House mouse

Systematic position: The house mouse (Mus musculus) belongs to the order Rodentia and the family Muridae. It is a highly adaptable rodent species that has become a major agricultural pest globally, successfully colonizing both indoor storage facilities and vast open fields where it compromises agricultural productivity.

Biology and life cycle: The species is characterized by an exceptional reproductive rate. In favorable environments, house mice breed year-round, with females producing several litters annually. Each litter typically contains 5 to 10 offspring, and maturation occurs rapidly within a few weeks, allowing populations to reach high density levels in very short timeframes.

Host crops and damage: House mice feed on a wide range of agricultural products, including cereal grains, oilseeds, and vegetables. They damage crops at various stages: consuming seeds immediately after sowing, destroying emerging seedlings, and feeding on standing crops. In storage facilities, they consume stored grain and contaminate large volumes of product with waste, reducing its market value.

Economic impact: The damage caused by Mus musculus is twofold: direct yield loss and economic loss due to crop degradation. In orchards, they frequently girdle the bark of fruit trees during winter, which can lead to the death of entire plantations. Furthermore, they are significant vectors of various zoonotic pathogens, posing a health risk to livestock and farm workers.

Protection measures: Effective management relies on integrated pest management (IPM) strategies to suppress rodent numbers:

• Removing crop residues and controlling weeds to eliminate shelter and food sources.
• Strategic application of approved rodenticides in accordance with local regulations.
• Installing mechanical barriers or protective wraps around young tree trunks.
• Deep tillage of fields to disrupt nesting sites and tunnel systems.
• Encouraging natural predators such as birds of prey through farm landscape management.