Paramphistomum daubneyi: characteristics of infection in three lymnaeid species

Parasite

and J. Romero²  D. Rondelaud¹  G. Dreyfuss¹  P. Vignoles¹  A. Mekroud³  A. Titi³  R. Sanabria² 

[1] INSERM U 1094, Faculties of Medicine and Pharmacy,87025 Limoges,France;CEDIVE, Fac. Cs. Veterinarias, Universidad Nacional de La Plata,Alvear 803,(7130), Chascomús, Buenos Aires,Argentina;PADESCA Laboratory, Department of Veterinary Sciences, University Mentouri Constantine,25100 El Khroub,Algeria

关键词: redia;    metacercaria;    experimental infection;    Paramphistomum daubneyi;    Lymnaea viatrix;    Lymnaea neotropica;    Galba truncatula;   

Others  :  808747
DOI  :  doi:10.1051/parasite/2012194445

 received in 2012-05-05, accepted in 2012-07-30,  发布年份 2012

【 摘 要 】

Experimental infections of two South American lymnaeids (Lymnaea neotropica and L. viatrix var. ventricosa) with Paramphistomum daubneyi were carried out to determine if these snail species could sustain larval development of this digenean and, if so, to specify their potential for cercarial production. A French population of Galba truncatula infected and raised according to the same protocol served as controls. In both experiments, prevalence of P. daubneyi infections in snails did not significantly differ from each other. In snail groups evaluated for cercarial shedding (first experiment), a significantly lower number of shed cercariae was noted for L. neotropica, while those from G. truncatula and L. v. ventricosa did not differ significantly from each other. Dissection of infected snails at day 65 post-exposure at 20 °C (second experiment) found significantly lower burdens of P. daubneyi rediae and cercariae in the bodies of L. neotropica than in those of G. truncatula and L. v. ventricosa. Compared to total cercarial production observed in dissected snails, the percentage of cercariae which exited from snails was 75.6% for G. truncatula, 21.6% for L. neotropica, and 91.4% for L. v. ventricosa. This last species seems to be a good candidate for metacercarial production of P. daubneyi.

【 授权许可】

   
© PRINCEPS Editions, Paris, 2012

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