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Effect of anthelmintic baits on prevalence of Echinococcus multilocularis at red fox in CR
Brožová, Adéla ; Jankovská, Ivana (advisor) ; Bejček, Vladimír (referee)
In 2012 the tapeworm Echinococcus multilocularis in naturally infected red fox were investigated in selected regions of Karlovy Vary. From January to December 2013, in areas with the highest prevalence, delivery baits containing the anthelmintic (80 g of fish flesh + 50 mg Praziquantel- Drontal plus flavour) in an amount of 50 baits per km2. In 2014 the inspection was carried out investigations and subsequent comparison prevalence of tapeworm in the monitored areas between 2012 and 2014, ie. before and after the delivery of anthelmintic baits. The observed prevalence of Echinococcus multilocularis in foxes before delivery baits was 80% (12/15), after delivery baits was 10.5% (2/19). Furthermore, an analysis of infected intestinal tissue foxes and foxes uninfected with Echinococcus multilocularis for determining the concentrations of selected elements (Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn). Foxes with this tapeworm exhibited in the intestinal mucosa higher levels of the following elements: chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), zinc (Zn). Conversely concentration primarily toxic elements (Cd and Pb) in the intestine infected foxes with Echinococcus multilocularis was lower than in the intestine foxes without this parasite.
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