Abstract
The tapeworm Moniezia expansa and naturally infected sheep were investigated with respect to their lead accumulation. Lead—Pb(CH3COO)2 was added to the distilled water and administered orally to the sheep every day for a period of 1 week. After the exposure period the sheep were killed and the metal levels were determined in the muscle, liver, kidney and blood of the sheep as well as in the cestode parasites (Moniezia expansa). The impact of an infection with the cestode Moniezia expansa and a simultaneous Pb exposure, on the concentrations of heavy metals in the host kidney, liver, muscle, blood and cestodes was studied. The concentration of lead in the cestodes was on average 458, 5 and 4-fold higher in the cestodes than in the muscle, liver and kidney of the host, respectively. Parasitised sheep accumulated significantly less lead in their tissues than their uninfected conspecifics (ANOVA test, P ≤ 0.05). Also the differences between host′s tissues and tapeworms were found to be significant (ANOVA test, P ≤ 0.05). Thus, this study reveals that lead accumulation also occurs in cestodes parasitizing mammals. The host-parasite-system sheep-Moniezia expansa appears to be a useful and promising bioindication system especially in farming (rural, agricultural) and the natural ecosystem.
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Acknowledgements
This study was supported by a project no. MSM 6046070901 provided by the Ministry of Education, Youths and Sports and by a project no. MZE 0002701404. Performed experiments comply with current laws of the Czech Republic.
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Jankovská, I., Vadlejch, J., Száková, J. et al. Experimental studies on the lead accumulation in the cestode Moniezia expansa (Cestoda: Anoplocephalidae) and its final host (Ovis aries). Ecotoxicology 19, 928–932 (2010). https://doi.org/10.1007/s10646-010-0474-3
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DOI: https://doi.org/10.1007/s10646-010-0474-3