Geographic information systems in epidemiology - ecology of common vole and distribution of natural foci of tularaemia
2002
Pikula, J. | Treml, F. | Beklova, M. | Holesovska, Z. | Pikulova, J. (Veterinarni a Farmaceuticka Univ., Brno (Czech Republic))
KORMAP geographic information system (GIS) was used to analyse the distribution and selected environmental factors related to population levels of Microtus arvalis in the Czech Republic and the relation between M. arvalis populations and natural foci of tularaemia in the European hare. Maximum population levels of M. arvalis were in areas from 200 to 399 m above sea, of 40 to 60 days of snow cover annually and of 10 deg C of mean annual air temperature. Warm and moderately warm climatic regions significantly differed in the mean M. arvalis population level. The highest and lowest population densities were found in geographic areas of 1800 to 2000 h and up to 1600 h of annual sunshine duration, respectively. M. arvalis population density significantly correlates with the altitude, annual sunshine duration and mean annual air temperature. There is no correlation between M. arvalis levels and numbers of natural foci of tularaemia in the European hare. GIS are suitable for the State Veterinary Administration, for example as a tool for the evaluation of reservoir hosts distribution.
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