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Recovery of Fascioloides magna (Digenea) population in spite of treatment programme? Screening of Galba truncatula (Gastropoda, Lymnaeidae) from Lower Austria

Authors
Journal
Veterinary Parasitology
0304-4017
Publisher
Elsevier
Publication Date
Volume
187
Identifiers
DOI: 10.1016/j.vetpar.2012.01.032
Keywords
  • Digenea
  • Trematoda
  • Fascioloides Magna
  • Fasciola Hepatica
  • Galba Truncatula
  • Intermediate Hosts
  • Prevalence
  • Snails
  • Austria
Disciplines
  • Biology

Abstract

Abstract During the past decade, Fascioloides magna, the large American liver fluke, has spread within free-living deer in wetlands of the Danube in Lower Austria. The aim of this study was to determine the current infection rates with F. magna and other digenean parasites in the intermediate host snail Galba truncatula from risk areas in Lower Austria. A total of 3444 G. truncatula were collected and examined microscopically for the presence of digenean trematodes. A set of randomly selected snails and isolated trematode stages were also investigated molecular biologically by PCR and sequencing. Digenean parasites were detected with a prevalence of 2.41% (1.83% Paramphistomoidea; 0.46% Echinostomatoidea; 0.09% Strigeida; 0.06% Plagiorchiida). F. magna was found with an overall prevalence of 0.23%, which may indicate a recovery of the parasite population in spite of an ongoing triclabendazole treatment programme. Moreover, high risk areas and a seasonality of infections were observed.

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