Meristacraceae

Meristacraceae are a family of fungi belonging to the order Entomophthorales. In the field of agronomy, they are primarily recognized as highly specialized entomopathogenic fungi that naturally regulate insect populations, effectively serving as a biological component of crop health maintenance.

The disease mechanism involves the infection of arthropod hosts, where the fungus penetrates the cuticle and colonizes the body. This type of mycosis is a critical factor in natural pest suppression, as it prevents the proliferation of harmful insects that feed on valuable agricultural products.

Crops affected by the activities of insects susceptible to Meristacraceae include various vegetable, field, and orchard crops. By targeting pests such as aphids, mites, and scale insects, these fungi provide a natural deterrent against the heavy infestation of plants, thereby reducing the need for chemical intervention.

Symptoms of the infection in insects include lethargy, sudden changes in exoskeleton color, and death, accompanied by the emergence of fungal structures. On the surface of infected insects, a visible layer of conidiophores or spores can often be observed, indicating the peak of the infection cycle.

Developmental conditions are heavily reliant on high humidity and specific temperature ranges. These environmental factors facilitate the discharge and germination of spores, enabling the fungus to spread rapidly within a dense population of pests during particularly humid periods, such as after rainfall or heavy dew.

• Regular inspection of field pest populations.
• Preservation of beneficial natural biocontrol agents.
• Strategic selection of pesticides to protect natural fungal reservoirs.
• Management of plant density to balance local humidity levels.