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      Role of the lymnaeid snail Pseudosuccinea columella in the transmission of the liver fluke Fasciola hepatica in Egypt.

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          Abstract

          Experimental infections of three Egyptian Pseudosuccinea columella populations with sympatric miracidia of Fasciola sp., coming from cattle- or sheep-collected eggs, were carried out to determine the capacity of this lymnaeid to support larval development of the parasite. Using microsatellite markers, the isolates of Egyptian miracidia were identified as Fasciola hepatica. Apart from being independent of snail origin, prevalences ranging from 60.4 to 75.5% in snails infected with five miracidia of F. hepatica were significantly higher than values of 30.4 to 42.2% in snails with bi-miracidial infections. The number of metacercariae ranged from 243 to 472 per cercarial-shedding snail and was independent of snail origin, parasite origin and miracidial dose used for infection. If P. columella was subjected to two successive bi-miracidial infections with F. hepatica, prevalence of infection was 63.3%, with a mean of 311 metacercariae per snail. These values were clearly greater than those already reported for Radix natalensis infected with the same parasite and the same protocol. Successful experimental infection of P. columella with F. hepatica suggests that this lymnaeid snail is an important intermediate host for the transmission of fascioliasis in Egypt.

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          Author and article information

          Journal
          J. Helminthol.
          Journal of helminthology
          Cambridge University Press (CUP)
          1475-2697
          0022-149X
          Nov 2015
          : 89
          : 6
          Affiliations
          [1 ] Department of Zoology, Faculty of Science,University of Tanta,Tanta,Egypt.
          [2 ] INSERM 1094, Faculties of Medicine and Pharmacy,2, rue du Docteur Raymond Marcland,87025Limoges Cedex,France.
          Article
          S0022149X14000406
          10.1017/S0022149X14000406
          24865184

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