Fig. 4.

Spatiotemporal distribution of red foxes with mange-like lesions based on a multi-year questionnaire survey. The maps illustrate the districts of surveillance in Switzerland reporting foxes (Vulpes vulpes) with and without mange-like lesions per period. Pie charts represent the total country surface area of Switzerland and show the percentage of the total area corresponding to districts with reported occurrence or absence of mange-like lesions in foxes, or which did not reply to the questionnaire survey. Biogeographical subregions are delimited by black lines. Abbreviation: MLL, mange-like lesions