Mite Laelaps algericus

The mite Laelaps algericus belongs to the order Mesostigmata, family Laelapidae. These are members of the gamasid mite group, which are typically associated with parasitizing small mammals in natural environments; however, their presence in soil layers and plant substrates necessitates attention from agronomists and crop protection specialists.

This species is characterized by high ecological plasticity. In agroecosystems, these mites can be found in the root zone of various vegetable and ornamental crops, especially when organic substrates are used or in greenhouse environments where the microclimate promotes active reproduction.

The life cycle includes the stages of egg, larva, protonymph, deutonymph, and adult. Unlike highly specialized phytophages, Laelaps algericus possesses a mixed feeding strategy. When their primary food source is scarce, they are capable of feeding on organic debris, soil microorganisms, or even damaging delicate plant root hairs.

The damage caused is often indirect. Direct impact on cultivated plants manifests as suppression of the root system, leading to stunted growth, leaf chlorosis, and a decrease in the plant's overall immune system. The damage may be exacerbated by the fact that these mites act as vectors or reservoirs for various pathogenic microorganisms within the soil.

Protection measures involve a comprehensive approach based on the phytosanitary control of substrates. It is recommended to:

• Perform thermal or chemical sterilization of soil mixtures before planting.
• Maintain an optimal water regime to prevent excessive mite accumulation in the rhizosphere.
• Apply biological products based on entomopathogenic fungi.
• Use acaricides during mass outbreaks of the pest in greenhouses.