Gray-red vole

The gray-red vole (Clethrionomys rufocanus) belongs to the order Rodentia and the family Cricetidae. As a highly adaptable forest-dwelling rodent, it frequently encroaches upon agricultural areas, orchards, and forest nurseries, causing significant damage to woody vegetation and crops located near forest edges.

This species primarily damages woody plants, with a strong preference for the bark of fruit trees such as apple, pear, and rowan. Furthermore, it poses a severe threat to young seedlings in nurseries, where it consumes the cambium and root systems. In late autumn and winter, they may also target various vegetable crops stored near the ground or in low-lying fields.

The biology of the gray-red vole is marked by rapid reproductive cycles and high activity levels throughout the year. They typically nest in areas with dense vegetation, forest litter, or beneath rocky outcrops. Population dynamics are highly volatile; in years with optimal food availability and mild winters, these rodents can reach high densities, leading to widespread damage to local flora.

Damage is most visible during the winter months when snow cover protects them from predators. They feed by gnawing the bark of trees, often girdling the trunk, which disrupts the transport of nutrients and water. This girdling can easily kill young trees, while older specimens suffer from stunted growth and increased susceptibility to fungal diseases and secondary pests.

• Maintain clean garden borders to reduce nesting habitats.
• Install metal or plastic guards around tree trunks.
• Clear fallen leaves and debris near tree bases in autumn.
• Employ biological control agents or predators like owls.
• Use rodenticides strictly according to local agricultural guidelines.

Effective management requires an integrated approach. Physical exclusion, such as trunk wrapping, is the most reliable method for individual trees. Additionally, promoting local biodiversity to encourage natural predators is recommended. Chemical interventions should only be considered as a last resort in professional settings, ensuring minimal environmental impact.