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Media type:
E-Article
Title:
The experimental production of Fasciola hepatica metacercariae from three aquatic populations of Galba truncatula
Contributor:
Vignoles, P.;
Favennec, L.;
Rondelaud, D.;
Dreyfuss, G.
imprint:
Cambridge University Press (CUP), 2003
Published in:Journal of Helminthology
Language:
English
DOI:
10.1079/joh2003177
ISSN:
1475-2697;
0022-149X
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title><jats:p>Laboratory investigations on three aquatic populations of <jats:italic>Galba truncatula</jats:italic>, originating from the Peruvian Altiplano and French Massif Central, were carried out during three successive snail generations to determine if these populations might be successfully used for the metacercarial production of <jats:italic>Fasciola hepatica</jats:italic> under experimental conditions. High numbers of surviving snails at day 30 post-exposure (>70%), high prevalences of <jats:italic>F. hepatica</jats:italic> infections (>60%), and prolonged productions of cercariae for a mean period of 35 to 47 days were observed in the three populations, whatever the snail generation. In the Peruvian population, metacercariae of <jats:italic>F. hepatica</jats:italic> significantly decreased in numbers from a mean of 251 in the parent snails to 124 per snail in the F<jats:sub>2</jats:sub> generation, whereas no significant variation was observed in the two French populations. As these aquatic snails rarely emerged out of water, the use of these populations for the commercial production of <jats:italic>F. hepatica</jats:italic> metacercariae was of great interest, because the daily time spent watching the breeding boxes of snails was clearly shorter, thereby reducing the cost of producing metacercariae compared with using amphibious snails reared with romaine lettuce.</jats:p>