Fox faeces and vole distribution on a local range: ecological data in a parasitological perspective for Echinococcus...

Area of Science:

• Veterinary parasitology
• Ecology
• Epidemiology

Background:

• Echinococcus multilocularis is a parasite requiring intermediate hosts (voles) and definitive hosts (foxes) for its life cycle completion.
• Spatial overlap between fox feces and intermediate hosts is crucial for parasite transmission.
• Understanding factors influencing this overlap is key to controlling Echinococcus multilocularis.

Purpose of the Study:

• To investigate factors influencing the spatial overlap between fox feces and vole populations in northeastern France.
• To determine the predictive power of habitat, climate, and vole density on fox fecal distribution.

Main Methods:

• Kilometric transects were used to collect fox feces.
• Vole relative densities were estimated using surface indices.
• Habitat and climatic variables were recorded along transects.

Main Results:

• Habitat and climatic conditions were the primary predictors of fox fecal density.
• Vole densities (Microtus sp.) showed no predictive power for fox fecal distribution.
• Both vole and fox fecal densities were higher in medium-height vegetation edges.

Conclusions:

• Habitat and climate are more critical than vole density in determining Echinococcus multilocularis transmission hotspots.
• Management strategies should focus on landscape features influencing fox behavior and parasite deposition.
• Understanding these ecological factors is vital for assessing and mitigating human exposure risks.