First Online: 31 March 2018. Creative Commons Attribution 4.0 International License. Artykuł jest również dostępny w wersji elektronicznej. Supported by the project: ‘Environmental protection against parasitozoonoses under the influence of global climate and social changes‘ of the Research & Development Operational Programme funded by the ERDF (0.4). This project was also funded by VEGA under the grant approved by the Scientific Grant Agency of the Ministry of Education of the Slovak Republic and the Slovak Academy Sciences, Grant No. 1/0417/14 (0.4), 1/0311/15, and 2/0141/16, Ministry of Education Agency for structural funds of EU in frame of Project No. 26220120055; Slovak Research and Development Agency, |