Bulb mite Moniezi

Systematic position: Caloglyphus moniezi is classified under the phylum Arthropoda, class Arachnida, order Acariformes, and family Acaridae. These microscopic organisms are recognized as significant pests of stored agricultural products and can also be found in high-organic soils.

Crops and damaged objects: This mite primarily affects stored grain, cereals, oilseeds, and processed products like flour and animal feed. It is also known to infest bulbs, tubers, and rhizomes in storage, causing severe tissue degradation and inviting secondary decay organisms.

Biology and lifecycle: The lifecycle encompasses stages including eggs, larvae, protonymphs, deutonymphs (hypopus stage), and adults. The hypopus stage is highly resistant to environmental stress and serves as a dispersal mechanism. Under optimal conditions of high humidity and moderate heat, the population can grow exponentially within a few weeks.

Damage and economic impact: The mites feed specifically on the grain germ, leading to a total loss of germination potential. Infestations lead to localized heating of the grain mass, high moisture accumulation, and the growth of harmful molds, which can render the entire batch unfit for consumption or trade.

Protection measures: Integrated pest management (IPM) for this mite involves maintaining strict environmental controls in storage facilities. Key practices include:

• Drying grain to below 14% moisture content
• Keeping storage temperatures below 10°C
• Regular cleaning and sanitization of grain bins
• Fumigation with approved acaricides when necessary