Eurasian pygmy shrew

The Eurasian pygmy shrew (Sorex minutus) is a small insectivorous mammal belonging to the family Soricidae. Often mistaken for a mouse, this creature is a highly active predator that inhabits agricultural lands and gardens, interacting significantly with the topsoil layers.

While their diet consists mainly of invertebrates such as larvae, beetles, and earthworms, their foraging activity can negatively impact various plant species. When they tunnel through seedbeds or young plantings, they disturb the soil structure and expose the fragile root systems of young vegetables and seedlings.

The biology of the pygmy shrew is characterized by an extremely high metabolic rate, requiring it to forage constantly throughout the day and night. They remain active year-round without hibernation. Their breeding season spans from spring to autumn, which allows populations to recover quickly in nutrient-rich agricultural environments.

The damage caused is largely indirect but detrimental. By tunneling just beneath the surface, they create air pockets around roots, leading to dehydration and necrosis of the plant. Their habit of consuming earthworms also depletes the soil of beneficial organisms responsible for maintaining soil health and aeration.

To control the population of these animals, agronomic practices should focus on preventive measures. This includes keeping garden perimeters clear of tall weeds, using underground mesh barriers to prevent soil excavation, and employing ultrasonic devices. Chemical baits are rarely effective due to their preference for live prey, making mechanical protection the preferred strategy.