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Article Dans Une Revue Journal of Helminthology Année : 2013

Lymnaea neotropica and Lymnaea viatrix, potential intermediate hosts for Fascioloides magna.

R. Sanabria
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Roselyne Mouzet
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J. Pankrác
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Félicité Djuikwo-Teukeng
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Bertrand Courtioux
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A. Novobilský
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J. Höglund
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M. Kašný
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Philippe Vignoles
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Gilles Dreyfuss
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Daniel Rondelaud
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Résumé

Experimental infections of two South American lymnaeid populations with Fascioloides magna were carried out to determine whether these snails may sustain larval development of this digenean and, if so, to quantify their potential for cercarial production. The reference group was a French population of Galba truncatula infected and raised according to the same protocol. According to the internal transcribed sequence (ITS)-1 segment of their genomic rDNA, these South American populations were identified as Lymnaea neotropica (origin, Argentina) and Lymnaea viatrix var. ventricosa (origin, Uruguay). In the snail groups followed for cercarial shedding, longer prepatent periods and lower numbers of shed cercariae were noted in South American lymnaeids. In other snails dissected at day 65 post-exposure, the redial and cercarial burdens of F. magna found in the bodies of L. neotropica and L. v. ventricosa were significantly lower than those noted in G. truncatula. Compared to the total cercarial production noted in the dissected snails, the percentage of cercariae that exited from snails was 51.3% for G. truncatula, 32.2% for L. neotropica and 46.8% for L. v. ventricosa. The two South American species of snails can thus be considered as potential intermediate hosts of F. magna.
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Dates et versions

hal-00934041 , version 1 (21-01-2014)

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R. Sanabria, Roselyne Mouzet, J. Pankrác, Félicité Djuikwo-Teukeng, Bertrand Courtioux, et al.. Lymnaea neotropica and Lymnaea viatrix, potential intermediate hosts for Fascioloides magna.. Journal of Helminthology, 2013, 87 (4), pp.494-500. ⟨10.1017/S0022149X12000582⟩. ⟨hal-00934041⟩

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