Bulb mite

Systematic position. Aleuroglyphus ovatus belongs to the class Arachnida, order Acariformes, family Acaridae. It is a well-known stored product mite that causes significant economic losses by infesting agricultural commodities in storage facilities globally.

Infested commodities. This pest primarily targets stored grains, including wheat, barley, and corn, as well as flour, cereal products, and oilseeds. Furthermore, it can thrive in environments containing dried fruits, medicinal herbs, powdered milk, and various processed animal feeds, making it a versatile threat to storage facilities.

Biology and life cycle. The life cycle of Aleuroglyphus ovatus is highly dependent on environmental factors, particularly moisture and temperature. Development is rapid when the substrate moisture content exceeds 15%. Under optimal conditions, the mite progresses through several stages: egg, larva, protonymph, deutonymph, and adult. It can also produce a resistant stage known as a hypopus to survive harsh environments.

Nature of damage and harm. The mites primarily attack the grain germ, significantly reducing germination rates and overall quality. Infested commodities become contaminated with feces, exuviae, and dead mites, which promote the growth of molds and bacteria. This often triggers grain mass self-heating and decay, rendering the entire batch unfit for consumption or industrial processing.

Control measures. Protecting stored goods requires strict moisture management, keeping grain moisture levels below 13% and temperatures low. Integrated pest management strategies include:

• Thorough cleaning and sanitation of storage areas and equipment.
• Use of approved fumigants to eliminate existing mite populations.
• Continuous monitoring using sampling techniques to detect early infestation signs.