Silverfish

The silverfish (Lepisma saccharina) belongs to the order Zygentoma, family Lepismatidae. While primarily considered a household pest, in agricultural settings, it functions as a stored-product pest that thrives in granaries, warehouses, and storage facilities, often going unnoticed due to its nocturnal behavior.

This pest feeds on materials containing starches and polysaccharides. In an agricultural context, it damages stored seeds, flour, processed grain products, and feed. Furthermore, silverfish often destroy paper packaging, which exposes stored commodities to moisture and pathogens, leading to significant deterioration of stock quality.

The life cycle of the silverfish is characterized by direct development, where immature stages look like smaller versions of adults. They are highly sensitive to humidity levels and prefer dark, warm, and moist environments. Their ability to endure long periods of starvation allows them to persist in abandoned or poorly managed storage units.

The economic harm caused by silverfish is mainly associated with the loss of product integrity and the facilitation of fungal growth. By feeding on the outer layers of grain and damaging sacks, they create entry points for secondary pests and molds, effectively reducing the market value and viability of the agricultural products stored.

Protection and control measures focus on environmental modification within the storage facility.

• Maintain relative humidity below 60% to inhibit silverfish breeding.
• Seal structural cracks and crevices where pests harbor.
• Practice rigorous sanitation by removing grain spills.
• Apply professional insecticides on facility surfaces as a last resort.