Schreibers's long-fingered bat

Systematic position: Schreibers's long-fingered bat (Miniopterus schreibersii) is a mammal belonging to the order Chiroptera and the family Miniopteridae. In professional agronomy, this species is categorized as a pest in specific agricultural contexts where its colony presence near high-value crop storage or orchards poses sanitary risks.

Affected crops and damage: The damage caused by this species is primarily indirect. It does not feed on vegetation but affects orchard crops and vegetables by depositing guano on produce. This contamination leads to surface damage, lowers the aesthetic quality of the yield, and complicates the washing and sorting processes.

Biology and life cycle: These bats are highly social animals that congregate in large colonies. Their lifecycle involves seasonal migration patterns. During these migrations, they may roost in barns, warehouses, or processing sheds, where their high metabolic activity and large group size create significant sanitary challenges for the agricultural operator.

Pest significance: The main economic harm is associated with the degradation of food safety standards. The presence of guano creates an environment conducive to mold growth on fruit surfaces. Additionally, the constant movement of large colonies in proximity to ripening crops can cause physical injury to delicate stems and leaves, potentially reducing overall plant vigor.

Control measures: Management of this species focuses on exclusion and non-lethal deterrence to protect storage facilities:

• Sealing all points of entry in warehouses and agricultural buildings.
• Using high-frequency ultrasonic deterrents to keep bats away from processing areas.
• Installing mesh netting over ventilation ducts to prevent colonization.
• Maintaining rigorous sanitation protocols to remove biological waste immediately from storage sites.