Effect of Accumulation of Heavy Metals in the Red Fox Intestine on the Prevalence of Its Intestinal Parasites
Department of Food Analysis and Chemistry, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
Infrastructure Department, Mendel University in Brno, 61300 Brno, Czech Republic
Department of Morphology, Physiology and Animal Genetics, Mendel University in Brno, 61300 Brno, Czech Republic
Institute for Teacher Training, Constantine the Philosopher University in Nitra, 949 74 Nitra, Slovakia
Department of Microelectronics, Brno University of Technology, 616 00 Brno, Czech Republic
Author to whom correspondence should be addressed.
Received: 19 November 2019 / Revised: 16 February 2020 / Accepted: 19 February 2020 / Published: 21 February 2020
(This article belongs to the Section Wildlife
Heavy metal pollution of environmental ecosystems has become rather a significant factor in assessing them, as heavy metals can significantly influence animal health. The objective of this study was to examine a possible association between contents of selected heavy metals such as cadmium, copper, lead, chrome, zinc, and manganese in intestines of foxes and between prevalence of fox intestinal parasites. The association was not fully proven. On the contrary, sensitivity of parasites to cadmium was demonstrated; with increasing cadmium content in the intestine of the host, prevalence of parasites decreased to zero. No parasites were found in the intestine, when concentration of accumulated cadmium exceeded the level of 0.05 milligrams per kilogram, which represents the limit for meat (excluding offal) of bovine animals, sheep, pig, and poultry according to the Regulation (EU) No. 488/2014 amending the Regulation (EC) No. 1881/2006). Thus, even cadmium content below the above limit showed an impact on parasite biodiversity.