneration of a first mother redia) might be due to incomplete adaptation between the snail population and the parasite. The delayed redial maturity in two- and three-sporocyst infections can mainly be explained by the volume of the snail body, which would be insufficient to allow the simultaneous differentiation of most rediae over time.

Type
Regular research papers
Information
Journal of Helminthology , Volume 85 , Issue 2 , June 2011 , pp. 210 - 214
Copyright
Copyright © Cambridge University Press 2010

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

Augot, D. & Rondelaud, D. (2001) Cercarial productivity of Fasciola hepatica in Lymnaea truncatula during a usual or an unusual development of redial generations. Parasitology Research 87, 631–633.Google ScholarPubMed
Augot, D., Rondelaud, D., Dreyfuss, G., Cabaret, J., Bayssade-Dufour, C. & Albaret, J.L. (1998) Characterization of Fasciola hepatica redial generations (Trematoda: Fasciolidae) by morphometry and chaetotaxy under experimental conditions. Journal of Helminthology 72, 193–198.CrossRefGoogle ScholarPubMed
Boray, J.C. (1978) The potential impact of exotic Lymnaea spp. on fascioliasis in Australasia. Veterinary Parasitology 4, 127–141.CrossRefGoogle Scholar
Bouix-Busson, D. & Rondelaud, D. (1986) L'infestation de Lymnaea glabra Müller par Fasciola hepatica L. Etude expérimentale sur le terrain. Annales de Parasitologie Humaine et Comparée 61, 215–225.CrossRefGoogle Scholar
Brown, D.S. (1994) Freshwater snails of Africa and their medical importance. 606 pp. London, Taylor & Francis Ltd.CrossRefGoogle Scholar
Dar, Y., Djuikwo Teukeng, F.F., Vignoles, P., Dreyfuss, G. & Rondelaud, D. (2010) Radix natalensis (Gastropoda: Lymnaeidae), a potential intermediate host of Fasciola hepatica in Egypt. Parasite (in press).CrossRefGoogle ScholarPubMed
Dreyfuss, G., Moukrim, A., Rondelaud, D. & Vareille-Morel, C. (1994) Several field observations concerning infection of Lymnaea palustris by Fasciola hepatica. Journal of Helminthology 68, 115–118.CrossRefGoogle ScholarPubMed
Hubendick, B. (1951) Recent Lymnaeidae. Their variation, morphology, taxonomy, nomenclature, and distribution. Kungliga Svenska Vetenskapsakademiens Handlingar 3, 1–223.Google Scholar
Kendall, S.B. (1949) Nutritional factors affecting the rate of development of Fasciola hepatica in Limnaea truncatula. Journal of Helminthology 23, 179–190.CrossRefGoogle Scholar
Ollerenshaw, C.B. (1971) Some observations on the epidemiology of fascioliasis in relation to the timing of molluscicide applications in the control of the disease. The Veterinary Record 88, 152–164.CrossRefGoogle Scholar
Periago, M.V., Valero, M.A., El Sayed, M., Ashrafi, K., El Wakeel, A., Mohamed, M.Y., Desquesnes, M., Curtale, F. & Mas-Coma, S. (2008) First phenotypic description of Fasciola hepatica/Fasciola gigantica intermediate forms from the human endemic area of the Nile Delta, Egypt. Infection, Genetics and Evolution 8, 51–58.CrossRefGoogle ScholarPubMed
Rondelaud, D. & Barthe, D. (1982a) Les générations rédiennes de Fasciola hepatica L. chez Lymnaea truncatula Müller. A propos des effets de plusieurs facteurs. Annales de Parasitologie Humaine et Comparée 57, 245–262.CrossRefGoogle Scholar
Rondelaud, D. & Barthe, D. (1982b) Les générations rédiennes de Fasciola hepatica L. chez Lymnaea truncatula Müller. Pluralité des schémas de développement. Annales de Parasitologie Humaine et Comparée 57, 639–642.CrossRefGoogle Scholar
Rondelaud, D., Vignoles, P. & Dreyfuss, G. (2004) Fasciola hepatica: the developmental patterns of redial generations in naturally-infected Galba truncatula. Parasitology Research 94, 183–187.CrossRefGoogle ScholarPubMed
Rondelaud, D., Fousi, M., Vignoles, P., Moncef, M. & Dreyfuss, G. (2007) Optimization of metacercarial production for three digenean species by the use of Petri dishes for raising lettuce-fed Galba truncatula. Parasitology Research 100, 861–865.CrossRefGoogle ScholarPubMed
Rondelaud, D., Belfaiza, M., Vignoles, P., Moncef, M. & Dreyfuss, G. (2009a) The redial generations of Fasciola hepatica: a review. Journal of Helminthology 83, 245–254.CrossRefGoogle ScholarPubMed
Rondelaud, D., Vignoles, P. & Dreyfuss, G. (2009b) La Limnée tronquée, un mollusque d'intérêt médical et vétérinaire. 283 pp. Limoges, PULIM.Google Scholar
Stat-Itcf (1988) Manuel d'utilisation. 210 pp. Boigneville, Institut technique des céréales et des fourrages, Service des études statistiques.Google Scholar